Abstract

An optical waveguide device in which an optical loss is reduced by removing an air bubble inside an adhesive layer for joining a reinforcing member from near an optical waveguide or the like even in a case where a protruding part such as a rib type optical waveguide or a spot size converter is formed on an optical waveguide substrate is provided. An optical waveguide device includes an optical waveguide substrate (1, 2) provided with an optical waveguide (10, 12), and a reinforcing member (3) disposed on an upper side of the optical waveguide (10, 12) near an end portion of the optical waveguide (10, 12), the optical waveguide substrate (1, 2) and the reinforcing member (3) being joined through an adhesive layer (4), in which a protective layer (13) that covers the optical waveguide (10, 12) is provided on the optical waveguide (10, 12) positioned on a lower side of the reinforcing member (3), and the adhesive layer (4) is disposed outside the protective layer (13).

IPC Classes  ?

• G02B 6/122 - Basic optical elements, e.g. light-guiding paths

Abstract

The present invention addresses the problem of providing dimethylpolysiloxane-coated metal oxide particles having excellent hydrophobicity. The present invention also addresses the problem of providing a dispersion liquid, a composition and a cosmetic each containing the dimethylpolysiloxane-coated metal oxide particles. The present invention also addresses the problem of providing a method for producing the dimethylpolysiloxane-coated metal oxide particles.　The present invention relates to: polysiloxane-coated metal oxide particles, in which the surfaces of metal oxide particles are coated with dimethylpolysiloxane, and which have a hydroxyl group detection ratio of 10% or less; and a method for producing polysiloxane-coated metal oxide particles, the method comprising a surface treatment step for mixing metal oxide particles with dimethylpolysiloxane having a kinematic viscosity of 500 mm2/s to 4000 mm2/s inclusive at 25°C, without using a solvent, to coat the surfaces of the metal oxide particles with the dimethylpolysiloxane and a step for subjecting the dimethylpolysiloxane-coated metal oxide particles to a heat treatment at 250°C to 380°C inclusive.

IPC Classes  ?

• C01G 9/02 - Oxides; Hydroxides
• C09D 17/00 - Pigment pastes, e.g. for mixing in paints
• A61Q 1/00 - Make-up preparations; Body powders; Preparations for removing make-up
• A61K 8/27 - Zinc; Compounds thereof
• C09C 3/10 - Treatment with macromolecular organic compounds

Abstract

The objective of the present invention is to provide an optical waveguide element in which the absorption of light waves propagating in the optical waveguide by electrodes is suppressed while preventing a decrease in the efficiency of the electric field applied to the optical waveguide by the electrodes.　An optical waveguide element according to the present invention comprises a substrate 1 in which an optical waveguide 10 is formed and an electrode 2 placed on the substrate in close proximity to the optical waveguide, and is characterized such that in an optical waveguide element in which the electrode comprises an electrode layer M1 and a foundation layer m1 disposed between the electrode layer and the substrate, the electrode layer is disposed between the optical waveguide and the foundation layer and protruding from the foundation layer, and the electrode layer is in direct contact with the top of the substrate.

IPC Classes  ?

• G02F 1/035 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect in an optical waveguide structure

Abstract

This optical waveguide device, which comprises lenses that couple an optical waveguide provided to an optical waveguide substrate and optical fibers, suppresses an increase in optical coupling loss between the optical waveguide and the optical fibers caused by the fixing structure for the optical waveguide substrate and the lenses.　An optical waveguide device (3) comprises an optical waveguide substrate (20) on which an optical waveguide (30) is provided, and a plurality of lenses (42, 44, 52) optically coupling the optical waveguide (30) and optical fibers (10, 11), wherein: the optical waveguide (30) includes at least one input waveguide (36) on which input light is incident, and at least two output waveguides (38) that emit emission light which forms output light; an end (32) of the input waveguide (36) and ends (34, 35) of the output waveguides (38) are formed on one same end face (22) of the optical waveguide substrate (20); at least three lenses (42, 44, 52) are disposed on the end face (22) so as to respectively correspond to the at least one input waveguide (36) and the at least two output waveguides (38); and the at least three lenses (42, 44, 52) are constituted by a lens array (40) in which at least two lenses (42, 44) are integrally formed, and a single lens (50).

IPC Classes  ?

• G02B 6/32 - Optical coupling means having lens focusing means

Abstract

The purpose of the present invention is to provide an optical waveguide element in which light absorption is suppressed even when an electrode interval is narrowed.　This optical waveguide element has a substrate (1) in which an optical waveguide (10) is formed, and a control electrode (3) that is arranged close to the optical waveguide on the substrate, wherein the optical waveguide element is characterized in that the optical waveguide (10) is a convex optical waveguide, and the shape of a side surface of the control electrode (3) that faces the optical waveguide is constituted from an inclined surface (32) having a prescribed angle from the substrate, and a curved surface (33) that connects to the inclined surface and forms a curved recess.

IPC Classes  ?

• G02F 1/03 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect

Abstract

The purpose of the present invention is to provide an optical modulator that suppresses the progression of over-etching and prevents electrode peeling and increases in drive voltage.　This optical modulator comprises: a substrate 1 having an optical waveguide 10 formed thereon; and an electrode 2 arranged near the optical waveguide on the substrate. The optical modulator has an electrode underlayer 3 between the substrate 1 and the electrode 2 and is characterized in that uneven sections 5 are formed on the surface side of the substrate 1 in a predetermined range S2 extending from an end section of the electrode 2 near the optical waveguide to the inside of the electrode when the substrate is viewed in a planar view.

IPC Classes  ?

• G02F 1/035 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect in an optical waveguide structure

Abstract

The purpose of the present invention is to provide an optical waveguide element that suppresses absorption of light propagating through an optical waveguide by a control electrode, and prevents peeling of a dielectric layer covering the optical waveguide.　An optical waveguide element according to the present invention comprises a substrate 1 on which an optical waveguide is formed, and a control electrode 2 disposed close to the optical waveguide on the substrate, and is characterized in that the optical waveguide is a rib-type optical waveguide 10, an end of the control electrode 2, which is close to the rib-type optical waveguide 10, is located on a first recessed portion C1 of the substrate forming the rib-type optical waveguide 10, the optical waveguide element has a dielectric layer 3 covering the rib-type optical waveguide 10, and is provided with a second recessed portion C2 that is part of the first recessed portion C1 and is further recessed from the shallowest position of the first recessed portion C1 in the vicinity of a bottom portion of the rib-type optical waveguide 10, and the dielectric layer 3 is disposed on at least part of the second recessed portion C1.

IPC Classes  ?

• G02F 1/035 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect in an optical waveguide structure

Abstract

Provided are: a bipolar membrane electrodialyzer which has a high electric-current efficiency and in which the cation-exchange membrane is inhibited from suffering scale deposition therein due to divalent cations; and a method for operating the bipolar membrane electrodialyzer.　The method is for operating a bipolar membrane electrodialyzer configured of a bipolar membrane, a cation-exchange membrane, and an anion-exchange membrane, the method comprising using the bipolar membrane electrodialyzer to yield an acid and an alkali from brine and being characterized by conducting electrodialysis while regulating the acid solution and/or the alkali solution so as to contain a salt to be decomposed.

IPC Classes  ?

• C02F 1/469 - Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
• B01D 61/44 - Ion-selective electrodialysis
• B01D 61/46 - Apparatus therefor

Abstract

Provided are a production method and a production system of calcium carbonate that utilize a calcium-containing waste and can control the alkali content in the obtained calcium carbonate.　The calcium carbonate production method for producing calcium carbonate from a calcium-containing waste includes: a calcium dissolution step for adding an aqueous hydrochloric acid solution to the calcium-containing waste and dissolving calcium to prepare an aqueous solution containing calcium ions; a separation step for adjusting the hydrogen ion concentration index of the aqueous solution containing calcium ions to separate Mg, etc. from the aqueous solution; and a calcium carbonate preparation step for adding an aqueous solution containing potassium carbonate and/or sodium carbonate to the aqueous solution containing calcium ions obtained in the separation step and reacting to prepare calcium carbonate. In this calcium carbonate production method (system), in the calcium carbonate preparation step, the rate of the addition of the aqueous solution containing potassium carbonate and/or sodium carbonate is controlled so as to adjust κ, which is represented by a specific formula, to 3000 or less.

IPC Classes  ?

• C01F 11/18 - Carbonates
• B09B 3/70 - Chemical treatment, e.g. pH adjustment or oxidation

Abstract

This carbon dioxide utilizing system utilizes carbon dioxide in exhaust gas, reduces the amount of fresh concrete sludge that is generally discarded as waste and allows efficient recycling of calcium carbonate. The carbon dioxide utilizing system comprises an flue through which exhaust gas containing carbon dioxide passes, a spray nozzle that supplies fresh concrete sludge water to the flue, and a dust collector that recovers a reactant containing calcium carbonate generated by a reaction between the carbon dioxide in the exhaust gas and the fresh concrete sludge water.

IPC Classes  ?

• C01F 11/18 - Carbonates
• B01D 46/02 - Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
• B01D 53/14 - Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by absorption
• B01D 53/18 - Absorbing units; Liquid distributors therefor
• B01D 53/62 - Carbon oxides
• B01D 53/78 - Liquid phase processes with gas-liquid contact
• C02F 11/00 - Treatment of sludge; Devices therefor

Abstract

An electrostatic chuck device comprising: a plate-shaped electrostatic chuck part which has an electrostatic adsorption electrode provided therein and has a mounting surface on which a plate-shaped sample is mounted; and a base part which supports the electrostatic chuck part on a support surface thereof from an opposite side of the mounting surface, wherein the base part has a disk shape which has a central axis at a center thereof, and a coolant channel extending along the support surface is provided inside the base part, wherein the coolant channel includes an outer peripheral channel which overlaps an outer edge of the plate-shaped sample when viewed from an axial direction of the central axis, and an inner peripheral channel which is disposed on an inner side in a radical direction than the outer peripheral channel, wherein at least a portion of the inner peripheral channel extends spirally around the central axis, and a channel cross-sectional area of the inner peripheral channel decreases as a distance from the central axis increases.

IPC Classes  ?

