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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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.

IPC Classes  ?

• C01G 9/02 - Oxides; Hydroxides
• A61K 8/27 - Zinc; Compounds thereof
• A61K 8/891 - Polysiloxanes saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
• A61K 8/894 - Polysiloxanes saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone modified by a polyoxyalkylene group, e.g. cetyl dimethicone copolyol
• 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 modulator in which poor welding between a housing body and a lid part is suppressed.　This optical modulator is provided with a rectangular parallelepiped-shaped housing that houses at least an optical waveguide element, and is characterized in that: the housing is provided with a housing body 1 in which one surface of the rectangular parallelepiped becomes an opening, and a rectangular lid part 2 that closes the opening; a peripheral section of the lid part has a thinner thickness; a protruding section 20 protruding into the housing is formed in the lid part except the peripheral section; and when the lid part is fitted into the housing body, the distances between inner peripheries of end surfaces forming the opening of the housing body and outer ends of the protruding section are set such that a distance d1 formed on each short-side side of the lid part is larger than a distance d2 formed on each long-side side of the lid 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
• B23K 11/06 - Resistance welding; Severing by resistance heating using roller electrodes
• H04B 10/516 - Transmitters - Details of coding or modulation

Abstract

Provided is an optical modulator with which a signal electrode and a signal wire of a wiring board can be reliably electrically connected, even if the width of the signal electrode in an operation part of an optical control board is narrow.　The optical modulator comprises an optical control board (1) having an optical waveguide (OW) which includes at least a branching waveguide that branches one light wave into two and a control electrode which is for applying an electrical field to the branching waveguide and a wiring board provided with wiring which relays an electrical signal applied to the control electrode or wiring which terminates the electrical signal, said optical modulator being characterized in that: the control electrode is provided with a signal electrode (S); the wiring is provided with a signal wire; and at a part (Sc) where the signal electrode (S) and the signal wire are electrically connected, the spacing (W1) at which the branching waveguide (OW) sandwiches the signal electrode is wider than the spacing (W2) at which the branching waveguide sandwiches the signal electrode at an operation part where the control electrode applies the electrical field to the branching waveguide.

IPC Classes  ?

• G02F 1/35 - Non-linear optics

Abstract

A ceramic assembly 1 comprises a pair of ceramic plates 2, 3, and an electrode layer 4 and an insulating layer 5 which are interposed between the pair of ceramic plates 2, 3, wherein the insulating layer 5 is composed of an insulating material and a conductive material.

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

The purpose of the present invention is to provide an optical modulator in which crosstalk of a modulation signal can be suppressed even when a wiring substrate is disposed to overlap with a modulation substrate.　This optical modulator comprises: a modulation substrate 1 having an optical waveguide and a modulation electrode 10 for modulating a light wave propagating through the optical waveguide; and a wiring substrate 2 on which wiring 22 for relaying a modulation signal to be applied to the modulation electrode 10 is provided. The optical modulator is characterized in that the wiring substrate is disposed to overlap with the modulation substrate so as to cover an action part on which modulation is performed by the modulation electrode, and on the wiring substrate, an electric wave absorbing member SH is disposed at at least part of a position facing the action part.

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 optical waveguide element having an SSC structure that, while being reduced in size, is capable of suppressing insertion loss related to coupling with an optical fiber etc. and has high light resistance, heat resistance, or production efficiency.　The optical waveguide element comprising: an optical waveguide substrate 1 having a rib-type optical waveguide 10 formed of a material having an electro-optical effect; and a holding member 2 that is arranged and fixed in superposition on the optical waveguide substrate at a position where an input end or an output end of the rib-type optical waveguide is formed is characterized in that another optical waveguide 20 having a mode field diameter larger than that of the rib-type optical waveguide is formed on the surface of the holding member facing the rib-type optical waveguide, and the optical waveguide substrate and the holding member are joined by an adhesive layer 30.

IPC Classes  ?

