Fiber optic connectors comprising compact footprints along with cable assemblies and methods for making the same are disclosed. In one embodiment, the optical connector comprises a housing and a ferrule. The housing comprises a longitudinal passageway between a rear end and a front end. The optical connectors disclosed may be tunable for improving optical performance and may include a spring for biasing the ferrule to a forward position as desired.
Assemblies and optical connectors including one or more optical fibers laser-bonded to a substrate, as well as methods for fabricating the same, are disclosed. In one embodiment, an assembly includes a substrate having a surface, an optical element bonded to the surface of the substrate, a bond area between the optical fiber and the surface of the substrate, wherein the bond area includes laser-melted material of the substrate that bonds the optical fiber to the substrate, and a metal buttress structure adjacent to the bond area.
Embodiments of the disclosure relate to an optical fiber cable. The optical fiber cable includes a cable jacket having an inner surface and an outer surface in which the inner surface defines a central bore along a longitudinal axis of the optical fiber cable and the outer surface defines the outermost extent of the cable. The optical fiber cable also includes at least one access feature disposed in the cable jacket between the inner surface and the outer surface. Further included are a first plurality of optical fiber bundles. Each optical fiber bundle includes a second plurality of optical fiber ribbons that has a third plurality of optical fibers arranged in a planar configuration. The optical fiber cable bends uniformly in all directions transverse to the longitudinal axis of the optical fiber cable.
A routing tool for the installation of a fiber optic cable along a cable support includes a cable support frame having a mounting interface, wherein the cable support frame is selectively attachable to and detachable from the cable support, and a dispensing platform configured to have the fiber optic cable arranged thereon and selectively attachable to and detachable from the cable support frame. The dispensing platform is configured to be rotatable relative to the cable support frame about a rotational axis. The rotational axis is configured to be laterally offset from the mounting interface. A method of installing a fiber optic cable using the routing tool includes attaching the cable support frame to the cable support, attaching the dispensing platform to the cable support, and dispensing the fiber optic cable from the routing tool to route the cable along the cable support.
G02B 6/54 - Installation souterraine ou sous l'eau; Installation à travers des tubes, des conduits ou des canalisations en utilisant des moyens mécaniques, p.ex. des dispositifs pour tirer ou pousser
5.
PRECONNECTORIZED OPTICAL DISTRIBUTION CABLE ASSEMBLIES AND CORRESPONDING METHODS OF DEPLOYMENT
The present disclosure relates to a distribution cable assembly that has various features to enable flexible configurations to accommodate various data center configurations.
Embodiments of the disclosure relate to an applicator for an adhesive primer. The applicator includes a tank configured to hold the adhesive primer. The applicator also includes a peristaltic pump, having an inlet and an outlet, and a spray nozzle. A first conduit extends from an interior of the tank to the inlet of the peristaltic pump, and a second conduit extends from an outlet of the peristaltic pump to the spray nozzle. Embodiments of the present disclosure also relate to a method of applying adhesive primer to a road surface using the applicator. In the method, the adhesive primer is pumped from the tank containing the adhesive primer through the peristaltic pump to the spray nozzle. Further, the adhesive primer is sprayed from the spray nozzle onto the road surface while the applicator moves across the road surface.
B05B 13/00 - Machines ou installations pour appliquer des liquides ou d'autres matériaux fluides sur des surfaces d'objets ou de matériaux par pulvérisation, non couverts par les groupes
B05B 13/02 - Moyens pour supporter l'ouvrage; Disposition ou assemblage des têtes de pulvérisation; Adaptation ou disposition des moyens pour entraîner des pièces
7.
ACHROMATIC COUPLERS, ACHROMATIC VARIABLE RATIO COUPLERS, AND METHODS OF MAKING THE SAME
In one embodiment, a coupler includes a glass tube having a refractive index n3 and a passageway, a first optical waveguide and a second optical waveguide positioned within the passageway, each of the first optical waveguide and the second optical waveguide comprising a core surrounded by a cladding. The glass tube further includes a tapered region having a taper length. A coupling region is present between the first optical waveguide and the second optical waveguide within the tapered region. A refractive index of the cladding is less than a refractive index of the core, and a lowest refractive index of the cladding of the first optical waveguide and the second optical waveguide is n2. Additionally, n3 is lower than n2 such that a value of Δ2-3 is 0.07%≤Δ2-3≤0.125, where Δ2-3 equals (n22−n32)/2n22.
G02B 6/293 - Moyens de couplage optique ayant des bus de données, c. à d. plusieurs guides d'ondes interconnectés et assurant un système bidirectionnel par nature en mélangeant et divisant les signaux avec des moyens de sélection de la longueur d'onde
G02B 6/30 - Moyens de couplage optique pour usage entre fibre et dispositif à couche mince
8.