• B23Q 11/12 - Arrangements for cooling or lubricating parts of the machine
• B23Q 3/154 - Stationary devices
• H02N 13/00 - Clutches or holding devices using electrostatic attraction, e.g. using Johnson-Rahbek effect

Abstract

Provided is an optical waveguide element including spot size conversion means with suppressed optical insertion loss without complicating a manufacturing process. An optical waveguide element includes an optical waveguide substrate (4) having a rib-type optical waveguide (10) formed of a material having an electro-optic effect, and spot size conversion means for changing a mode field diameter of a light wave propagating through the optical waveguide at a position where an input end or an output end of the rib-type optical waveguide (10) is formed, in which the spot size conversion means includes a first configuration layer (1) that is connected to the rib-type optical waveguide (10) and includes a tapered portion (11) in which a width of the optical waveguide expands, a second configuration layer (2) that is laminated on the first configuration layer (1) and has a width narrower than a width of the first configuration layer (1), and a third configuration layer (3) that is disposed to cover the second configuration layer (2) excluding a part of the second configuration layer (2) close to the rib-type optical waveguide and has a width wider than the width of the second configuration layer (2).

IPC Classes  ?

• G02B 6/122 - Basic optical elements, e.g. light-guiding paths

Abstract

An optical modulator that can suppress crosstalk of a modulation signal even in a case where a wiring substrate is disposed to overlap with a modulation substrate is provided. An optical modulator includes a modulation substrate 1 that includes an optical waveguide and a modulation electrode 10 for modulating a light wave which propagates through the optical waveguide, and a wiring substrate 2 provided with wiring 22 for relaying a modulation signal to be applied to the modulation electrode 10, in which the wiring substrate is disposed to overlap with the modulation substrate to cover an action portion on which modulation is performed by the modulation electrode, and an electromagnetic wave absorption member SH is disposed at at least a part of a position facing the action portion in the wiring substrate.

IPC Classes  ?

• G02F 1/225 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour by interference in an optical waveguide structure
• G02F 1/21 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour by interference

Abstract

A dispersion liquid according to the present invention contains metal oxide particles which have been surface-modified by at least one kind of silane compound and a solvent, the silane compound contains a methyl group or a methyl group and a hydrocarbon group having 2 or more carbon atoms, in a case where a transmission spectrum of the metal oxide particles that are obtained by drying the dispersion liquid by vacuum drying is measured within a wavenumber range of 800 cm−1 to 3,800 cm−1 with a Fourier transform infrared spectrophotometer, and values of the transmission spectrum are standardized such that a maximum value of the transmission spectrum in the range is 100 and a minimum value is 0, the following expression (1) is satisfied. A dispersion liquid according to the present invention contains metal oxide particles which have been surface-modified by at least one kind of silane compound and a solvent, the silane compound contains a methyl group or a methyl group and a hydrocarbon group having 2 or more carbon atoms, in a case where a transmission spectrum of the metal oxide particles that are obtained by drying the dispersion liquid by vacuum drying is measured within a wavenumber range of 800 cm−1 to 3,800 cm−1 with a Fourier transform infrared spectrophotometer, and values of the transmission spectrum are standardized such that a maximum value of the transmission spectrum in the range is 100 and a minimum value is 0, the following expression (1) is satisfied. IA/IB≤3.5   (1)

IPC Classes  ?

• C08K 9/08 - Ingredients agglomerated by treatment with a binding agent
• H01L 33/56 - Materials, e.g. epoxy or silicone resin
• C08J 3/07 - Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media from polymer solutions

Abstract

This semiconductor manufacturing device member includes a pair of ceramic plates and an internal electrode which is sandwiched by the pair of ceramic plates. A metal plate is a material for the internal electrode. A diffusion layer is formed at a section of the ceramic plates which contacts the internal electrode, and metal atoms contained in the metal plate material are diffused in the diffusion layer.

IPC Classes  ?

• H01L 21/683 - Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components for supporting or gripping
• C23C 16/458 - Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition (CVD) processes characterised by the method of coating characterised by the method used for supporting substrates in the reaction chamber
• H01L 21/205 - Deposition of semiconductor materials on a substrate, e.g. epitaxial growth using reduction or decomposition of a gaseous compound yielding a solid condensate, i.e. chemical deposition
• H01L 21/3065 - Plasma etching; Reactive-ion etching

Abstract

In a dispersion liquid according to the present invention, regarding metal oxide particles that are obtained by vacuum-drying a dispersion liquid containing metal oxide particles which have been surface-modified by a methyl group and a phenyl group in a predetermined ratio, in a case where a transmission spectrum in a wavenumber range of 800 cm−1 or higher and 3,800 cm−1 or lower is measured by FT-IR, and values of the transmission spectrum are standardized, IA/IB≤3.5 is satisfied (IA represents a spectrum value standardized at 3,500 cm−1, and IB represents a spectrum value standardized at 1,100 cm−1).

IPC Classes  ?

• C08K 9/06 - Ingredients treated with organic substances with silicon-containing compounds
• C08K 3/22 - Oxides; Hydroxides of metals
• C09C 3/08 - Treatment with low-molecular-weight organic compounds
• C08L 83/04 - Polysiloxanes
• H01L 33/56 - Materials, e.g. epoxy or silicone resin

Abstract

An optical waveguide element includes a substrate, an optical waveguide disposed inside the substrate or on the substrate, and an electrode provided along the optical waveguide, working on the optical waveguide to generate a phase change in a light wave propagating through the optical waveguide. The electrode is a traveling-wave electrode. In a modulation section where the light wave is controlled by the electrode, the electrode and the optical waveguide are configured so that the phase change generated in a first modulation section located within a predetermined distance range from a downstream side end portion along a propagation direction of a traveling wave of an electrical signal propagating through the electrode has a sign opposite to a sign of the phase change generated in a second modulation section located within a predetermined distance range from an input end of the electrical signal on an upstream side along the propagation direction.

IPC Classes  ?

• G02F 1/035 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect in an optical waveguide structure
• G02F 1/01 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour

Abstract

A ceramic joined body includes: a pair of ceramic plates; and an electrode layer that is interposed between the pair of ceramic plates, in which the electrode layer is embedded in at least one of the pair of ceramic plates, and in an outer edge of the electrode layer, a joint surface between the at least one of the pair of ceramic plates and the electrode layer has an inclination with respect to a thickness direction of the pair of ceramic plates and the electrode layer.

IPC Classes  ?

• H01L 21/683 - Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components for supporting or gripping
• H01J 37/32 - Gas-filled discharge tubes
• C04B 37/00 - Joining burned ceramic articles with other burned ceramic articles or other articles by heating

Abstract

An optical modulator that suppresses poor welding between a case main body and a lid portion is provided. There is provided an optical modulator including: a case that is a rectangular parallelepiped and accommodates at least an optical waveguide element, in which the case includes a case main body 1 in which one surface of the rectangular parallelepiped forms an opening portion, and a lid portion 2 that has a rectangular shape and that closes the opening portion, the lid portion includes a peripheral part that has a thin thickness, and a protruding part 20 that is formed on the lid portion excluding the peripheral part and that protrudes toward an inside of the case, and when the lid portion is fitted into the case main body, a distance between an inner peripheral side of an end surface forming the opening portion of the case main body and an outer edge of the protruding part is set such that a distance d1 formed on a short-side side of the lid portion is larger than a distance d2 formed on a long-side side of the lid portion.

IPC Classes  ?

• G02F 1/01 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour

Abstract

The optical absorption loss of the optical waveguide and the signal propagation loss of the high-frequency signal electrode are both reduced at a plurality of intersections between the convex optical waveguide and the high-frequency signal electrode, thereby achieving good operating characteristics. An optical waveguide device includes a substrate on which optical waveguides are formed, and an electrode that is formed on the substrate and has intersections crossing over the optical waveguides, in which the optical waveguides are configured by protruding portions extending on the substrate, and an intermediate layer made of a resin is provided at the adjacent intersections along the electrode to fill spaces between the protruding portions along the electrode and covers top of the protruding portions.

IPC Classes  ?

• G02F 1/035 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect in an optical waveguide structure

Abstract

In a dispersion liquid according to the present invention, regarding metal oxide particles that are obtained by vacuum-drying a dispersion liquid containing the metal oxide particles which have been surface-modified by at least one kind of a silane compound containing a methyl group and a hydrocarbon group having 2 or more carbon atoms and at least one kind of silicone compound, in a case where a transmission spectrum in a wavenumber range of 800 cm-1 or higher and 3,800 cm-1 or lower is measured by FT-IR, and values of the transmission spectrum are standardized, the following expression (1) is satisfied. In a dispersion liquid according to the present invention, regarding metal oxide particles that are obtained by vacuum-drying a dispersion liquid containing the metal oxide particles which have been surface-modified by at least one kind of a silane compound containing a methyl group and a hydrocarbon group having 2 or more carbon atoms and at least one kind of silicone compound, in a case where a transmission spectrum in a wavenumber range of 800 cm-1 or higher and 3,800 cm-1 or lower is measured by FT-IR, and values of the transmission spectrum are standardized, the following expression (1) is satisfied. IA/IB ≤ 3.5 (1) In a dispersion liquid according to the present invention, regarding metal oxide particles that are obtained by vacuum-drying a dispersion liquid containing the metal oxide particles which have been surface-modified by at least one kind of a silane compound containing a methyl group and a hydrocarbon group having 2 or more carbon atoms and at least one kind of silicone compound, in a case where a transmission spectrum in a wavenumber range of 800 cm-1 or higher and 3,800 cm-1 or lower is measured by FT-IR, and values of the transmission spectrum are standardized, the following expression (1) is satisfied. IA/IB ≤ 3.5 (1) (“IA” represents a spectrum value standardized at 3,500 cm-1, and “IB” represents a spectrum value standardized at 1,100 cm-1).

IPC Classes  ?

• C08K 9/08 - Ingredients agglomerated by treatment with a binding agent
• C08J 3/07 - Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media from polymer solutions
• C09J 11/04 - Non-macromolecular additives inorganic
• C09J 183/04 - Polysiloxanes

Abstract

An optical waveguide element includes: a substrate on which an optical waveguide is formed; and an electrode that is formed on the substrate and controls a light wave propagating through the optical waveguide. The optical waveguide includes a protruding portion extending on the substrate, and the electrode includes a base layer made of Nb, and an upper layer formed on the base layer, the base layer being formed between the substrate and the upper layer. The occurrence of loss in propagating light is effectively suppressed due to the existence of the electrode that controls the propagating light in the optical waveguide element using the protruding optical waveguide

IPC Classes  ?