• G02B 6/30 - Optical coupling means for use between fibre and thin-film device
• 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 effectively suppresses, in an optical waveguide element having a plurality of intersection parts at which a protruding optical waveguide and a signal electrode intersect, the occurrence of disturbed modulation at the intersection parts, so as to achieve good operation characteristics.　This optical waveguide element comprises: a substrate on which an optical waveguide is formed; an intermediate layer which is formed on the substrate; and a signal electrode and a ground electrode which are formed on the intermediate layer. The optical waveguide is constituted by a protruding part which extends on the substrate. The signal electrode has an operation part which extends along the optical waveguide to control light waves propagating through the optical waveguide, and intersection parts which intersect the optical waveguide thereabove. The intermediate layer is formed so as to be thicker at the intersection parts than at the operation part.

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 an optical waveguide element according to the present invention, good bonding location precision is realized without substrate etching even when the size and spacing of electrode pads is reduced.　This optical waveguide element has provided, to a substrate, an optical waveguide and an electrode pad to which a conductive wire is bonded, wherein the electrode pad includes a bonding area at which the conductive wire is bonded, and an intermediate layer is provided between the substrate and the electrode pad and forms a step at a location surrounding the bonding area on the substrate.

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 1/035 - 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 zinc oxide powder which has a BET specific surface area (X) of 1.5 m2/g to 65 m2/g, inclusive, also has a value determined from the formula: [apparent specific volume (mL/g) determined by a layering method]/[apparent specific volume (mL/g) determined by a tap method] is 1.5 to 2.5, inclusive, and satisfies the below-shown formulae (1) and (2). (1): A1/E2=aX+0.06 (2): (M2-M1)/E2≧0.02

IPC Classes  ?

• C01G 9/02 - Oxides; Hydroxides
• C09C 3/00 - Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
• C09D 17/00 - Pigment pastes, e.g. for mixing in paints
• 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
• C09D 201/00 - Coating compositions based on unspecified macromolecular compounds
• A61K 8/04 - Dispersions; Emulsions
• A61K 8/27 - Zinc; Compounds thereof
• C09D 7/61 - Additives non-macromolecular inorganic
• C09D 7/62 - Additives non-macromolecular inorganic modified by treatment with other compounds

Abstract

Provided is zinc oxide powder in which the BET specific surface area is 8 m2/g to 65 m2/g, the apparent specific volume measured by a loose packing method is 1.0 mL/g to 7.5 mL/g, and the value obtained by dividing the apparent specific volume (mL/g) measured by the loose packing method by the apparent specific volume (mL/g) measured by a tapping method (apparent specific volume measured by loose packing method/apparent specific volume measured by tapping method) is 1.50 to 2.50.

IPC Classes  ?

• C01G 9/02 - Oxides; Hydroxides
• A61K 8/04 - Dispersions; Emulsions
• A61K 8/27 - Zinc; Compounds thereof
• 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
• C09C 3/00 - Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
• C09C 3/06 - Treatment with inorganic compounds
• C09C 3/08 - Treatment with low-molecular-weight organic compounds
• C09D 17/00 - Pigment pastes, e.g. for mixing in paints

Abstract

An optical waveguide element (100) comprises a substrate (102), an optical waveguide (104) that is provided inside the substrate (102) or on the substrate (102), and an electrode (106) that is provided along the optical waveguide (104) and acts on the optical waveguide (104) to cause a phase change in an optical wave propagating through the optical waveguide (104), wherein the electrode (106) is a traveling-wave electrode, the electrode (106) and the optical waveguide (104) are configured such that in an action part (108) in which the optical wave is controlled by the electrode (106), a phase change caused in a first action section (108c) that is a range of a predetermined distance from a downstream-side end along the propagation direction of a traveling wave of an electric signal propagating through the electrode (106) is opposite in sign to a phase change caused in a second action section (108a) that is a range of a predetermined distance from an upstream-side input end of the electric signal 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

Abstract

This ceramic assembly comprises a pair of ceramic plates and an electrode layer interposed between the pair of ceramic plates, wherein: the electrode layer is buried in at least one of the pair of ceramic plates; and at an outer edge of the electrode layer, the joint surface between the at least one of the pair of ceramic plates and the electrode layer is tilted with respect to the thickness direction of the pair of ceramic plates and the electrode layer.