SEALING CORNER BRACKET AND CABINET INCLUDING CORNER BRACKET
A corner bracket may include a structural portion including at least one relatively rigid first material, and a sealing portion including at least one relatively elastic second material. The corner bracket may also include a first receiver including a first retainer portion configured to be coupled to an end of a first frame member, and a first sealing interface configured to provide a substantially fluid-resistant seal between a portion of the end of the first frame member and the first receiver. The corner bracket may also include a second receiver transverse to the first receiver and including a second retainer portion configured to be coupled to an end of a second frame member, and a second sealing interface configured to provide a substantially fluid-resistant seal between a portion of the end of the second frame member and the second receiver. The corner bracket may be incorporated into a cabinet frame.
The present disclosure relates to laser treatment of an optical fiber to secure the optical fiber within a ferrule bore. In particular, the laser treatment modifies the physical structure of the optical fiber to aid in securing the optical fiber within the ferrule bore and to correct core-to-ferrule eccentricity errors.
In general, the present disclosure relates to a cable covering for use on distribution cabinets and the corresponding methods of using and assembling the cable covering onto the distribution cabinets.
Systems and methods are provided for connection of an optical fiber to a substrate. The substrate may comprise waveguide(s), guide pin(s), and a substrate body. The guide pin(s) define a first and second end and comprise a capture feature proximate the second end. The substrate body comprises a receiving feature configured to receive and connect the first end of guide pin(s), and the second end of guide pin(s) extends outwardly from the substrate body. The system also comprises a connector configured to receive the optical fiber and including a receiver portion that has a locking feature and defines a recess configured to receive the guide pin(s). The capture feature is configured to engage with the locking feature. When the capture feature is engaged with the locking feature, the optical fiber is aligned with the optical waveguide(s) and restrained from movement relative to the substrate.
A fiber optic connector assembly includes a connector housing defining locking portion defined, an adapter assembly selectively coupled to the connector housing, the adapter assembly including a conversion housing extending around the connector housing and defining a conversion retention member that is positionable between an engaged position, in which the conversion retention member restricts movement of the connector housing with respect to the adapter assembly in an axial direction, and a disengaged position, in which the connector housing is movable with respect to the adapter assembly in the axial direction, and a release housing positioned between the conversion housing and the connector housing, the release housing defining a release front end positionable at least partially within the conversion housing, and a release face selectively engageable with the conversion retention member and configured to move the conversion retention member from the engaged position to the disengaged position.
Devices such as multiports comprising connection ports with associated securing features and methods for making the same are disclosed. In one embodiment, the device comprises a shell, at least one connection port, at least one securing feature passageway, and at least one securing feature. The at least one connection port is disposed on the multiport with the at least one connection port comprising an optical connector opening extending from an outer surface of the multiport to a cavity of the multiport and defining a connection port passageway. The at least one securing feature is associated with the connection port passageway, and the at least one securing feature is disposed within a portion of the at least one securing feature passageway.
A fiber optic cable assembly includes a fiber optic cable carrying a plurality of optical fibers and a plurality of distribution housings attached to the fiber optic cable at spaced locations along a length of the fiber optic cable. A subset of the plurality of optical fibers carried by the fiber optic cable is terminated at each of the plurality of distribution housings. Each of the plurality of distribution housings includes at least one port interface attached to the respective distribution housing for accessing the subset of optical fibers terminated at the respective distribution housing. The distribution housings are in-line with the cable and have a low-profile for ease of installation. A method of using and making such a fiber optic cable assembly is also disclosed.
A fiber optic cable assembly including a main cable portion having a plurality of subunit cables and tap points at which the subunit cables are separated from the main cable portion. A junction shell is positioned at each tap point. The subunit cable is pivotable to two orientations relative to the main cable portion in the junction shell.
A fiber optic cable includes a core comprising a plurality of cable subunits configured such that an outer group of cable subunits surrounds a central cable subunit. each cable subunit includes one or more optical fibers, a buffer tube surrounding the one or more optical fibers, a strength layer surrounding the buffer tube, and a subunit jacket surrounding the strength layer. A thin film outer sheath surrounds the core, wherein the thin film outer sheath loads the outer group of cable subunits normally to the central cable subunit such that contact between the outer group of cable subunits and the central cable subunit provides coupling therebetween, limiting axial migration of the outer group of cable subunits relative to the central cable subunit.
Optical terminals and fiber optic connectors using optical terminals disposed within a connector housing are disclosed. The optical terminals allow strain-relieving a ferrule assembly to a fiber optic cable using a sleeve for quick and easy assembly of the connector. The connector may also include a boot received into the connector housing. The connector may also have an outer housing with a transverse wall at the rear end for providing a ferrule assembly position assurance when the outer housing is properly attached to the optically mated fiber optic connector. Connectors may use fiber-based or lens-based optical interfaces along with other optional features such as sealing gasket disposed on the ferrule assembly to protect when mated, a sealing membrane disposed on a front opening of the connector housing for inhibiting moisture, dirt, debris or dust from reaching the optical interface prior to optical mating.