• G02F 1/225 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour by interference in an optical waveguide structure
• G02F 1/21 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour by interference

Abstract

An optical waveguide device that can prevent fluctuations in electrical characteristics due to adhesion of foreign matter to electrodes without adversely affecting the degree of freedom in electrode design. The optical waveguide device includes a substrate, an optical waveguide formed on the substrate, an electrode for controlling a light wave propagating through the optical waveguide, and a first insulating layer disposed between two adjacent electrodes among the electrodes, in which the first insulating layer has a height from a surface of the substrate that is higher than heights of the two electrodes.

IPC Classes  ?

• G02F 1/225 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour by interference in an optical waveguide structure
• G02F 1/21 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour by interference

Abstract

This geopolymer composition contains: an active filler containing at least a blast-furnace slag fine powder; and sodium silicate as an activator. The sodium silicate is sodium orthosilicate or anhydrous sodium metasilicate. When the sodium silicate is sodium orthosilicate, the content of the sodium orthosilicate is 2-50 parts by weight with respect to 100 parts by weight of the active filler. When the sodium silicate is anhydrous sodium metasilicate, the content of the anhydrous sodium metasilicate is 10-30 parts by weight with respect to 100 parts by weight of the active filler.

IPC Classes  ?

• C04B 28/26 - Silicates of the alkali metals
• C04B 18/08 - Flue dust
• C04B 18/14 - Waste materials; Refuse from metallurgical processes
• C04B 22/08 - Acids or salts thereof

Abstract

An optical modulator with which electrical connection between a signal electrode and signal wiring of a wiring substrate can be reliably made even in a case where a width of the signal electrode in an action portion of an optical control substrate is narrow is provided. An optical modulator includes an optical control substrate (1) that includes an optical waveguide (OW) including at least a branched waveguide which branches one light wave into two light waves, and that includes a control electrode for applying an electrical field to the branched waveguide, and a wiring substrate provided with a wiring which relays an electrical signal to be applied to the control electrode or with a wiring which terminates the electrical signal, in which the control electrode is provided with a signal electrode (S), the wiring is provided with signal wiring, and in a part (Sc) in which electrical connection is made between the signal electrode (S) and the signal wiring, a clearance (W1) in which the branched waveguide (OW) sandwiches the signal electrode is wider than a clearance (W2) in which the branched waveguide sandwiches the signal electrode in an action portion in which the control electrode applies the electrical field to the branched waveguide.

IPC Classes  ?

• G02F 1/01 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour

Abstract

The present invention pertains to zinc oxide particles that are surface-treated by using a surface treatment agent. The BET specific surface area of the zinc oxide particles is 1.5-8 m2/g. The surface treatment agent is an alkyl alkoxysilane having an alkyl group having 6-10 carbon atoms. The contained amount of the surface treatment agent is 0.70-0.92 mass%. The particle diameter D98, which is determined at a cumulative volume percentage of 98% in a dry particle size distribution, is 40 μm or less.

IPC Classes  ?

• C01G 9/02 - Oxides; Hydroxides
• A61Q 17/04 - Topical preparations for affording protection against sunlight or other radiation; Topical sun tanning preparations
• A61K 8/04 - Dispersions; Emulsions
• A61K 8/27 - Zinc; Compounds thereof
• C09K 23/54 - Silicon compounds

Abstract

A method for repairing an electrostatic chuck device that is formed by bonding an electrostatic chuck member made of ceramics and a temperature-controlling base member made of metal with a first adhesive layer sandwiched therebetween is provided. The method includes a step of repairing the first adhesive layer that has been eroded by using a cold-curing adhesive.

IPC Classes  ?

• B32B 37/12 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
• B32B 7/12 - Interconnection of layers using interposed adhesives or interposed materials with bonding properties
• B32B 9/04 - Layered products essentially comprising a particular substance not covered by groups comprising such substance as the main or only constituent of a layer, next to another layer of a specific substance
• H01L 21/683 - Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components for supporting or gripping

Abstract

It is possible to provide an optical modulator in which a transmission loss from a driver circuit element to a modulation substrate is reduced. An optical modulator includes a modulation substrate (1) that includes an optical waveguide (200) and a modulation electrode (10) for modulating a light wave propagating through the optical waveguide, a driver circuit element (2) that generates a modulation signal to be applied to the modulation electrode (10), and a case (3) that accommodates the modulation substrate (1) and the driver circuit element (2), in which an output terminal (20′) that outputs the modulation signal is provided on an upper surface side of the driver circuit element (2), and a wiring substrate (4) including a wiring that electrically connects the output terminal (20′) and the modulation electrode (10) is disposed above the driver circuit element (2) and the modulation substrate (1) to straddle both the driver circuit element (2) and the modulation substrate (1).

IPC Classes  ?

• G02F 1/035 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect in an optical waveguide structure
• G02F 1/21 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour by interference
• G02F 1/225 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour by interference in an optical waveguide structure

Abstract

An optical waveguide element that suppresses insertion loss related to coupling to an optical fiber or the like while miniaturizing the optical waveguide element is provided. There is provided an optical waveguide element including: a rib optical waveguide (10) that is made of a material (1) having an electro-optic effect; and the reinforcing substrate (2) that supports the optical waveguide, in which one end of the optical waveguide forms a tapered portion (11) of which a width narrows toward an end surface of the reinforcing substrate, a structure (3) made of a material having a higher refractive index than a material constituting the reinforcing substrate is provided so as to cover the tapered portion, and a coating layer (4) made of a material having a lower refractive index than the material constituting the structure is disposed so as to cover the structure.

IPC Classes  ?

• G02B 6/42 - Coupling light guides with opto-electronic elements
• G02F 1/01 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour

Abstract

The purpose of the present invention is to provide an optical waveguide element that reduces internal stress occurring at a joining portion between a substrate or a reinforcing block and an optical component and that suppresses air bubbles from remaining in an adhesive.　This optical waveguide element comprises a substrate 1 forming an optical waveguide 10, and a reinforcing block 3 that is disposed on the substrate 1 along an end face of the substrate 1 on which an input unit or an output unit of the optical waveguide 10 is disposed, the optical waveguide element being characterized in that: an optical component 4 joined to the end faces of the substrate 1 and the reinforcing block 3 is provided; a groove (CH1 (IN), etc.) is provided which is disposed on a joining surface of the optical component 4 in the vicinity of a portion corresponding to the input unit or the output unit; and a portion (CH1 (OUT), etc.) of the groove reaches a side surface adjacent to the joining surface.

IPC Classes  ?

• G02B 6/26 - Optical coupling means
• G02B 6/122 - Basic optical elements, e.g. light-guiding paths
• G02F 1/03 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect
• G02F 1/035 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect in an optical waveguide structure

Abstract

The purpose of the present invention is to provide an optical waveguide element that prevents the detachment of an optical waveguide substrate and inhibits optical wave propagation loss in an optical waveguide.　This optical waveguide element has an optical waveguide substrate 1 on which an optical waveguide 10 is formed, and a reinforcing substrate 11 disposed below the optical waveguide substrate, the optical waveguide element being characterized by including a lower buffer layer B1 that is disposed between the optical waveguide substrate and the reinforcing substrate and joins both, and an upper buffer layer B2 that is disposed above the optical waveguide substrate and is disposed in contact with the optical waveguide substrate, and by the thickness d2 of the upper buffer layer being formed thinner than the thickness d1 of the lower buffer layer (d2

IPC Classes  ?

• G02B 6/12 - Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
• G02F 1/01 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour

Abstract

The purpose of the present invention is to provide an optical waveguide element in which electrode wiring can be simplified and maintained at a length longer than that of working electrode parts.　The optical waveguide element according to the present invention includes a substrate (1) on which an optical waveguide (10) is formed and an electrode which is disposed on the substrate and applies an electric field to the optical waveguide, said optical waveguide element being characterized in that: the electrode comprises working electrode parts (BE1, BE10, etc.) that are disposed in the vicinity of the optical waveguide, power feeding parts (BT1, BT10, etc.) that feed power to the electrode, and wiring parts (BW1, BW10, etc.) that link the working electrode parts and the power feeding parts; the electrode includes a plurality of the working electrode parts that are disposed at different positions on the substrate; and at least some of the wiring parts are disposed between at least some among the working electrode parts or the other wiring parts so as to overlap with an insulation layer (IN) therebetween.

IPC Classes  ?

• G02F 1/035 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect in an optical waveguide structure

Abstract

The purpose of the present invention is to provide an optical waveguide element where a joining relationship between an optical waveguide substrate and a reinforcing member can be set appropriately.　The present invention is an optical waveguide element provided with an optical waveguide substrate 1 (11) which is provided with an optical waveguide 10, and a reinforcing member 2 which is disposed above the optical waveguide near an end section of the optical waveguide, the optical waveguide substrate and the reinforcing member being joined by an adhesive layer AD interposed therebetween, wherein: a plurality of structures are disposed between the optical waveguide substrate and the reinforcing member so as to sandwich the optical waveguide; a first structure ST1 is configured such that the adhesive layer is disposed between a top surface of the structure and the reinforcing member, and is set such that the area of the top surface is at least a prescribed percentage of the area of the bottom surface of the reinforcing member; and a second structure ST2 is configured such that the thickness of the adhesive layer disposed between the first structure and the reinforcing member is set to a prescribed range.

IPC Classes  ?

• G02B 6/122 - Basic optical elements, e.g. light-guiding paths
• G02B 6/30 - Optical coupling means for use between fibre and thin-film device
• G02F 1/01 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour

Abstract

In order to provide an optical waveguide element which, by using as a buffer layer a thin low-resistant layer having a low electrical resistance as compared with a substrate, minimizes DC drifting and separation of the low-resistant layer from the substrate, and exerts high electrical field efficiency, and an optical modulation device and an optical transmission apparatus which use the optical waveguide element, an optical waveguide element (1) comprises: a substrate (5) which has formed therein an optical waveguide (10) and exhibits an electro-optical effect; and a plurality of control electrodes (S, G) which are formed on the obverse surface side of the substrate (5) with the optical waveguide (10) therebetween and which are for applying an electrical field to the optical waveguide (10). A low-resistant layer (9) which has a low electrical resistance as compared with the substrate (5) is formed in at least a portion of the obverse surface of the substrate (5) between the control electrodes (S, G) and/or in at least a portion of the reverse surface of the substrate (5), and the thickness of the low-resistant layer (9) is 200 nm or less.

IPC Classes  ?