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
• C04B 35/117 - Composites
• 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

A dispersion solution according to the present invention comprises a solvent and metal oxide particles, the surfaces of which have been modified by means of at least one silane compound, wherein the silane compound contains a methyl group or contains a methyl group and a hydrocarbon group having a carbon number of 2 or higher, and formula (1) is satisfied when the transmission spectrum in the wavenumber range of 800-3800 cm-1 of metal oxide particles obtained by drying the dispersion solution by means of vacuum drying is measured using a Fourier transform infrared spectrophotometer and the values of the transmission spectrum in the aforementioned range are standardized such that the maximum value of the transmission spectrum is 100 and the minimum value is 0. Formula (1): IA/IB ≤ 3.5

IPC Classes  ?

• C01G 25/02 - Oxides
• C09C 1/00 - Treatment of specific inorganic materials other than fibrous fillers ; Preparation of carbon black
• C09C 3/08 - Treatment with low-molecular-weight organic compounds
• C08K 9/06 - Ingredients treated with organic substances with silicon-containing compounds
• C08L 83/04 - Polysiloxanes
• H01L 33/56 - Materials, e.g. epoxy or silicone resin

Abstract

Provided is an optical waveguide element wherein a more compact size is achieved, while also suppressing insertion loss that is associated with coupling with optical fibers or similar.　This optical waveguide element comprises: a rib-type optical waveguide (10) that is formed from a material (1) having an electro-optic effect; and a reinforcing substrate (2) that supports the optical waveguide, wherein the optical waveguide element is characterized in that one end of the optical waveguide makes up a tapered section (11) in which the width decreases toward an end surface of the reinforcing substrate, a structure (3) that is configured from a material with a higher refractive index than the material making up the reinforcing substrate is provided so as to cover the tapered section, and a covering layer (4) that is configured from a material with a lower refractive index than the material making up the structure is positioned so as to cover the structure.

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
• 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 comprising a rib-shaped optical waveguide (10) formed of a material having an electrooptic effect and a reinforcement substrate (3) that supports the optical waveguide, wherein: a spot size conversion unit (2) that changes a mode field diameter of light waves propagating the optical waveguide is provided at one end of the optical waveguide; a structure (S) is disposed to be spaced apart from the spot size conversion unit so that the spot size conversion unit is interposed therebetween, and is disposed on the reinforcement substrate (3); and the spot size conversion unit (2) and an upper substrate (4) disposed above the structure (S) are set such that the height (H) of the structure (S) is greater than or equal to the maximum height of the spot size conversion unit (2).

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

A dispersion solution according to the present invention satisfies formula (1) when the transmission spectrum in the wavenumber range of 800 cm-1to 3800 cm-1of metal oxide particles, the surfaces of which have been modified by means of at least one silicone compound and at least one silane compound that contains a methyl group and a hydrocarbon group having a carbon number of 2 or higher, obtained by vacuum drying a dispersion solution containing the metal oxide particles is measured using FT-IR and the values of the transmission spectrum are standardized. Formula (1): IA/IB ≤ 3.5 ("IA" is the standardized spectrum value at 3500 cm-1, and "IB" is the standardized spectrum value at 1100 cm-1.)

IPC Classes  ?

• C01G 25/02 - Oxides
• C08K 9/06 - Ingredients treated with organic substances with silicon-containing compounds
• C08L 63/00 - Compositions of epoxy resins; Compositions of derivatives of epoxy resins
• F21Y 115/10 - Light-emitting diodes [LED]
• H01L 33/56 - Materials, e.g. epoxy or silicone resin
• G09F 9/00 - Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
• F21S 2/00 - Systems of lighting devices, not provided for in main groups  or , e.g. of modular construction

Abstract

A dispersion solution according to the present invention satisfies IA/IB ≤ 3.5 when the transmission spectrum in the wavenumber range of 800 cm-1to 3800 cm-1of metal oxide particles, the surfaces of which have been modified by means of a methyl group and a phenyl group at a prescribed ratio, obtained by vacuum drying a dispersion solution containing the metal oxide particles is measured using FT-IR and the values of the transmission spectrum are standardized ("IA" is the standardized spectrum value at 3500 cm-1, and "IB" is the standardized spectrum value at 1100 cm-1).

IPC Classes  ?