Female fiber optic connectors having a weatherproofing collar disposed rearward of a connection port opening that receives a fiber optic plug along with cable assemblies comprising the female fiber optic connector and with methods of making the same. The female fiber optic connectors comprise an actuator such as a rocker latch arm or the like disposed under the weatherproofing collar used for releasing or securing an external fiber optic plug that may be received in the connection port. The weatherproofing collar protects the actuator such as the rocker arm latch and surrounding area from dirt, debris, moisture and the like from ingress into the connector. One or more end caps may be used with the weatherproofing collar. The weatherproofing collar allows for a ruggedized fiber optic connector having a quick connect and release mechanism for the external fiber optic plug connector mated to the female fiber optic connector.
Provided are embodiments of an optical fiber cable. The optical fiber cable includes a cable jacket having an inner surface and an outer surface. The inner surface defines a central cable bore, and the outer surface defines an outermost surface of the optical fiber cable and a cable cross-sectional area (AC). At least one buffer tube is disposed within the central cable bore. Each buffer tube has an interior surface defining a buffer tube cross-sectional area (ATube, ID). A plurality of optical fibers (N) are disposed within the at least one buffer tube. Each optical fiber has a fiber diameter of 160 microns to 200 microns. The plurality of optical fibers have a total fiber area (AF). The buffer tube has a free space (1−AF/ATube, ID) of at least 37%, and the optical fiber cable has a fiber density (N/AC) of at least 3.25 fibers/mm2.
Provided are embodiments of an optical fiber cable. The optical fiber cable includes a cable jacket having an inner surface and an outer surface. The inner surface defines a central cable bore, and the outer surface defines an outermost surface of the optical fiber cable. The optical fiber cable also includes a cable core disposed in the central cable bore. The cable core includes a plurality of multicore optical fibers and a cross-sectional area. The plurality of multicore optical fibers fill at least 50% of the cross-sectional area of the cable core. Each multicore optical fiber of the plurality of multicore optical fibers has an inner glass region having a plurality of core regions surrounded by a common outer cladding. The cable core has a core region density that is at least 40 core regions/mm2.
Methods and systems for joining photonic components. A method includes suspending nano-particles in a medium, wherein the nano-particles include metal nano-particles. The method further includes applying a layer of the nano-particle medium to a first substrate, and exposing the layer of nano-particle medium to a thermal process to remove at least a portion of the medium and expose the nano-particles. A second substrate is placed on the nano-particles in alignment with the first substrate, and a heat is applied to the nano-particles to cause connection of contact points between adjacent nano-particles to cause a secure alignment of the first and second substrates. The heat applied to the layer of nano-particles is less than 300° C.
B32B 3/30 - Produits stratifiés caractérisés essentiellement par le fait qu'une des couches comporte des discontinuités ou des rugosités externes ou internes, ou bien qu'une des couches est de forme générale non plane; Produits stratifiés caractérisés essentiellement par des particularismes de forme caractérisés par une couche comportant des cavités ou des vides internes caractérisés par une couche comportant des retraits ou des saillies, p.ex. des gorges, des nervures
B32B 7/12 - Liaison entre couches utilisant des adhésifs interposés ou des matériaux interposés ayant des propriétés adhésives
B32B 17/06 - Produits stratifiés composés essentiellement d'une feuille de verre ou de fibres de verre, de scorie ou d'une substance similaire comprenant du verre comme seul composant ou comme composant principal d'une couche adjacente à une autre couche d'une substance spécifique
B32B 37/06 - Procédés ou dispositifs pour la stratification, p.ex. par polymérisation ou par liaison à l'aide d'ultrasons caractérisés par le procédé de chauffage
C03C 27/08 - Liaison verre-verre par des procédés autres que la fusion au moyen d'un métal interposé
22.
DETACHABLE CONNECTORS FOR HIGH FIBER COUNT APPLICATIONS
The present disclosure relates to a matched pair detachable connector for high fiber count applications where the configuration of the connector maintains optical fiber alignment and ferrule alignment during assembly of the connector.
An optical connector includes a connector sub-assembly, an inner housing that receives a rear portion of the connector sub-assembly, a boot extending from the inner housing, and an outer housing coupled to the boot. The outer housing and the boot are configured to allow relative rotation about a longitudinal axis of the optical connector but can move together along the longitudinal axis. The boot can be rotated relative to the inner housing between a locked position in which the outer housing is prevented from moving axially and depressing the end portion of a latch arm of the connector sub-assembly, and an unlocked position in which the outer housing can move axially to depress the end portion of the latch arm.