• G02F 1/035 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect in an optical waveguide structure

Abstract

The present invention provides: an optical device in which the cross-sectional area of a heat transfer passage from a heating element that serves as a heat source to a heat dissipation part can be made larger than a conventional configuration and in which heat dissipation from the heating element can be performed more efficiently; and an optical transmission apparatus using the same. The optical device 2 comprises a modulation element unit 10 which includes an optical modulation element 15, a heat generating element 20, a heat generating element seat 31 to which the heat generating element 20 is mounted, and a housing 40 which accommodates the heat generating element seat 31 in the interior thereof. The heat generating element seat 31 has a mounting surface to which the heat generating element 20 is mounted and a mounting surface which is mounted to the housing 40, and the area of the mounting surface to which the heat generating element 20 is mounted is less than the area of the mounting surface which is mounted to the housing 40.

IPC Classes  ?

• G02F 1/01 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour

Abstract

This electrostatic chuck member has: a substrate, one main surface of which is a placement surface on which a plate-like sample is placed; and an electrostatic adsorption electrode provided on the side opposite to the placement surface or inside the substrate. A side peripheral surface, of the substrate, continuous with the placement surface has at least a first curved surface which is a convex curved surface provided in the circumferential direction at a peripheral edge portion of the placement surface, and a second curved surface provided in the circumferential direction at a height position which differs from the first curved surface.

IPC Classes  ?

• H01L 21/683 - Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components for supporting or gripping
• H01L 21/205 - Deposition of semiconductor materials on a substrate, e.g. epitaxial growth using reduction or decomposition of a gaseous compound yielding a solid condensate, i.e. chemical deposition
• H01L 21/3065 - Plasma etching; Reactive-ion etching
• H02N 13/00 - Clutches or holding devices using electrostatic attraction, e.g. using Johnson-Rahbek effect

Abstract

A dispersion liquid comprising: metal oxide particles that are surface-modified by a surface modifying material; and a hydrophobic solvent, wherein the metal oxide particles have a refractive index of 2.01-2.50, the surface modifying material contains a silane compound and a silicone compound, the silane compound contains a methyl group-containing silane compound, and, when the dispersion liquid and a methyl phenyl silicone are mixed such that the ratio between the total mass of the metal oxide particles and the surface modifying material to the mass of the methyl phenyl silicone becomes 3:97 and a 1 mm-thick cured product is obtained therefrom, a value obtained by dividing the scattered amount at a wavelength of 450 nm of the cured product by the scattered amount at a wavelength of 600 nm of the cured product is 1.0 or more.

IPC Classes  ?

• C01B 33/18 - Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof
• C01G 25/02 - Oxides
• C08K 9/06 - Ingredients treated with organic substances with silicon-containing compounds
• C08L 101/00 - Compositions of unspecified macromolecular compounds
• C08K 3/22 - Oxides; Hydroxides of metals
• C09C 3/12 - Treatment with organosilicon compounds
• C09K 23/54 - Silicon compounds
• H01L 33/00 - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS - Details thereof
• H01L 33/56 - Materials, e.g. epoxy or silicone resin

Abstract

An optical device includes a housing that accommodates at least an optical waveguide element, a main body portion 1 of the housing having an opening portion OP on one surface and a lead pin PN1 fixed to a side surface adjacent to the one surface, and including a metal member 2 disposed to surround the opening portion OP and a lid member 11 that closes the opening portion OP and is joined to the metal member 2, in which end portions of the metal member 2 and the lid member 11 along the side surface of the main body portion 1 at which the lead pin PN1 is disposed are located on an inner side of the main body portion 1 than the side surface of the main body portion 1.

IPC Classes  ?

• G02B 6/42 - Coupling light guides with opto-electronic elements

Abstract

The present invention effectively attenuates unwanted light propagating in a substrate in an optical waveguide element, while suppressing the occurrence of substrate stress.　An optical waveguide element (100) includes: a substrate (102) made of an oxide; and an optical waveguide (104) formed on a main face of the substrate. The substrate has an oxygen-depleted layer (200) having less oxygen content than the other portions of the substrate. Of the region on the main face of the substrate, the oxygen-depleted layer is disposed in the region other than the waveguide path of light from a light input end (170) to a light output end (172) of the optical waveguide.

IPC Classes  ?

• G02F 1/035 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect in an optical waveguide structure

Abstract

The purpose of the present invention is to provide an optical waveguide element which is configured so that an adhesive does not flow in between electrodes or the like when a fixing member is bonded on a substrate, and in which propagation loss and the like in an optical waveguide are suppressed.　Provided is an optical waveguide element having a substrate (1) on which an optical waveguide is formed, electrodes (3S, 3G, 3B) formed on the substrate (1), and fixing members (4, 5) fixed on the substrate (1) via an adhesive (AD), wherein the optical waveguide element is characterized in that protruding structures (WL3-7) are arranged on the substrate (1), the structures (WL3-7) are arranged in succession so as to divide an upper surface of the substrate (1) into two regions, and a slit connecting the two regions is provided in the middle (between the WL3 and the WL4) of the structures (WL3-7) or between the structure (WL3) and an end part (E1) of the substrate (1).

IPC Classes  ?

• G02F 1/03 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect
• G02F 1/035 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect in an optical waveguide structure

Abstract

The purpose of the present invention is to provide an optical waveguide element that is excellent in high frequency characteristics, and is good in pattern formation of a resin layer covering an optical waveguide and bonding of a feeder line to an electrode.　The optical waveguide element according to the present invention has an optical waveguide (10) formed on a substrate (1), and a signal electrode (S) and a ground electrode (G) arranged on the substrate (1), and the optical waveguide element is characterized in that the signal electrode (S) and the ground electrode (G) are each formed from a plurality of stages of electrode layers (30, 31) excluding the underlying layer, and at least two electrode layers of the plurality of stages of electrode layers have different surface roughnesses.

IPC Classes  ?

• G02F 1/035 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect in an optical waveguide structure
• G02B 6/12 - Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind

Abstract

Surface-modified zinc oxide particles according to the present invention are obtained by treating the particle surfaces of zinc oxide particles with a hydrolyzable surface treatment agent; and the surface-modified zinc oxide particles have a color difference ∆E of 4.0 or less between before and after irradiation of simulated sunlight, while having a cyclopentasiloxane oil absorption of 20 mL/100 g or less.

IPC Classes  ?

• C01G 9/02 - Oxides; Hydroxides
• C09D 17/00 - Pigment pastes, e.g. for mixing in paints
• A61Q 17/04 - Topical preparations for affording protection against sunlight or other radiation; Topical sun tanning preparations
• A61K 8/27 - Zinc; Compounds thereof
• C09C 1/04 - Compounds of zinc
• C09C 3/08 - Treatment with low-molecular-weight organic compounds
• C09K 3/00 - Materials not provided for elsewhere

Abstract

This dispersion liquid comprises metal oxide particles surface-modified by a surface-modifying material, and a hydrophobic solvent, wherein: the metal oxide particles have a refraction index of 1.70 to 2.00; the surface-modifying material comprises a silane compound and a silicone compound; the silane compound comprises a methyl group-containing silane compound; when the dispersion liquid and a methyl phenyl silicone are mixed such that the ratio of the combined mass of the metal oxide particles and the surface-modifying material to the mass of the methyl phenyl silicone is 7:93 and this mixture is cured to form an article having a thickness of 1 mm, the portion of the 450 nm wavelength scattered by the cured material is 17% to 38%; and the value obtained by dividing the portion of 450 nm wavelength scattered by the cured material by the portion of 600 nm wavelength scattered by the cured material is 1.25 or more.

IPC Classes  ?

• C08L 101/00 - Compositions of unspecified macromolecular compounds
• C08K 3/22 - Oxides; Hydroxides of metals
• H01L 33/56 - Materials, e.g. epoxy or silicone resin

Abstract

To provide an optical waveguide device that is small, has low optical loss, and has long-term stability. Provided is an optical waveguide device in which an optical waveguide A (20) is formed on a first substrate (2), an end portion of the first substrate has an input portion that inputs a light wave into the optical waveguide A or an output portion that outputs a light wave from the optical waveguide A, an optical waveguide B (10) is formed on a second substrate (1), the second substrate has an optical modulation portion that modulates a light wave propagating through the optical waveguide B, and at least a part of the optical waveguide A (20) has a conversion portion (20) that converts an optical mode field diameter.

IPC Classes  ?

• G02F 1/035 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect in an optical waveguide structure

Abstract

Provided is an electrostatic chuck member provided with a placement surface on which a sample is mounted and a lower surface positioned at a side opposite the placement surface, the electrostatic chuck member comprising: a first plate body, a second plate body, and a third plate body stacked in order in the thickness direction and joined to each other; a first electrode layer positioned between the first plate body and the second plate body; a power-feeding unit joining layer positioned between the second plate body and the third plate body; a columnar first power-feeding unit embedded in the second plate body; and a columnar second power-feeding unit embedded in the third plate body. The first power-feeding unit connects the first electrode layer and the power-feeding unit joining layer, the second power-feeding unit extends from the power-feeding unit joining layer to the lower surface side, and the first electrode layer and the second power-feeding unit are electrically connected through the first power-feeding unit and the power-feeding unit joining layer.

IPC Classes  ?

• H01L 21/683 - Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components for supporting or gripping
• H02N 13/00 - Clutches or holding devices using electrostatic attraction, e.g. using Johnson-Rahbek effect

Abstract

This electrostatic chuck member comprises: a plate-shaped substrate that has a placement surface on which a sample is mounted and a lower surface positioned on the reverse side from the placement surface, and that is provided with an electrode layer that is positioned between the placement surface and the lower surface and extends along the placement surface, and a columnar power supply unit that extends from the electrode layer to the lower surface side; and a terminal member that is connected to an end surface of the power supply unit. The outer diameter of the power supply unit is 2 mm or greater. The power supply unit and the terminal member are connected by brazing at a brazed section, and the brazed section is positioned further to the lower surface side than the halfway position between the lower surface of the substrate and the electrode layer.

IPC Classes  ?

• H01L 21/683 - Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components for supporting or gripping
• C04B 37/02 - Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles
• H02N 13/00 - Clutches or holding devices using electrostatic attraction, e.g. using Johnson-Rahbek effect

Abstract

Provided is an electrostatic chuck device including: an electrostatic chuck plate which has a dielectric substrate having a placement surface on which a wafer is placed and electrodes positioned in the dielectric substrate; a focus ring which is installed on an outer peripheral portion of the electrostatic chuck plate and surrounding the placement surface; and a power connection portion which connects the electrode and a power supply. The electrostatic chuck plate has a first electrode positioned in a region overlapping the placement surface in plan view and a second electrode positioned in a region overlapping the focus ring in plan view. The power connection portion includes a power wire electrically connecting the first electrode and the second electrode via a current regulator.