• C01G 25/02 - Oxides
• C09C 1/00 - Treatment of specific inorganic materials other than fibrous fillers ; Preparation of carbon black
• C09C 3/08 - Treatment with low-molecular-weight organic compounds
• C08K 9/06 - Ingredients treated with organic substances with silicon-containing compounds
• C08L 83/04 - Polysiloxanes
• H01L 33/56 - Materials, e.g. epoxy or silicone resin

Abstract

This method, which is for repairing an electrostatic chuck device that is obtained by bonding an electrostatic chuck member composed of ceramics and a temperature adjusting base member composed of a metal through a first adhesive layer, comprises a step for repairing the eroded first adhesive layer using a normal-temperature curing-type adhesive.

IPC Classes  ?

• H02N 13/00 - Clutches or holding devices using electrostatic attraction, e.g. using Johnson-Rahbek effect
• H01L 21/3065 - Plasma etching; Reactive-ion etching
• 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

The purpose of the present invention is to provide a compact and low light loss optical waveguide element having long-term stability.　Provided is an optical waveguide element characterized by having an optical waveguide A (20) formed in a first substrate (2), having an incidence part through which a light wave is incident on the optical waveguide A or an emission part through which a light wave is emitted from the optical waveguide A in an end part of the first substrate, having an optical waveguide B (10) formed in a second substrate (1), having an optical modulation part for modulating a light wave propagating through the optical waveguide B in the second substrate, and having a conversion part (20) for converting an optical mode field diameter in at least part of the optical waveguide A (20).

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 1/035 - 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
• G02B 6/122 - Basic optical elements, e.g. light-guiding paths
• G02B 6/125 - Bends, branchings or intersections

Abstract

The purpose of the present invention is to effectively suppress the generation of loss in propagated light caused by the presence of an electrode for controlling propagated light in an optical waveguide element which uses a convex optical waveguide.　An optical waveguide element according to the present invention which has a substrate (220) on which an optical waveguide (226a) is formed, and also has electrodes (230a, 230b) which are formed on the substrate and control waves of light which propagate through the optical waveguide, wherein the optical waveguide (226a) is configured from a convex section (300) extending on the substrate, and the electrodes (230a, 230b) are each configured from a base layer (304a, 304b) comprising Nb and positioned between the substrate and an upper layer, and also from said upper layer (302a, 302b), which is formed on the base layer.

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 enables an optical modulator to be provided in which transmission loss from a driver circuit element to a modulation board is reduced.　An optical modulator, according to the present invention, in which a modulation board (1) that has an optical waveguide (200) and a modulation electrode (10) for modulating light waves propagated through the optical waveguide, and a driver circuit element (2) that generates modulation signals applied to the modulation electrode (10) are accommodated in a housing (3), the optical modulator being characterized in that an output terminal (20') for outputting modulation signals is provided on the upper surface side of the driver circuit element (2), and a wiring board (4) provided with wiring that electrically connects the output terminal (20') and the modulation electrode (10) is disposed straddling both the driver circuit element (2) and the modulation board (1) on the upper side thereof.

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 achieves favorable operating characteristics by inhibiting both optical waveguide light absorption loss at a plurality of intersecting sections between protruding optical waveguides and high frequency signal electrodes and signal propagation loss in the high frequency signal electrodes.　An optical waveguide element according to the present invention comprises a substrate on which optical waveguides are formed and electrodes that are formed on the substrate and have intersecting sections that intersect over the optical waveguides. The optical waveguides are formed of protrusions that extend from the substrate, and have, at adjacent intersecting sections along the electrodes, an intermediate layer made from resin that fills the spaces between the protrusions along the electrodes and covers the tops of the protrusions.

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

An electrostatic chuck device provided with: an electrostatic chuck plate having a dielectric substrate, which has a placement surface on which a wafer is placed, and an attraction electrode, which is positioned in the interior of the dielectric substrate; a metal base for supporting the electrostatic chuck plate from the rear-surface side, which is on the opposite side from the placement surface; and a focus ring that is installed at the outer peripheral portion of the electrostatic chuck plate, and surrounds the placement surface. The electrostatic chuck plate has, on the surface on the same side as the placement surface, a ring attraction area that is attracted to the focus ring, and has, on the rear surface on the opposite side from the placement surface, a base attraction area that is attracted to the metal base.