Cable adapters, connector assemblies, and optical cable assemblies incorporating an integral seal are disclosed. According to one aspect, a cable adapter includes a first end, a second end, and a passageway extending between the first end and the second end. The cable adapter further includes a seal groove within a surface of the second end, at least one opening within the seal groove, wherein the at least one opening is fluidly coupled to the passageway, and a seal within the seal groove. The seal includes a sealing material disposed within the seal groove, the at least one opening, and along an interior surface of the passageway.
Systems and methods for dynamic use of remote units in a wireless communications system (WCS) include a digital routing unit (DRU) that sums incoming (uplink) signals from the remote units that have active user equipment, while suppressing signals from the remote units that do not have active user equipment. Similarly, the DRU only sends outgoing (downlink) signals to the remote units that have active user equipment. The selective summing of uplink signals improves the gain at the DRU, which allows optimization of the dynamic range of the DRU. Likewise, by selectively sending streams to the remote units, power consumption at the remote units may be reduced, which may allow for smaller, less expensive remote units to be deployed.
The present disclosure relates to a multi-fiber ferrule having a plurality of bores where each bore has an adjacent divider that separates the bores. The divider also facilitates insertion of an optical fiber into each bore.
In one embodiment, a multicore optical fiber connector adapter includes at least one multicore optical fiber stub that includes a plurality of optical cores, each optical core having an inner core and an outer core, a fiber coupling section having a first diameter, wherein the cores have a first pitch at the fiber coupling section, a multicore fiber coupling section having a second diameter that is less than the first diameter, wherein the cores have a second pitch at the multicore fiber coupling section that is less than the first pitch, and a taper section between the fiber coupling section and the multicore fiber coupling section. The multicore optical fiber connector adapter further includes at least one multicore ferrule comprising a passageway, a multicore connector, a plurality of optical fibers, and a multi-fiber ferrule.
Fiber optic cable assemblies, connectors, and methods of making same. A fiber optic cable assembly includes a plurality of multicore optical fibers and is terminated by connectors that define the ends of the cable assembly. Each connector includes a connector interface having an interface axis of symmetry, and each multicore optical fiber includes a front end face having an end face core pattern and a back end face having an end face core pattern that is a mirror image of the front end face core pattern. Each connector is configured so that the front end face of one multicore optical fiber and the back end face of the other multicore optical fiber are placed in the connector interface to define a connector core pattern having mirror-image symmetry about the interface axis of symmetry. Core polarity is thereby maintained between fiber segments without regard to the direction of the cable assembly.
A fiber optic cable includes an outer jacket, a plurality of optical fibers within the outer jacket, and a pull grip at an end of the fiber optic cable for pulling the cable through a pathway during installation of the cable. The pulling of the fiber optic cable through the pathway causes a tensile load to be imposed on the fiber optic cable. To accommodate the tensile load, the fiber optic cable further includes a load distribution member coupled to the pull grip and to the plurality of optical fibers. The load distribution member distributes the tensile load on the fiber optic cable over the plurality of optical fibers such that the plurality of optical fibers collectively provides the tensile strength to support the tensile load during routing of the fiber optic cable through the pathway. In this way, strength members may be omitted from the design of the cable and more optical fibers may fit within existing pathways. A method of making and a method of using such a fiber optic cable is also disclosed.
Embodiments of the disclosure relate to a polymer composition that includes at least one polymer and an aversive additive dispersed in the at least one polymer. The aversive additive is made of a zeolite material and an aversive material infused within pores of the zeolite material. In embodiments, the aversive additive is incorporated into an optical fiber cable. The optical fiber cable includes at least one optical fiber and a polymeric jacket that surrounds the at least one optical fiber. The polymeric jacket is made of a polymer matrix and the aversive additive is dispersed in the polymer matrix. Embodiments of a method of infusing an aversive material into a zeolite material to form the aversive additive are also disclosed herein.
Systems and methods for compression and decompression between elements of a wireless communications system (WCS) such as a distributed antenna system (DAS) contemplate performing a fast Fourier transform (FFT) operation before compression and transmission across a transport medium in a DAS. Further, a size of an FFT block may be varied based on latency requirements. For example, the FFT block size may be based on a sampling rate extracted from channel information. By selecting the FFT block size to meet latency requirements, overall throughput across the transport medium may be increased.