IPC Classes  ?

• H01J 37/32 - Gas-filled discharge tubes

Abstract

The purpose of the present invention is to provide an optical waveguide element whereby a positional relationship between an optical waveguide substrate and a reinforcing member can be precisely set.　Provided is an optical waveguide element comprising an optical waveguide substrate 11 provided with an optical waveguide 10, and a reinforcing member 2 disposed on an upper side of the optical waveguide in the vicinity of an end part of the optical waveguide, the optical waveguide substrate and the reinforcing member being joined via an adhesive layer 3, wherein the optical waveguide element is characterized in that spacers (SP1, SP2) are arranged between the optical waveguide substrate and the reinforcing member so as to sandwich the optical waveguide.

IPC Classes  ?

• G02F 1/035 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect in an optical waveguide structure

Abstract

A dye according to the present invention is a compound represented by general formula (1) or general formula (2). (In the formula, M represents Sn or Ge, X represents C or N, R1 represents an alkyl group or a phenyl group, Y1 and Y2 each represent hydrogen, a halogen group, a methyl group, an alkoxy group, a phenyl group, a diphenylamide group, a thiophenyl group, or a phenylethynyl group, and Z represents a single bond or is represented by formula (3). R2 represents an alkyl group or a phenyl group.)

IPC Classes  ?

• C09B 45/22 - Monoazo compounds containing other metals
• C09B 45/34 - Preparation from o-monohydroxy azo compounds having in the o1-position an atom or functional group other than hydroxy, alkoxy, carboxyl, amino, or keto groups

Abstract

Surface-modified zinc oxide particles having a silane coupling agent having an alkoxy group on surfaces thereof, in which the surface-modified zinc oxide particles have 5.0 × 10-2 g2/s or more and 1.0 × 102 g2/s or less of a penetration rate coefficient A of cyclopentasiloxane with respect to the surface-modified zinc oxide particles, which is indicated by A in the following formula (1). W2 = A·t (1) (in the formula, W is a penetration weight (unit: g), and t is a time (unit: s).)

IPC Classes  ?

• A61K 8/02 - Cosmetics or similar toiletry preparations characterised by special physical form
• A61Q 17/04 - Topical preparations for affording protection against sunlight or other radiation; Topical sun tanning preparations

Abstract

In an optical waveguide device using a convex optical waveguide, the absorption loss of guided light at an intersection between an optical waveguide and an electrode is reduced, without deteriorating optical characteristics and reducing long-term reliability. Provided is an optical waveguide device including a substrate on which an optical waveguide is formed, and an electrode having an intersection crossing over the optical waveguide on the substrate, in which the optical waveguide is formed with a protruding portion extending on the substrate, a resin layer is provided between the optical waveguide and the electrode at the intersection, the resin layer is formed to cover an upper surface and a side surface of the protruding portion of the optical waveguide, and in a cross section along a width direction of the optical waveguide, a boundary with the electrode is formed with a curve.

IPC Classes  ?

• G02F 1/035 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect in an optical waveguide structure
• G02F 1/21 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour by interference
• G02B 6/42 - Coupling light guides with opto-electronic elements

Abstract

This ceramic joined body comprises: a pair of ceramic plates; an electrode layer interposed between the pair of ceramic plates; and a joining layer that is disposed between the pair of ceramic plates and at the perimeter of the electrode layer. The joining layer and at least one of the pair of ceramic plates is formed from a composite of an insulative material and an electroconductive material. A gap is provided between an outer border of the electrode layer and an inner border of the joining layer. The content ratio of the electroconductive material in the joining layer and the at least one of the pair of ceramic plates is 3-12% by mass.

IPC Classes  ?

• H01L 21/683 - Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components for supporting or gripping
• C04B 37/00 - Joining burned ceramic articles with other burned ceramic articles or other articles by heating

Abstract

The purpose of the present invention is to remove unnecessary light propagating through a substrate and suppress deterioration of drift characteristics. The purpose of the present invention is to further provide an optical waveguide element capable of suppressing propagation losses of high-frequency signals.　This optical waveguide element has an optical waveguide 10 that is formed on a substrate 1, and an electrode (SE1, GE1) that is disposed on the substrate, and is characterized in that in at least part of a region on the substrate on which the electrode is formed, a first foundation layer 21 that is formed on the upper surface of the substrate 1 and comprises a first material, and a second foundation layer 20 that is formed on the upper surface of the first foundation layer and comprises a second material different from the first material are disposed, and the electrode is formed on the upper side of the second foundation layer.

IPC Classes  ?

• G02F 1/01 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour

Abstract

The zinc oxide powder according to the present invention has a BET specific surface area of 1.5 m2/g or more and less than 8 m2/g, an apparent specific volume of 0.8 mL/g to 4.0 mL/g inclusive when measured by a loose packing method, and a value determined by dividing an apparent specific volume (mL/g) measured by the loose packing method by an apparent specific volume (mL/g) measured by a tapping method (i.e., an (apparent specific volume measured by loose packing method)/(apparent specific volume measured by tapping method) value) of 1.50 to 2.50 inclusive.

IPC Classes  ?

• C01G 9/02 - Oxides; Hydroxides
• A61Q 1/00 - Make-up preparations; Body powders; Preparations for removing make-up
• A61Q 17/04 - Topical preparations for affording protection against sunlight or other radiation; Topical sun tanning preparations
• A61Q 19/00 - Preparations for care of the skin
• A61K 8/27 - Zinc; Compounds thereof

Abstract

A wafer support device includes a dielectric substrate and an RF electrode provided in the dielectric substrate. The RF electrode is divided into a plurality of zone electrodes arranged in a planar direction of the dielectric substrate. The wafer support device has: a short-circuit member interconnecting the plurality of zone electrodes; and a main power supply rod connected to the short-circuit member from a back side of the dielectric substrate.

IPC Classes  ?

• H01J 37/32 - Gas-filled discharge tubes
• H01L 21/683 - Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components for supporting or gripping

Abstract

Provided is an optical waveguide device in which both signal electrode collapse and signal electrode peeling/damage can be prevented. An optical waveguide device in which an optical waveguide is formed on a substrate and a control electrode for controlling a light wave propagating through the optical waveguide is disposed on the substrate, is characterized in that, the control electrode includes a signal electrode, and the signal electrode has a narrow portion, where a width of the signal electrode on a substrate side is narrow, and a wide portion, where a width of the signal electrode on an upper portion side of the signal electrode is wide, a prevention film that is disposed in contact with the narrow portion of the signal electrode and that prevents the signal electrode from collapsing, is provided on the substrate, and at a position of the signal electrode where the narrow portion and the wide portion are connected, a surface of the prevention film is formed as a curved surface protruding toward the signal electrode, and a side surface of the signal electrode is formed along the curved surface.

IPC Classes  ?

• G02F 1/035 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect in an optical waveguide structure

Abstract

Surface-modified zinc oxide particles which have a silane coupling agent having an alkoxy group on surfaces thereof, in which d50 when measured with a laser diffraction/scattering type particle size distribution-measuring instrument by the following measurement method is 4 μm or less. (Measurement method) 10 g of the surface-modified zinc oxide particles, 88 g of cyclopentasiloxane, and 2 g of polyglyceryl-3 polydimethylsiloxyethyl dimethicone are mixed to obtain a liquid mixture, a dispersion treatment is performed on the obtained liquid mixture at 9,500 rpm for 5 minutes using a homogenizer to obtain a liquid dispersion, the liquid dispersion is diluted with cyclopentasiloxane so that a content of the surface-modified zinc oxide particles in the obtained liquid dispersion is 0.01% by mass to produce a measurement solution, and d50 is measured with the laser diffraction/scattering type particle size distribution-measuring instrument using the obtained measurement solution.

IPC Classes  ?

• A61K 8/02 - Cosmetics or similar toiletry preparations characterised by special physical form
• A61Q 17/04 - Topical preparations for affording protection against sunlight or other radiation; Topical sun tanning preparations

Abstract

An electrostatic chuck device includes: an electrostatic chuck plate having a dielectric substrate having a placement surface on which a wafer is placed and an adsorption electrode positioned in the dielectric substrate; a metal base supporting the electrostatic chuck plate from a back surface side opposite to the placement surface; and a focus ring installed on an outer peripheral portion of the electrostatic chuck plate and surrounding the placement surface. The electrostatic chuck plate has a ring adsorption region which is adsorbed to the focus ring and is located on a surface positioned on the same side as the placement surface and has a base adsorption region which is adsorbed to the metal base and located on a back surface opposite to the placement surface.

IPC Classes  ?

• H01J 37/32 - Gas-filled discharge tubes
• H01L 21/683 - Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components for supporting or gripping

Abstract

According to the present invention, an electrostatic chuck member comprises: a dielectric substrate that has a mounting surface for mounting a sample and includes a first support plate and a second support plate that are layered in the thickness direction; and an adsorption electrode that is embedded in the dielectric substrate. A gas channel is formed between the first support plate and the second support plate as a groove that is provided in at least one of the surfaces that are opposite each other and is covered by the other. The height-direction measurement of the gas channel is 90–300 μm, and the width measurement of the gas channel is at least 500 μm but less than 3000 μm.

IPC Classes  ?

• H02N 13/00 - Clutches or holding devices using electrostatic attraction, e.g. using Johnson-Rahbek effect
• C04B 37/00 - Joining burned ceramic articles with other burned ceramic articles or other articles by heating
• H01L 21/683 - Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components for supporting or gripping

Abstract

233344AF

IPC Classes  ?

• C04B 7/02 - Portland cement
• C04B 24/12 - Nitrogen containing compounds
• C04B 28/02 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates

Abstract

This electrostatic chuck member comprises: a dielectric substrate that is provided with a placement surface on which a sample is placed, the direction orthogonal to the placement surface being the thickness direction; and an adsorption electrode embedded inside the dielectric substrate. Inside the dielectric substrate, a gas flow path extending along the planar direction of the placement surface is provided. The inner surface of the gas flow path is provided with a bottom surface facing the same direction as the placement surface, a top surface opposite the bottom surface, and a pair of side surfaces connecting the bottom surface and the top surface. At least one of the pair of side surfaces is inclined with respect to the thickness direction.