IPC Classes  ?

• H02N 13/00 - Clutches or holding devices using electrostatic attraction, e.g. using Johnson-Rahbek effect
• 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 electrostatic chuck device provided with: an electrostatic chuck plate having a dielectric substrate, which has a placement surface on which a wafer is placed, and an electrode, which is positioned in the interior of the dielectric substrate; a focus ring that is installed at the outer peripheral portion of the electrostatic chuck plate, and surrounds the placement surface; and a power supply connection part for connecting the electrode and a power supply. The electrostatic chuck plate has a first electrode which, in a planar view, is positioned in a region overlapping the placement surface, and a second electrode which, in a planar view, is positioned in a region overlapping the focus ring. The power supply connection part includes power supply wiring electrically connecting the first electrode and the second electrode via a current adjustment device.

IPC Classes  ?

• H02N 13/00 - Clutches or holding devices using electrostatic attraction, e.g. using Johnson-Rahbek effect
• 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

This wafer support device is provided with a dielectric substrate and an RF electrode provided inside the dielectric substrate. The RF electrode is divided into a plurality of zone electrodes arrayed in the planar direction of the dielectric substrate. The wafer support device includes a short-circuit member connecting the plurality of zone electrodes, and a main-feeding rod connected to the short-circuit member from the back side of the dielectric substrate.

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

Abstract

In this optical waveguide device using a raised optical waveguide, absorption loss of guided waves at a portion where the optical waveguide and an electrode intersect is reduced without inviting a decrease in long-term reliability or deterioration in optical properties. According to the present invention, an optical modulator has a substrate that has an optical waveguide formed thereon, and an electrode that has an intersection portion intersecting an area over the optical waveguide on the substrate, wherein: the optical waveguide is formed from a raised portion extending on the substrate; a resin layer is provided between the optical waveguide and the electrode at the intersection portion; and the resin layer is formed covering the upper surface and side surfaces of the raised portion of the optical waveguide, and configured such that the boundary between the resin layer and the electrode is curved in a cross section along the width direction 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 present invention pertains to surface-modified zinc oxide particles having, on a surface, a silane coupling agent that has an alkoxy group, the surface-modified zinc oxide particles being characterized in that a permeation rate coefficient A), of cyclopentasiloxane with respect to the surface-modified zinc oxide particles, represented by A in formula 1 below is 5.0 x 10-2g2/s or more and 1.0 x 102g2/s or less. (1): W2 = A・t (wherein, W is the permeation weight (units: g), and t is time (units: s)).

IPC Classes  ?

• C01G 9/02 - Oxides; Hydroxides
• A61K 8/27 - Zinc; Compounds thereof

Abstract

Surface-modified zinc oxide particles each of which has, on the surface thereof, a silane coupling agent having an alkoxy group, and which have a d50 value of 4 μm or less as measured with a laser diffraction/scattering particle size distribution measurement device by the following measurement method. (Measurement method) Ten grams of the surface-modified zinc oxide particles, 88 g of cyclopentasiloxane and 2 g of polyglyceryl-3 polydimethylsiloxyethyl dimethicone are mixed together to produce a mixed solution, the mixed solution is subjected to a dispersion treatment using a homogenizer at 9500 rpm for 5 minutes to produce a liquid dispersion, the liquid dispersion is diluted with cyclopentasiloxane in a manner such that the content of the surface-modified zinc oxide particles in the liquid dispersion can become 0.01% by mass to produce a measurement solution, and a d50 value is measured using the measurement solution with a laser diffraction/scattering particle size distribution measurement device.

IPC Classes  ?

• C01G 9/02 - Oxides; Hydroxides
• A61K 8/27 - Zinc; Compounds thereof

Abstract

Provided is an optical control element in which an input part and an output part of an optical waveguide are disposed on the same side of a substrate on which the optical waveguide is formed, and which makes it possible to minimize an optical path difference between branch waveguides while reducing a difference in structure between the branch waveguides.　Provided is an optical control element comprising a substrate 1 having an electro-optical effect, an optical waveguide 2 formed on the substrate, and a control electrode for controlling optical waves propagating through the optical waveguide, the optical control element being characterized in that: an input part (incident light L1) and an output part (emitted light L2) of the optical waveguide are formed on the same side of the substrate; the optical waveguide is provided with two branch waveguides (21, 22) branching off from one optical waveguide, and at least one Mach-Zehnder type optical waveguide section (MZ) that forms one optical waveguide by multiplexing the two branch waveguides; and the branch waveguides have even-numbered turn-back parts (A1, A2).