A method, system, and computer program product for determining a core-to-ferrule offset of a ferrule for a fiber optic connector. A reference ferrule is physically aligned with a core imager by positioning the reference ferrule so that edges of the reference ferrule in a plurality of profile images are aligned with fiducial markers in the images. The reference ferrule is incrementally rotated about its longitudinal center access, a core image captured at each rotational angle, and a reference core-to-ferrule offset determined based on the core images. A test ferrule is physically aligned with the core imager by positioning the test ferrule so that edges of the test ferule are aligned with the edges of the reference ferrule in a plurality of profile images. The core-to-ferrule offset of the test ferrule is then determined based on an offset between the test and reference cores in a composite core image.
G01M 11/00 - Test des appareils optiques; Test des structures ou des ouvrages par des méthodes optiques, non prévu ailleurs
G01B 11/27 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour tester l'alignement des axes pour tester l'alignement des axes
Waveguide substrate connection systems and methods are provided herein. An example waveguide assembly comprises a first substrate having a first waveguide, a second substrate having a second waveguide, an adhesive, and one or more spacers. A height for the one or more spacers is less than 10 μm. The adhesive and the one or more spacers provide a composite material configured to assist in securing the first substrate and the second substrate together to align the first waveguide and the second waveguide. When the first substrate and the second substrate are attached together via the adhesive, the one or more spacers are configured to maintain a desired gap spacing therebetween so as to optimize coupling efficiency between the first waveguide and the second waveguide. The desired gap spacing corresponds to the height for the one or more spacers.
Systems and methods are provided for aligning a substrate with an optical fiber. A system comprises an optical fiber and a substrate with one or more optical waveguides, guide pin(s), and a substrate body comprising a receiving feature configured to receive and connect with the guide pin(s). The system also comprises an adapter having a pair of opposing walls defining a spacing therebetween. The adapter is configured to receive and connect to the substrate body in between the pair of opposing walls. The system also comprises a plug defining a hole(s) that is configured to receive the guide pin(s). The plug is configured to receive and connect the optical fiber. Connection of the adapter and the substrate body and connection of the adapter and the plug restrain movement of the optical fiber relative to the substrate.
A optoelectronic assembly is provided including a photonic integrated circuit (PIC) including at least one electronic connection element and plurality of waveguides disposed on a PIC face, a printed circuit board (PCB) including at least one PCB electronic connection element, which is complementary to the at least one electronic connection element of the PIC and the PIC is configured to be flip chip mounted to the PCB, a lidless fiber array unit including a support substrate having a substantially flat first surface and a signal fiber array including a plurality of optical fibers supported on the first surface, and an alignment substrate disposed on the PIC face and configured to align the plurality of optical fibers of the signal fiber array with the plurality of waveguides.
Lens-based optical connector assemblies and methods of fabricating the same are disclosed. In one embodiment, a lens-based connector assembly includes a glass-based optical substrate includes at least one optical element within the optical substrate, and at least one alignment feature positioned at an edge of the glass-based optical substrate, wherein the at least one alignment feature is located within 0.4 μm of a predetermined position with respect to the at least one optical element along an x-direction and a y-direction. The lens-based connector assembly further includes a connector element including a recess having an interior surface, The interior surface has at least one connector alignment feature. The glass-based optical substrate is disposed within the recess such that the at least one alignment feature of the glass-based optical substrate engages the at least one connector alignment feature.
Disclosed herein is a fiber optic system including at least one fiber optic cable assembly having a multimode optical fiber for communication of an optical data signal at an operating wavelength and a devices having a single-mode fiber stub with a mode field diameter within 20% of the mode field diameter of the fundamental mode of the multimode optical fiber at the operating wavelength. The single-mode fiber stub is secured to a ferrule, and a center of a core of the single-mode fiber stub is within 0.5 μm of a center of the ferrule. An end of the single-mode fiber stub that extends to or beyond the back end of the ferrule and forms an optical connection with the multimode optical fiber where the center of the single-mode fiber stub is within 2 μm of a center of the multimode optical fiber.
A method of terminating an optical fiber having an inner core with a fiber optic connector including a ferrule having a micro-bore and an end face with a mating location is disclosed. The method includes determining a bore bearing angle of a bore offset of the micro-bore in the ferrule; determining a core bearing angle of a core offset of the inner core in the optical fiber; orienting the ferrule and the optical fiber relative to each other to minimize the distance between the inner core and the mating location; heating the ferrule to an processing temperature above room temperature; and coupling the optical fiber to the micro-bore of the ferrule. The size of the micro-bores and optical fibers may be selected to maximize the number of interference fits in a population of ferrules and optical fibers while minimizing failed fittings between the ferrules and optical fibers in the populations.