IPC Classes  ?

• H02N 13/00 - Clutches or holding devices using electrostatic attraction, e.g. using Johnson-Rahbek effect
• C04B 37/00 - Joining burned ceramic articles with other burned ceramic articles or other articles by heating
• H01L 21/683 - Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components for supporting or gripping

Abstract

An optical modulator includes: an optical waveguide element including an optical waveguide formed on a substrate and a signal electrode for controlling a light wave propagating through the optical waveguide; a drive circuit for outputting two high-frequency signals; and two terminating resistors for respectively terminating outputs of the two high-frequency signals from the drive circuit. The output of one of the high-frequency signals of the drive circuit propagates through the signal electrode of the optical waveguide element and is terminated by a first terminating resistor which is one of the terminating resistors. The output of the other of the high-frequency signals of the drive circuit is terminated by a second terminating resistor which is the other of the terminating resistors. A resistance value of the second terminating resistor is greater than a resistance value of the first terminating resistor.

IPC Classes  ?

• G02F 1/01 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
• G02F 1/225 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour by interference in an optical waveguide structure

Abstract

This electrostatic chuck device comprises: an electrostatic chuck plate having a dielectric substrate provided with a mounting surface on which a sample is placed, and an adsorption electrode positioned inside the dielectric substrate; and a base supporting the electrostatic chuck plate from the side opposite to the mounting surface. The electrostatic chuck plate is provided with a first through-hole that supplies gas to the mounting surface, and a porous body that allows the gas to pass therethrough is inserted in the first through-hole. A first adhesive layer that adheres the inner circumferential surface of the first through-hole and the outer circumferential surface of the porous body together is provided between the inner circumferential surface and the outer circumferential surface. The thickness dimension of the first adhesive layer is 0-0.15 mm in at least a region up to 0.1 mm from the mounting surface.

IPC Classes  ?

• H01L 21/683 - Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components for supporting or gripping
• H02N 13/00 - Clutches or holding devices using electrostatic attraction, e.g. using Johnson-Rahbek effect

Abstract

Provided is an optical control element that can minimize an optical path difference between branched waveguides while reducing a difference in structure between the branched waveguides by disposing an input portion and an output portion of an optical waveguide on the same side of a substrate on which the optical waveguide is formed. An optical control element includes a substrate 1 having an electro-optic effect, an optical waveguide 2 formed on the substrate, and a control electrode controlling a light wave propagating through the optical waveguide, in which an input portion (input light L1) and an output portion (output light L2) of the optical waveguide are formed on the same side of the substrate, the optical waveguide includes at least one Mach-Zehnder type optical waveguide portion (MZ) that has two branched waveguides (21, 22) branched from one optical waveguide and combines the two branched waveguides to form one optical waveguide, and the branched waveguides have an even number of turned-back potions (A1, A2).

IPC Classes  ?

• G02F 1/225 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour by interference in an optical waveguide structure
• G02F 1/21 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour by interference

Abstract

To provide an optical waveguide device in which damage to a thin plate, particularly damage to an optical waveguide, is prevented. An optical waveguide device includes: a thin plate 1 that has an electro-optic effect and that has a thickness of equal to or thinner than 10 μm, an optical waveguide 2 being formed on the thin plate; and a reinforcing substrate that supports the thin plate, in which the thin plate 1 has a rectangular shape in a plan view, a dissimilar element layer 3, in which an element different from an element constituting the thin plate is disposed in the thin plate, is formed on at least a portion between an outer periphery of the thin plate and the optical waveguide 2, and a total length over which a cleavage plane of the thin plate traverses a region where the dissimilar element layer is formed, is equal to or longer than 5% of a width of the thin plate in a short side direction.

IPC Classes  ?

• G02B 6/42 - Coupling light guides with opto-electronic elements

Abstract

These surface-treated metal oxide particles are metal oxide particles surface-treated with a silane coupling agent having an alkoxy group, in which the metal oxide particles have an ultraviolet shielding property, a weight loss of the surface-treated metal oxide particles on drying at 105° C. for 3 hours is 0.5% by mass or less, a peak derived from the alkoxy group is not detected in a reflection spectrum of the surface-treated metal oxide particles in 900 cm−1 to 1300 cm−1, which is measured by a Fourier transform infrared spectrophotometer, and a value (D98/BET converted diameter) obtained by dividing a dry particle size D98 (μm) thereof by a BET-converted particle diameter (nm) thereof is 0.01 or more and 5.0 or less.

IPC Classes  ?

• C09C 3/12 - Treatment with organosilicon compounds
• A61K 8/27 - Zinc; Compounds thereof
• A61Q 17/04 - Topical preparations for affording protection against sunlight or other radiation; Topical sun tanning preparations

Abstract

The purpose of the present invention is to provide an optical device which enables size reduction and suppresses increase in manufacturing cost.　This optical device houses an optical component in a housing, and is characterized by having an optical component fixing member OF on which the optical component is mounted, and characterized in that a side surface part CS and a bottom surface part CB of the housing are joined, and the optical component fixing member OF abuts on the side surface part CS and is joined to the bottom surface part CB.

IPC Classes  ?

• G02F 1/01 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
• G02B 6/30 - Optical coupling means for use between fibre and thin-film device

Abstract

The purpose of the present invention is to provide an optical modulator that reduces propagation loss associated with the transmission of high-frequency signals.　An optical modulator, in which an electro-optic conversion element E/OC and a driver circuit DRV for driving the electro-optic conversion element are accommodated in the same housing CA, comprises: a multiplexer MUX that converts an input modulation signal, which is input from outside the housing, into an output modulation signal having a higher frequency than the input modulation signal, and supplies the output modulation signal to the driver circuit, wherein the multiplexer is accommodated in the housing CA.

IPC Classes  ?

• G02F 1/03 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect

Abstract

The present invention provides a method whereby carbon dioxide can be efficiently fixed and calcium carbonate, which is a valuable, can be efficiently produced from the carbon dioxide, and whereby waste gypsum boards can be effectively utilized for fixing carbon dioxide without being discarded. This method comprises a first step, in which a first solution, which contains an alkali metal hydroxide, is brought into contact with a gas including carbon dioxide to thereby yield a second solution, which contains an alkali metal salt, and a second step, in which the second solution is brought into contact with a gypsum-containing substance to thereby yield calcium carbonate.

IPC Classes  ?

• C01F 11/18 - Carbonates
• B01D 53/62 - Carbon oxides
• B01D 53/75 - Multi-step processes
• B01D 53/78 - Liquid phase processes with gas-liquid contact

Abstract

The present invention provides a method whereby carbon dioxide can be efficiently fixed and calcium carbonate, which is a valuable, can be efficiently produced from the carbon dioxide, and whereby waste gypsum boards can be effectively utilized for fixing carbon dioxide without being discarded. This method comprises a first step, in which a first solution, which contains an alkali metal hydroxide, is brought into contact with a gas including carbon dioxide to thereby yield a second solution, which contains an alkali metal salt, and a second step, in which the second solution is brought into contact with a gypsum-containing substance to thereby yield calcium carbonate.

IPC Classes  ?

• C01F 11/18 - Carbonates
• B01D 53/62 - Carbon oxides
• B01D 53/75 - Multi-step processes
• B01D 53/78 - Liquid phase processes with gas-liquid contact

Abstract

Provided is an optical waveguide element that suppresses deterioration of characteristics such as velocity matching, characteristic impedance matching, and optical loss due to positional deviation of each electrode layer even when a control electrode is formed of a plurality of electrode layers.　An optical waveguide element is characterized by having: a substrate 1 made of a material having an electro-optic effect; an optical waveguide 2 formed on the substrate 1; and control electrodes (E1, E2) arranged on the substrate with the optical waveguide interposed therebetween, in order to apply an electric field to the optical waveguide 2, wherein the control electrodes are composed of two or more electrode layers arranged on the substrate in the order of a first electrode layer E1 and a second electrode layer E2, an insulating layer IL is arranged covering the first electrode layer and interposing the optical waveguide, and extends to at least a portion of the upper surface of the first electrode layer, and at least portion of the second electrode layer E2 is formed on the upper surface of the insulating layer IL.

IPC Classes  ?

• G02F 1/035 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect in an optical waveguide structure

Abstract

The present invention improves the mechanical strength of a lens for optically coupling an optical waveguide and an optical fiber provided on a substrate.　This lens unit is for optically coupling an optical waveguide and an optical fiber provided on a substrate, and comprises: a lens part; and a holding part that holds the lens part. The holding part has, along one lateral surface through which the optical axis does not pass, a thick section in which the thickness measured in the optical axis direction is greater than that of other sections of the holding part.

IPC Classes  ?

• G02F 1/01 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
• G02B 6/32 - Optical coupling means having lens focusing means

Abstract

Provided is an optical waveguide element in which, even when a protruding portion such as a rib-type optical waveguide, a spot-size conversion part, or the like is formed on an optical waveguide substrate, optical loss is reduced by removing, from the vicinity of the optical waveguide and the like, air bubbles in an adhesive layer that joins a reinforcement member. This optical waveguide element comprises optical waveguide substrates (1, 2) provided with optical waveguides (10, 12), a reinforcement member (3) disposed on an upper side of the optical waveguides (10, 12) in the vicinity of an end of the optical waveguides (10, 12), the optical waveguide substrates (1, 2) and the reinforcement member (3) being joined via an adhesive layer (4), wherein the optical waveguide element is characterized in that a protection layer (13) covering the optical waveguides (10, 12) is provided on the optical waveguides (10, 12) positioned below the reinforcement member (3), and the adhesive layer (4) is disposed outside the protection layer (13).

IPC Classes  ?

• G02F 1/035 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect in an optical waveguide structure
• G02B 6/122 - Basic optical elements, e.g. light-guiding paths
• G02B 6/30 - Optical coupling means for use between fibre and thin-film device
• G02B 6/42 - Coupling light guides with opto-electronic elements

Abstract

The purpose of the present invention is to provide an optical waveguide element which is provided with a dielectric layer covering an optical waveguide and in which occurrence of defects such as peeling and cracking of the dielectric layer is suppressed.　This optical waveguide element comprises an optical waveguide 2 formed on a substrate 1 and a dielectric layer IL covering the optical waveguide, and is characterized in that the optical waveguide 2 is a rib-type optical waveguide, and at least part of a side surface along the longitudinal direction of the rib-type optical waveguide has a slope shape formed by a curved surface (R6).

IPC Classes  ?