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
• H04B 10/516 - Transmitters - Details of coding or modulation
• 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 in which both signal electrode collapse and signal electrode peeling/damage can be prevented.　This optical waveguide element in which an optical waveguide is formed in a substrate and control electrodes for controlling light waves propagating through the optical waveguide are disposed on the substrate is characterized in that: the control electrodes include a signal electrode, and the signal electrode is provided with a substrate-side narrow portion where the width thereof is narrow and an upper-side wide portion where the width thereof is wide; a prevention film for preventing the signal electrode from collapsing is provided on the substrate and disposed so as to be in contact with the narrow portion of the signal electrode; and at a location on the signal electrode where the narrow portion connects to the wide portion, the surface of the prevention film is formed as a curved surface projecting 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

To provide an optical waveguide element in which damage to a thin plate, particularly damage to an optical waveguide, is prevented.　An optical waveguide element comprising: a thin plate 1 which has an electrooptic effect and has a thickness of 10 µm or less, an optical waveguide 2 being formed in the thin plate; and also a reinforcing substrate for supporting the thin plate, wherein the optical waveguide element is characterized in that the thin plate 1 has a rectangular shape in plan view, a dissimilar-element layer 3 in which an element different from an element constituting the thin plate is positioned in the thin plate is formed on at least a portion between the optical waveguide 2 and the outer periphery of the thin plate, and the total length over which a cleavage plane of the thin plate traverses the region in which the dissimilar-element layer is formed is 5% or more of the width of the thin plate in the short-side direction thereof.

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-treated metal oxide particles according to the present invention are metal oxide particles that are surface treated with a silane coupling agent which has an alkoxy group. The surface-treated metal oxide particles have ultraviolet shielding properties; the loss on drying at 105°C for 3 hours of the surface-treated metal oxide particles is 0.5% by mass or less; a peak associated with the alkoxy group is not detected in the reflectance spectrum of the surface-treated metal oxide particles in the range of from 900 cm-1to 1,300 cm-1 as determined by means of a Fourier transform infrared spectrophotometer; and the value obtained by dividing the dry particle diameter D98 (μm) by the BET equivalent particle diameter (nm), namely (D98)/(BET equivalent particle diameter) is from 0.01 to 5.0.

IPC Classes  ?

• C01G 9/02 - Oxides; Hydroxides
• C09C 1/00 - Treatment of specific inorganic materials other than fibrous fillers ; Preparation of carbon black
• C09C 3/08 - Treatment with low-molecular-weight organic compounds
• C09C 3/12 - Treatment with organosilicon compounds
• A61Q 17/00 - Barrier preparations; Preparations brought into direct contact with the skin for affording protection against external influences, e.g. sunlight, X-rays or other harmful rays, corrosive materials, bacteria or insect stings
• A61Q 17/04 - Topical preparations for affording protection against sunlight or other radiation; Topical sun tanning preparations
• A61K 8/27 - Zinc; Compounds thereof

Abstract

32342Mg-C3ATi-C3AMn-C3AZn-C3AMg-C3A3Ti-C3A23Mn-C3A3Zn-C3A33A).

IPC Classes  ?

• C04B 7/02 - Portland cement

Abstract

22232322222S×(145.7) ≥ 5.700 ...(1)

IPC Classes  ?

• C04B 7/02 - Portland cement

Abstract

A dispersion liquid according to the present invention contains metal oxide particles that are surface-modified with a silane compound and a silicone compound. If the transmission spectrum of metal oxide particles, which are obtained by vacuum drying this dispersion liquid, within the wave number range of from 800 cm-1to 3,800 cm-1is determined by FT-IR, IA/IB ≤ 3.5 is satisfied (wherein IA is the spectral value at 3,500 cm-1and IB is the spectral value at 1,100 cm-1). If this dispersion liquid and a methyl phenyl silicone are mixed so that the mass ratio of the total mass of the metal oxide particles and the surface modification materials to the mass of the methyl phenyl silicone is 30:70, and a hydrophobic solvent is subsequently removed therefrom, the viscosity of the mixture is 9 Pa·s or less.