Optical cable assemblies having filler optical fibers and methods of fabricating the same are disclosed. In one embodiment, an optical cable assembly includes an optical cable, a plurality of filler optical fibers, and a ferrule. The optical cable includes an outer jacket and a plurality of active optical fibers disposed within the outer jacket, wherein the plurality of active optical fibers extend beyond an end of the outer jacket. Each filler optical fiber includes a first end and second end. The first end is secured to an outer surface of the outer jacket by a securing member for improving mechanical performance of the assembly. The ferrule includes an array of openings. Ends of the plurality of active optical fibers are disposed within a first subset of openings of the array of openings and the second ends of the plurality of filler optical fibers are disposed within a second subset of openings of the array of openings and are suitable for transmitting optical signals.
A fiber enclosure includes a closure body, a lid removably coupled to the closure body, and a plurality of clamps coupling the lid to the closure body. The lid includes a lid body, a lid lip extending from the lid body between each of the plurality of clamps, and a plurality of lid ribs connecting the lid lip and the lid body thereby providing a lid reinforcement between each adjacent clamp. The closure body includes an upper body portion, a closure body lip extending from the upper body portion between each of the plurality of clamps, and a plurality of body ribs connecting the closure body lip and the upper body portion, thereby providing a closure body reinforcement between each of the adjacent clamps.
A rollable optical fiber ribbon utilizing low attenuation, bend insensitive fibers and cables incorporating such rollable ribbons are provided. The optical fibers are supported by a ribbon body, and the ribbon body is formed from a flexible material such that the optical fibers are reversibly movable from an unrolled position to a rolled position. The optical fibers have a large mode filed diameter, such as ≥9 microns at 1310 nm facilitating low attenuation splicing/connectorization. The optical fibers are also highly bend insensitive, such as having a macrobend loss of ≤0.5 dB/turn at 1550 nm for a mandrel diameter of 15 mm.
A fiber enclosure includes an upper body portion and a lower body portion coupled to the upper body portion. The upper body portion defines a primary volume. The lower body portion extends from the upper body portion and defines an inlet volume in communication with the primary volume, the lower body portion comprising a port wall comprising a plurality of ports for receiving cables. The port wall is recessed from an outer edge of the upper body portion, such that the plurality of ports is positioned in a separate plane from the upper body portion and recessed from the outer edge of the upper body portion a distance larger than or equal to a bend radius of a cable connected thereto.
An optical splitter module for splitting an input signal from an input optical fiber is provided. The optical splitter module includes the input optical fiber, output optical fibers, and a splitter device configured to split the input signal from the input optical fiber into a plurality of output signals that are each directed into one of the output optical fibers. The optical splitter module also includes a fanout device defining openings that are each configured to receive one of the output optical fibers. The optical splitter module defines an internal volume and an exit cavity. The input optical fiber, the output optical fibers, the splitter device, and the fanout device are each received in the internal volume. The fanout device defines a side length, the exit cavity defines a width, and the side length of the fanout device is greater than the width of the exit cavity.
An optical splitter assembly for splitting an input signal from an input optical fiber is provided. The optical splitter assembly includes an optical splitter module having an input optical fiber, output optical fibers, and a splitter device configured to split the input signal from the input optical fiber into output signals that are each directed into one of the output optical fibers. The optical splitter assembly also includes external fanout devices that are provided outside of the optical splitter module. The optical splitter module defines an internal volume. The input optical fiber, the output optical fibers, and the splitter device are provided in the internal volume. One or more groupings of output optical fibers extend out of the optical splitter module to an external fanout device. Individual output optical fibers extend out of each of the external fanout devices with the individual output optical fibers being separate from each other.
G02B 6/28 - Moyens de couplage optique ayant des bus de données, c. à d. plusieurs guides d'ondes interconnectés et assurant un système bidirectionnel par nature en mélangeant et divisant les signaux
G02B 6/44 - Structures mécaniques pour assurer la résistance à la traction et la protection externe des fibres, p.ex. câbles de transmission optique
45.
MULTIPORTS AND OTHER DEVICES HAVING KEYED CONNECTION PORTS AND SECURING FEATURES AND METHODS OF MAKING THE SAME
Devices such as multiports comprising connection ports with associated securing features and methods for making the same are disclosed. In one embodiment, the device comprises a shell, at least one connection port, at least one securing feature passageway, and at least one securing feature. The at least one connection port is disposed on the multiport with the at least one connection port comprising an optical connector opening extending from an outer surface of the multiport to a cavity of the multiport and defining a connection port passageway. The connection port passageway defines a keying portion. The at least one securing feature is associated with the connection port passageway, and the at least one securing feature is disposed within a portion of the at least one securing feature passageway.
A connection interface for a fiber optic cable carrying a plurality of optical fibers. The connecting interface includes a body having a first face, a second face and a sidewall joining the first face and the second face. The sidewall includes an outer portion that defines a periphery of the body and an inner portion. The body also includes at least one holding bore. The at least one holding bore is configured to receive a first group of optical fibers from the plurality of optical fibers. Additionally, the inner portion is configured to passively receive a second pass-through group of optical fibers from the plurality of optical fibers that extends past the connection interface. A cable assembly including a fiber optic cable and one or more connection interfaces is disclosed, and a method of forming a fiber optic cable assembly with one or more connecting interfaces is also disclosed.