• G02F 1/01 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
• G02B 6/122 - Basic optical elements, e.g. light-guiding paths
• G02B 6/136 - Integrated optical circuits characterised by the manufacturing method by etching

Abstract

An optical waveguide element includes a substrate having an electro-optic effect, an optical waveguide formed in the substrate, and a control electrode arranged on the substrate to modulate a light wave propagating through the optical waveguide. The control electrode includes a signal electrode and a ground electrode. The signal electrode and the ground electrode are arranged along a modulation effect portion of the optical waveguide that performs modulation. In a shape of a bottom surface of the ground electrode facing the substrate, a slit separating the ground electrode into a first ground electrode close to the signal electrode and a second ground electrode far from the signal electrode is formed in a range corresponding to the modulation effect portion.

IPC Classes  ?

• G02F 1/035 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect in an optical waveguide structure

Abstract

A dispersion liquid contains a metal oxide particle surface-modified with a silane compound and a silicone compound, when a transmission spectrum of the metal oxide particles that are obtained by vacuum-drying the dispersion liquid is measured in a wavenumber range of 800 cm−1 or more and 3800 cm−1 or less with FT-IR, IA/IB≤3.5 is satisfied (IA is a spectrum value at 3,500 cm−1 and IB is a spectrum value at 1,100 cm−1), and, when the dispersion liquid and methyl phenyl silicone are mixed such that a mass ratio of a total mass of the metal oxide particles and the surface-modifying material to a mass of methyl phenyl silicone becomes 30:70 and the hydrophobic solvent is removed, a viscosity is 9 Pa·s or less.

IPC Classes  ?

• C08K 9/06 - Ingredients treated with organic substances with silicon-containing compounds
• C08K 3/22 - Oxides; Hydroxides of metals
• C09D 183/04 - Polysiloxanes

Abstract

Provided are a calcium carbonate generation method and a system that make it possible to use calcium-containing waste to generate high-purity calcium carbonate.?According to the present invention, a calcium carbonate generation method that generates calcium carbonate from calcium-containing waste is characterized by having a calcium dissolution step for adding aqueous hydrochloric acid to the calcium-containing waste to dissolve the calcium and generate an aqueous solution that includes calcium ions, a separation step for adjusting a hydrogen ion concentration index for the aqueous solution that includes the calcium ions and separating a component that includes at least one substance selected from the group that consists of Si, Al, Mg, and heavy metals from the aqueous solution, and a calcium carbonate recovery step for using the aqueous solution obtained via the separation step and an aqueous solution that includes potassium carbonate and/or sodium carbonate to generate calcium carbonate.

IPC Classes  ?

• C01F 11/18 - Carbonates
• B09B 3/70 - Chemical treatment, e.g. pH adjustment or oxidation
• C01D 7/32 - Purification by dialysis
• C04B 7/60 - Methods for eliminating alkali metals or compounds thereof

Abstract

Provided is an optical waveguide element comprising an optical waveguide and a spot size conversion unit that connects thereto, the optical waveguide element suppressing propagation loss more than in a case where an insulating layer covering the optical waveguide is provided.　This optical waveguide element comprises an optical waveguide 2 formed on a substrate 1, and a spot size conversion unit SSC that is on at least one end of the optical waveguide 2 and changes the mode field diameter of light waves propagating through the optical waveguide. The optical waveguide element is characterized by comprising an insulating layer IL covering at least the upper surface of the optical waveguide, and having the insulating layer IL continuously disposed along the optical waveguide up to the spot size conversion unit SSC.

IPC Classes  ?

• G02B 6/122 - Basic optical elements, e.g. light-guiding paths

Abstract

This optical waveguide element comprises: optical waveguides (232, 234, 240a-b, 248a-b) formed by projection parts extending on a substrate (500); and signal electrodes (250a-d) for controlling light waves propagating through the optical waveguides. The optical waveguides include Mach-Zehnder type optical waveguides (244a-d) provided with two parallel waveguides (246a1-a2) having bent parts. The signal electrodes are composed of two signal lines (252d1-d2) which respectively intersect the two parallel waveguides (246a1-a2) at the bent parts and through which differential signals are transmitted. In an intersection region (400a3) where the two signal lines (252d1-d2) and the two parallel waveguides (246a1-a2) intersect each other, at least one of the two signal lines (252d1-d2) has a signal propagation speed faster than that at a part other than the intersection region (400a3) or one of the two signal lines (252d1-d2) has a signal propagation speed faster than that of the other.

IPC Classes  ?

• G02F 1/035 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect in an optical waveguide structure
• G02B 6/125 - Bends, branchings or intersections

Abstract

Provided are a calcium carbonate generation method and a system that make it possible to use calcium-containing waste to generate high-purity calcium carbonate.　According to the present invention, a calcium carbonate generation method that generates calcium carbonate from calcium-containing waste is characterized by having a calcium dissolution step for adding aqueous hydrochloric acid to the calcium-containing waste to dissolve the calcium and generate an aqueous solution that includes calcium ions, a separation step for adjusting a hydrogen ion concentration index for the aqueous solution that includes the calcium ions and separating a component that includes at least one substance selected from the group that consists of Si, Al, Mg, and heavy metals from the aqueous solution, and a calcium carbonate recovery step for using the aqueous solution obtained via the separation step and an aqueous solution that includes potassium carbonate and/or sodium carbonate to generate calcium carbonate.

IPC Classes  ?

• C01F 11/18 - Carbonates
• B09B 3/70 - Chemical treatment, e.g. pH adjustment or oxidation
• C01D 7/32 - Purification by dialysis
• C04B 7/60 - Methods for eliminating alkali metals or compounds thereof

Abstract

A ceramic joined body (1) includes: a pair of ceramic plates (2,3) that include a conductive material; a conductive layer (4) and an insulating layer (5) that are interposed between the pair of ceramic plates (2, 3); and a pair of intermediate layers (6, 7) that are interposed between the pair of ceramic plates (2, 3) and the conductive layer (4) and are in contact with the pair of ceramic plates (2, 3) and the conductive layer (4).

IPC Classes  ?

• H01L 21/683 - Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components for supporting or gripping
• C04B 37/00 - Joining burned ceramic articles with other burned ceramic articles or other articles by heating

Abstract

In order to provides an optical waveguide element and an optical modulator that can prevent the damage to the substrate and the deterioration of the properties of the substrate that may occur due to the stress, by reducing the influence of stress on the substrate by the buffer layer, the optical waveguide 1 is provided with a substrate 5 having an electro-optical effect; an optical waveguide 10 formed on the substrate 5; a first buffer layer 9a provided on the substrate 5; and a second buffer layer 9b provided under the substrate 5, wherein the first buffer layer 9a and the second buffer layer 9b are composed of substantially the same material and have substantially the same thickness, and the first buffer layer 9a and the second buffer layer 9b are formed to be in contact with an upper surface and lower surface of the substrate 5, respectively.

IPC Classes  ?

• G02F 1/035 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect in an optical waveguide structure
• G02F 1/21 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour by interference
• G02B 6/13 - Integrated optical circuits characterised by the manufacturing method

Abstract

The present invention effectively suppresses, in an optical waveguide element having a plurality of intersection parts between a protruding optical waveguide and a signal electrode, the occurrence of disturbed modulation in the intersection parts, thereby achieving good operation characteristics.　This optical waveguide element comprises an optical waveguide configured by a protruding part extending on a substrate, and a signal electrode that is formed on the substrate and controls a light wave propagating through the optical waveguide. The optical waveguide includes a Mach-Zehnder type optical waveguide provided with two parallel waveguides each having a curved part, the signal electrode comprises two signal lines that each intersect with the two parallel waveguides in the curved part and transmit a differential signal, and each of the two signal lines is configured such that the lengths of intersection with the two parallel waveguides are the same.

IPC Classes  ?

• G02F 1/035 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect in an optical waveguide structure

Abstract

A ceramic joined body (1) includes: a pair of ceramic plates (2,3) that include a conductive material; and a conductive layer (4) and an insulating layer (5) that are interposed between the pair of ceramic plates (2, 3), a porosity at an interface between the pair of ceramic plates (2, 3) and the insulating layer (5) is 4% or less, and a ratio of an average primary particle diameter of an insulating material which forms the insulating layer (5) to an average primary particle diameter of an insulating material which forms the ceramic plates (2, 3) is more than 1.

IPC Classes  ?

• C04B 37/00 - Joining burned ceramic articles with other burned ceramic articles or other articles by heating
• H01L 21/683 - Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components for supporting or gripping
• C04B 35/117 - Composites
• C04B 35/565 - Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on carbides based on silicon carbide
• C04B 41/50 - Coating or impregnating with inorganic materials
• C04B 41/87 - Ceramics
• C04B 41/89 - Coating or impregnating for obtaining at least two superposed coatings having different compositions

Abstract

There is provided an optical waveguide device including a substrate, an optical waveguide formed on the substrate, and a working electrode that controls a light wave propagating through the optical waveguide, in which the working electrode includes a first base layer made of a first material, and a first conductive layer on the first base layer, and a conductor pattern including a second base layer made of a second material different from the first material and a second conductive layer on the second base layer is formed in a region other than a path from an input end to an output end of the optical waveguide, in a region on the substrate.

IPC Classes  ?

• G02F 1/225 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour by interference in an optical waveguide structure
• G02F 1/21 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour by interference
• H04B 10/516 - Transmitters - Details of coding or modulation

Abstract

There is provided an optical waveguide device including: a substrate; an optical waveguide formed on the substrate; and a working electrode that controls a light wave propagating through the optical waveguide, in which the working electrode includes a first base layer made of a first material, a first conductive layer on the first base layer, a second base layer made of a second material different from the first material, which is on the first conductive layer, and a second conductive layer on the second base layer, and an edge of the second base layer is covered with the second conductive layer, in a cross-section perpendicular to an extending direction of the optical waveguide.

IPC Classes  ?

• G02B 6/12 - Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
• G02B 6/136 - Integrated optical circuits characterised by the manufacturing method by etching
• G02F 1/21 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour by interference
• G02F 1/035 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect in an optical waveguide structure
• G02F 1/225 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour by interference in an optical waveguide structure

Abstract

An optical modulator includes a relay substrate having signal conductor patterns that connect input signal terminals and signal electrodes of an optical modulation element and ground conductor patterns, and a housing that accommodates the optical modulation element and the relay substrate. Regarding at least one signal conductor pattern, the two ground conductor patterns sandwiching the signal conductor pattern are formed in an asymmetrical shape in a plan view in a rectangular connection area including a signal connection portion at which the signal conductor pattern and the input signal terminal are connected. The connection area is centered on the at least one signal conductor pattern in a width direction, and has a width equal to a distance to the nearest adjacent signal conductor pattern and a height equal to a distance from an end of the signal connection portion farthest from a signal input side to the signal input side.