IPC Classes  ?

• C01G 25/02 - Oxides
• H01L 23/29 - Encapsulation, e.g. encapsulating layers, coatings characterised by the material
• H01L 23/31 - Encapsulation, e.g. encapsulating layers, coatings characterised by the arrangement
• C08K 9/06 - Ingredients treated with organic substances with silicon-containing compounds
• C08L 101/00 - Compositions of unspecified macromolecular compounds
• H01L 33/56 - Materials, e.g. epoxy or silicone resin

Abstract

The present invention improves the workability of adjustment and fixing of an input optical fiber and an output optical fiber arranged on one surface of a housing in an optical function device and thus enhances the production stability and the like of optical coupling efficiency.　Provided is an optical function device comprising an optical function element accommodated in a housing, an input optical fiber for guiding input light into the housing, and an output optical fiber for guiding output light output via the optical function element to the exterior of the housing, wherein the input optical fiber and the output optical fiber are held by a set of shared holding members and are held at one location in the housing via said shared holding members.

IPC Classes  ?

• G02B 6/32 - Optical coupling means having lens focusing means
• G02B 6/30 - Optical coupling means for use between fibre and thin-film device
• 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) which is provided with: a pair of ceramic plates (2, 3) containing a conductive substance; and a conductive layer (4) and an insulating layer (5), which are interposed between the pair of ceramic plates (2, 3). The porosity at the interface between the pair of ceramic plates (2, 3) and the insulating layer (5) is 4% or less; and the ratio of the average primary particle diameter of an insulating substance that constitutes the insulating layer (5) to the average primary particle diameter of an insulating substance that constitutes the ceramic plates (2, 3) is more than 1.

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
• C04B 35/117 - Composites
• 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

A ceramic joined body (1) which is provided with: a pair of ceramic plates (2, 3) containing a conductive substance; a conductive layer (4) and an insulating layer (5), which are interposed between the pair of ceramic plates (2, 3); and a pair of intermediate layers (6, 7) which are interposed between the pair of ceramic plates (2, 3) and the conductive layer (4), while being in contact with the pair of ceramic plates (2, 3) and the conductive layer (4).

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
• C04B 35/117 - Composites
• 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 modulator that prevents breakage of a substrate or damage to a signal electrode when pressing an optical modulation element.　The optical modulator includes an optical modulation element; the optical modulation element is provided with an optical waveguide and a control electrode that controls a lightwave propagating through the optical waveguide on a substrate; the optical modulator has the optical modulation element fixed in a housing. The optical modulator is characterized in that: the thickness of the substrate is less than and equal to 10μm; the control electrode is provided with a signal electrode and a grounding electrode; a protrusion is formed on the top surface of the grounding electrode so as to protrude therefrom; and the top surface of the protrusion is located at a position higher than the position of the top surface of the signal electrode.

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

To provide an optical waveguide element and an optical modulator that can prevent damage to a substrate and a degradation in the characteristics of the substrate that may occur due to stress, by reducing the influence of the stress on the substrate due to a buffer layer, this optical waveguide element 1 is characterized by comprising: a substrate 5 having an electro-optical effect; an optical waveguide 10 formed in the substrate 5; and a buffer layer 9 provided on the substrate 5, wherein a resin 8 that can reduce the influence of the stress on the substrate 5 due to the buffer layer 9 is disposed between the substrate 5 and the buffer layer 9.

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

In order to provide an optical waveguide element and an optical modulator, the optical waveguide element being capable of, by reducing the influence of a buffer layer on stress to a substrate, preventing damage to the substrate and characteristic degradation of the substrate, which may be caused by the stress, an optical waveguide element 1 is characterized by being provided with a substrate 5 having an electro-optic effect, an optical waveguide 10 formed in the substrate 5, an upper surface buffer layer (first buffer layer) 9a provided on the substrate 5, and a lower surface buffer layer (second buffer layer) 9b provided under the substrate 5, the upper surface buffer layer 9a and the lower surface buffer layer 9b comprising approximately the same material and having approximately the same thickness, and the upper surface buffer layer 9a and the lower surface buffer layer 9b being respectively formed so as to be in contact with the upper surface and the lower surface 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
• 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  ?