An optical fiber drop cable including a cable jacket having an outer surface defining the outermost surface of the optical fiber drop cable. The optical fiber drop cable also includes a subunit, a first strength element, and a second strength element. The first strength element, the second strength element, and the subunit are embedded in the cable jacket, and the first strength element, the second strength element, and the subunit are arranged substantially parallel to each other on a first plane. The subunit includes a buffer tube having an inner surface and an outer surface, at least one optical fiber, and a plurality of strengthening yarns. The plurality of strengthening yarns are disposed between the inner surface of the buffer tube and the at least one optical fiber, and the outer surface of the buffer tube is at least partially in contact with the cable jacket.
G02B 6/44 - Structures mécaniques pour assurer la résistance à la traction et la protection externe des fibres, p.ex. câbles de transmission optique
G02B 6/52 - Installation souterraine ou sous l'eau; Installation à travers des tubes, des conduits ou des canalisations en utilisant un fluide, p.ex. de l'air
49.
HEAT EXCHANGER AND SMALL CELL RADIO NODE INCORPORATING THE SAME
A heat exchanger includes a roll-bond evaporator having a heatpipe channel network spanning a primary panel area and at least one secondary multiple panel area, and at least one plurality of fins joined to at least one secondary panel area. The primary panel area is configured to receive electronic circuitry, heat transfer fluid is evaporated in heatpipe channels of the primary panel area, the heat transfer fluid is condensed in heatpipe channels in the secondary panel area(s), and heat is dissipated by the fins into an ambient environment. Secondary panel areas may be bent to bound a cavity and/or assume a generally cylindrical shape. The heat exchanger may be incorporated into a small cell radio node for 5G telecommunications.
H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage
F28F 3/06 - Eléments ou leurs ensembles avec moyens pour augmenter la surface de transfert de chaleur, p.ex. avec des ailettes, avec des évidements, avec des ondulations les moyens pouvant être fixés sur l'élément
H04B 1/38 - TRANSMISSION - Détails des systèmes de transmission non caractérisés par le milieu utilisé pour la transmission Émetteurs-récepteurs, c. à d. dispositifs dans lesquels l'émetteur et le récepteur forment un ensemble structural et dans lesquels au moins une partie est utilisée pour des fonctions d'émission et de réception
50.
SYSTEMS AND METHODS FOR SYNCHRONIZING SUBUNITS IN A MULTI-UNIT POWER DISTRIBUTION NETWORK
Systems and methods for synchronizing subunits a multi-unit power distribution network contemplate selectively opening and closing a switch at the power source to disconnect and reconnect the power source to power conductors to send a synchronization signal to one or more remote subunits. Once the remote subunits are synchronized and able to disconnect from the power conductors, leak detection at the power source may be enabled to detect inadvertent loads on the power conductors (e.g., a human touching the power conductors). Further, the remote subunits may power off and on based on the synchronization signal thereby ensuring that an end device may receive power concurrently from multiple remote subunits so as to meet the power requirements of the end device. Enabling the leak detection improves the safety features of the power distribution network and synchronized power delivery to the end device prevents improper shut downs.
H04L 67/1095 - Réplication ou mise en miroir des données, p.ex. l’ordonnancement ou le transport pour la synchronisation des données entre les nœuds du réseau
H02B 1/20 - Schémas de barres omnibus ou d'autres fileries, p.ex. dans des armoires, dans les stations de commutation
H02J 13/00 - Circuits pour pourvoir à l'indication à distance des conditions d'un réseau, p.ex. un enregistrement instantané des conditions d'ouverture ou de fermeture de chaque sectionneur du réseau; Circuits pour pourvoir à la commande à distance des moyens de commutation dans un réseau de distribution d'énergie, p.ex. mise en ou hors circuit de consommateurs de courant par l'utilisation de signaux d'impulsion codés transmis par le réseau
A fiber optic cable assembly having a reduced cross-dimensional width includes a fiber optic cable carrying a plurality of optical fibers and having a furcation formed at an end thereof. The furcation includes a furcation housing and a plurality of furcation tubes extending from the furcation housing. Each of the plurality of furcation tubes is configured to receive a number of the plurality of optical fibers. The furcation further includes at least one connection interface terminating the optical fibers received in each of the plurality of furcation tubes. At least one of the furcation tubes has a diameter substantially equal to a theoretical minimum diameter corresponding to the number and size of the optical fibers received therein, and may be formed from a heat shrink material. A method of making such a fiber optic cable assembly is also disclosed.