IPC Classes  ?

• G02F 1/035 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect in an optical waveguide structure
• G02F 1/03 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect

Abstract

An optical modulator includes: an optical modulation element that is configured to generate two modulated light beams, each of which is modulated by two sets of electrical signals, and that includes a plurality of signal electrodes; a plurality of signal input terminals, each of which inputs an electrical signal; a relay substrate on which a plurality of signal conductor patterns and a plurality of ground conductor patterns are formed, the relay substrate being configured to propagate the two sets of electrical signals by two pairs of the adjacent signal conductor patterns; and a housing, in which the at least two signal conductor patterns including at least one parts mounting part including electrical circuit elements are configured such that first signal propagation directions, which are signal propagation directions at the parts mounting parts, are different from each other.

IPC Classes  ?

• G02F 1/03 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect
• G02F 1/01 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
• G02F 1/035 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect in an optical waveguide structure

Abstract

An optical modulator includes: an optical modulation element including a plurality of signal electrodes and generating two modulated light beams, each of which is modulated by two sets of electrical signals; a plurality of signal input terminals, each of which inputs an electrical signal; a relay substrate on which a plurality of signal and ground conductor patterns are formed, the relay substrate propagating the two sets of electrical signals by two pairs of the adjacent signal conductor patterns; and a housing, in which at least one signal conductor pattern includes at least one component mounting portion including at least a parallel circuit of a resistor and a capacitor, and the relay substrate includes a metal body connected on the ground conductor pattern or a substrate removal portion that sandwiches a portion of the signal conductor pattern downstream of the component mounting portion along a propagation direction of the electrical signal.

IPC Classes  ?

• G02F 1/01 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
• G02F 1/03 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect

Abstract

The purpose of the present invention is to provide an optical waveguide element which can efficiently remove higher-order mode light even when the width or height of an optical waveguide is small, and can be easily manufactured.　This optical waveguide element is provided with a substrate 1 on which a rib-type optical waveguide 10 is formed, and is characterized by being provided with a slab waveguide SW disposed near the rib-type optical waveguide 10, and in that the roughness of at least a part (SF1) of an upper surface of the slab waveguide SW is larger than the roughness (SF0) of the surface of a top part of the rib-type optical waveguide.

IPC Classes  ?

• G02B 6/12 - Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
• G02F 1/035 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect in an optical waveguide structure

Abstract

Provided is an optical waveguide element whereby it is possible to prevent dropout of an optical component due to internal stress that occurs in a joint between the optical component and an optical waveguide member including a substrate on which an optical waveguide is formed, and to simplify a manufacturing step pertaining to polishing of a joining surface.　An optical waveguide element comprising: an optical waveguide member including a substrate 1 on which an optical waveguide is formed; and an optical component 3 that is fixed to an optical waveguide member end surface (B0) on which an input part or an output part of the optical waveguide is disposed, and that transmits input light inputted to the input part or transmits output light outputted from the output part, wherein the optical waveguide element is characterized in that portions (B1, B2) having greater roughness than the end surface (B0) of the optical waveguide member including the input part or the output part are provided in at least a portion of the optical waveguide member, which is the portion thereof to which the optical component 3 is fixed.

IPC Classes  ?

• G02B 6/32 - Optical coupling means having lens focusing means
• G02F 1/035 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect in an optical waveguide structure

Abstract

The purpose of the present invention is to provide an optical waveguide element in which, even when protruding portions such as a Ti or the like-diffused waveguide, a rib-type optical waveguide, and a spot-size conversion part are formed on an optical waveguide substrate, an optical loss is reduced by removing air bubbles in an adhesive joining a reinforcement member from the neighborhoods of the optical waveguide and the like.　This optical waveguide element comprises an optical waveguide substrate 1 provided with an optical waveguide 10 formed by a material having an electro-optical effect, and a reinforcement member 3 disposed on the upper side of the optical waveguide in the vicinity of an end of the optical waveguide, the optical waveguide substrate 1 and the reinforcement member 3 being joined via an adhesive layer 4, and is characterized in that a groove 31 is formed in a surface facing the optical waveguide substrate 1 of the reinforcement member 3.

IPC Classes  ?

• G02B 6/122 - Basic optical elements, e.g. light-guiding paths
• G02F 1/035 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect in an optical waveguide structure

Abstract

The purpose of the present invention is to provide an optical waveguide element in which a place where a light loss such as a propagation loss or a coupling loss occurs can be easily specified.　An optical waveguide element is provided with a substrate 1 on which an optical waveguide 2 is formed, and is characterized by being provided with a grating 6 formed in part of the optical waveguide 2 or a grating 6 connected to a monitor optical waveguide 5 that merges with or branches off from part of the optical waveguide 2, and inputting a light wave to the optical waveguide or outputting at least part of a light wave propagating through the optical waveguide via the grating 6.

IPC Classes  ?

• G02B 6/12 - Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
• G02B 6/124 - Geodesic lenses or integrated gratings
• G02B 6/42 - Coupling light guides with opto-electronic elements
• G02F 1/035 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect in an optical waveguide structure

Abstract

An optical waveguide device includes a substrate, an optical waveguide formed on the substrate, two electrodes disposed at positions sandwiching the optical waveguide from both sides in a plane of the substrate; and a dielectric layer covering a top of the optical waveguide, wherein the dielectric layer extends in a width direction of the optical waveguide to an extent including edges of the two electrodes, facing the optical waveguide, and is disposed to partially cover each of the two electrodes.

IPC Classes  ?

• G02F 1/225 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour by interference in an optical waveguide structure
• G02F 1/21 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour by interference

Abstract

3444AF is more than 0.4290 nm3, and the Blaine's specific surface area of the cement composition is 2800-3500 cm2/g. The cement composition has high strength and excellent fluidity.

IPC Classes  ?

• C04B 7/02 - Portland cement
• C04B 7/52 - Grinding
• C04B 22/10 - Acids or salts thereof containing carbon in the anion, e.g. carbonates
• C04B 22/14 - Acids or salts thereof containing sulfur in the anion, e.g. sulfides
• C04B 24/02 - Alcohols; Phenols; Ethers
• C04B 24/12 - Nitrogen containing compounds

Abstract

The purpose of the present invention is to prevent a fluctuation in electrical characteristics due to adhesion of foreign matter to electrodes in an optical waveguide element without adversely affecting the degree of freedom of electrode design.　An optical waveguide element (100) is provided with: a substrate (102); an optical waveguide (104) formed on the substrate (102); electrodes (114) for controlling light waves propagating through the optical waveguide (104); and a first insulating layer (120) provided between two neighboring electrodes (114) among the electrodes. The first insulating layer (120) has a larger height from the surface of the substrate (102) than the heights of the two electrodes (114).

IPC Classes  ?

• G02F 1/035 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect in an optical waveguide structure

Abstract

An optical waveguide element includes: a substrate; and a plurality of optical waveguides causing light to turn between a first direction and a second direction that is an opposite direction of the first direction in a plane of the substrate, the plurality of optical waveguides includes first portions extending in the first direction with a predetermined distance therebetween, second portions extending in a third direction that is different from the first direction, and third portions extending in the second direction, and each of the plurality of optical waveguides except for the optical waveguide in which the second portion extending in the third direction is located on an innermost side in the first direction intersects, at the third portion, another optical waveguide in which the second portion extending in the third direction is located further inward in the first direction.

IPC Classes  ?

• G02B 6/125 - Bends, branchings or intersections
• G02F 1/21 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour by interference
• G02B 6/12 - Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind

Abstract

Provided is an optical waveguide element that prevents leaked light generated at a forking section from entering a downstream optical waveguide such as another forking section, thereby affording minimal degradation of optical characteristics. The optical waveguide is characterized in that: at least one of two fork waveguides (20a, 20b) forking from a first forking section (20) comprises a second forking section (21, 22); slab waveguides (3c-1 to 3c-3) are formed between the two fork waveguides; and between the first forking section and the second forking section, slits (41, 42) are formed that partition the slab waveguides into a first slab waveguide area (3c-1) close to the first forking section and second slab waveguide areas (3c-2, 3c-3) close to the second forking section(s).

IPC Classes  ?

• G02B 6/125 - Bends, branchings or intersections

Abstract

An optical modulator includes a relay substrate having signal conductor patterns that connect signal input terminals and signal electrodes of an optical modulation element and ground conductor patterns, and a housing, in which the signal conductor pattern includes a component mounting portion including an electrical circuit element. Two ground conductor patterns sandwiching the signal conductor pattern are formed in an asymmetrical shape in a plan view within a component mounting area having a square shape in the plan view centered on the component mounting portion. A direction of a side of the component mounting area having the square shape is same as the extending direction of the signal conductor pattern and a length of a side of the component mounting area is equal to a distance from a center of the component mounting portion to a portion on an adjacent signal conductor pattern closest to the center.

IPC Classes  ?

• G02F 1/035 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect in an optical waveguide structure
• G02F 1/03 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect
• G02F 1/21 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour by interference

Abstract

Provided is an optical waveguide element that comprises a spot size conversion means that suppresses optical insertion loss without complicating a production process.　An optical waveguide element that comprises: an optical waveguide plate (4) that has a rib-type optical waveguide (10) that is formed from a material that has electrooptical effects; and a spot size conversion means that is positioned at an input end or an output end of the rib-type optical waveguide (10) and alters the mode field diameter of light waves that propagate through the optical waveguide. The optical waveguide element is characterized in that the spot size conversion means comprises: a first constituent layer (1) that comprises a tapered portion (11) that is connected to the rib-type optical waveguide (10) and expands the width of the optical waveguide; a second constituent layer (2) that has a narrower width than the first constituent layer (1) and is layered on the first constituent layer (1); and a third constituent layer (3) that has a wider width than the second constituent layer (2) and is provided to cover the second constituent layer (2) except for a portion of the second constituent layer (2) that is near the rib-type optical waveguide.

IPC Classes  ?

• G02B 6/122 - Basic optical elements, e.g. light-guiding paths
• G02F 1/035 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect in an optical waveguide structure