• 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 6/12 - 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 6/122 - Basic optical elements, e.g. light-guiding paths
• G02B 6/125 - Bends, branchings or intersections

Abstract

The present invention achieves, in an optical modulator provided with an electric circuit element on a relay substrate, a good modulation characteristic by reducing the influence of a leakage microwave generated from the relay substrate.　Provided is an optical modulator (100) equipped with: an optical modulation element (102) which is equipped with a plurality of signal electrodes (112a-112d) configured to generate two modulated light beams that are respectively modulated by two sets of electric signals; a plurality of signal input terminals (124a-124d) to which the electric signals are inputted; a relay substrate (618) on which a plurality of signal conductor patterns (630a-630d) and a plurality of ground conductor patterns (640a-640d) are formed and which is configured to propagate the two sets of electric signals respectively by two pairs of adjacent signal conductor patterns; and a housing (104). At least two signal conductor patterns equipped with at least one component mounting part including an electric circuit element (350a-350d) are configured to have different first signal propagation directions, the first propagation direction being a signal propagation direction in the component mounting part.

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 present invention achieves, in an optical modulator, a good modulation characteristic by reducing the influence of a leakage microwave generated from a relay substrate on which an electric circuit element is provided.　Provided is an optical modulator (100) equipped with: an optical modulation element (102) which is equipped with a plurality of signal electrodes (112a-112d), and generates two modulated light beams that are respectively modulated by two sets of electric signals; a plurality of signal input terminals (124a-124d) to which the electric signals are inputted; a relay substrate (118) on which a plurality of signal conductor patterns (330a-330d) and a plurality of ground conductor patterns (340a-340d) are formed and which is configured to propagate the two sets of electric signals respectively by two pairs of adjacent signal conductor patterns; and a housing (104). At least one signal conductor pattern is equipped with at least one component mounting part (350a-350d) including at least a parallel circuit of a resistor and a capacitor, and the relay substrate has a metallic body (360) connected onto the ground conductor pattern, or a substrate removal part (862), the metallic body being provided at a position at which a portion of the conductor pattern downstream from the component mounting part along the propagation direction of the electric signal is clamped thereby.

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

Provided is an optical modulator in which the influence of leakage microwaves generated from a relay substrate part having an electric circuit element is suppressed to achieve good optical modulation characteristics. The optical modulator is provided with: a relay substrate having signal conductor patterns and ground conductor patterns and connecting signal input terminals and signal electrodes of the optical modulation element; and a housing. The signal conductor patterns have a component mounting portion including an electric circuit element. Two ground conductor patterns sandwiching a signal conductor pattern have a shape as viewed in plan which is, in a component mounting area having a square shape as viewed in plan which is centered at the component mounting portion, formed asymmetrically with respect to a straight line extending in an extending direction of the signal conductor pattern in the component mounting portion. The component mounting area, which is square in shape as viewed in plan, has one side of which the direction corresponds to the extending direction of the signal conductor pattern in the component mounting portion, wherein the length of a side of the square corresponds to the distance from the center of the component mounting portion to a part over an adjacent signal conductor pattern closest to the center.

IPC Classes  ?

• H05K 1/02 - Printed circuits - Details
• 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

This titanium oxide powder has a BET specific surface area of 5 m2/g to 15 m2/g, comprises single crystal titanium oxide particles, contains 99.0 mass% of titanium oxide, and has an anatase crystal phase. Additionally, in a particle size distribution represented by cumulative volume percent of primary particles of the titanium oxide particles, the value (d10) at 10% divided by the value (d50) at 50% (d10/d50) is 0.3 to 1.

IPC Classes  ?

• C01G 23/053 - Producing by wet processes, e.g. hydrolysing titanium salts
• C09C 1/36 - Compounds of titanium
• C09D 17/00 - Pigment pastes, e.g. for mixing in paints
• A61Q 1/12 - Face or body powders, e.g. for grooming, adorning or absorbing
• A61K 8/29 - Titanium; Compounds thereof