An optical fiber carrying structure that includes a jacket and a rip cord is provided. Optical fiber cables are used to transmit data over distance. Generally, large distribution cables that carry a multitude of optical fibers from a hub are sub-divided at network nodes into subunits. To remove a jacket of a subunit, the subunit may be provided with an access feature such as a rip cord. Described herein is a rip cord for use with optical fiber carrying structures.
Fiber optic terminals with wavelength division multiplexing (WDM) and connection ports supporting physical path redundancy for communication networks are disclosed. The fiber optic terminals provide multiple paths for optical communications. The fiber optic terminal comprises a shell that defines a cavity with at least one primary wavelength division multiplexing (PWDM) device and at least one redundant wavelength division multiplexing (RWDM) device disposed within the cavity of the shell.
Bundled cables and methods for preparing bundled cable are disclosed herein. In the method, a plurality of subunits is wound about a central member. The subunits include a subunit jacket made of a first thermoplastic composition and has a first outer surface, and the central member includes a central member jacket made of a second thermoplastic composition and has a second outer surface. A metal element is provided at an interface of the second outer surface and the first outer surface of the subunits. The metal element is heated such that at least one of the first thermoplastic composition or the second thermoplastic composition forms bonds with the other of the first thermoplastic composition or the second thermoplastic composition.
Multi-fiber interface apparatuses providing a double reflection expanded beam arrangement include one or more substrates being configured to mountably receive a photonic integrated circuit (PIC), a fiber array coupling member mounted to a substrate, optical elements associated with the substrate and/or the fiber array coupling member, and one or more additional features. An additional feature according to certain implementations includes one or more passive substrate alignment features for aligning substrates to promote optical coupling between optical fibers and the PIC. In certain implementations configured for interfacing with printed circuit boards (PCBs), an additional feature includes a recess defined in an optically transmissive substrate in which a PIC is mounted, or includes a recess defined in a PCB into which the PIC is mounted. Various embodiments provide relaxed fiber alignment tolerances with simplified fabrication and system integration capabilities.
An optical fiber cable including a central strength member, a first plurality of tight-buffered ribbon stacks, a binder film, and a cable sheath. The central strength member extends along a longitudinal axis of the optical fiber cable. The tight-buffered ribbon stacks are SZ-stranded around the central strength member. An interstitial space is provided between adjacent tight-buffered ribbon stacks. A binder film continuously and contiguously surrounds the first plurality of tight-buffered ribbon stacks along the longitudinal axis. The binder film includes first portions and at least one second portion. Each of the at least one second portion of the binder film extends into one of the interstitial spaces of the first plurality of tight-buffered ribbon stacks. The cable sheath continuously and contiguously surrounds the binder film along the longitudinal axis, and the cable sheath is coupled to the first portions of the binder film.
Embodiments of a polymer composition are provided. The polymer composition incudes at least one polymer and an aversive additive dispersed in the at least one polymer. The aversive additive includes a porous inorganic material having pores and an aversive material contained within the pores of the porous inorganic material. In embodiments, the polymer composition may be incorporated as jacketing into an optical fiber cable. Also disclosed is a method including the step of infusing an aversive material into a porous inorganic material to form an aversive additive. The porous inorganic material includes particles having an average porosity of from 25% to 75% and a median diameter of 100 μm or less.
G02B 6/44 - Structures mécaniques pour assurer la résistance à la traction et la protection externe des fibres, p.ex. câbles de transmission optique
58.
OPTICAL INTERCONNECT SYSTEM FOR AN EQUIPMENT RACK OF A FIBER OPTIC NETWORK AND METHOD OF INSTALLING FIBER OPTIC CABLES IN AN EQUIPMENT RACK USING THE OPTICAL INTERCONNECT SYSTEM
An optical interconnect system for installing fiber optic cables in an equipment rack having an equipment patch panel with a plurality of coupling port locations is disclosed. The optical interconnect system includes a plurality of cable harnesses configured for installation in the equipment rack and at least one installation tray having a plurality of coupling locations. The plurality of coupling locations receives a connector from the plurality of cable harnesses. The plurality of coupling locations on the installation tray has an arrangement that corresponds to the plurality of port locations on the at least one equipment patch panel, thereby allowing a technician to visually realize that a patching error has occurred during the installation. A method of installing fiber optic cables in an equipment rack using the optical interconnect system is also disclosed.
An optical organizer assembly includes a base with a support opening; at least one support positioned under the optical organizer, the at least one support comprising a support positioning element positionable within the support opening such that the support opening complements the support positioning element, and a passage between the at least one optical organizer and the at least one support for positioning of an adhesive element.
An end cap for a telecommunications closure includes an end cap body having a central hub and a plurality of cutouts; a plurality of extensions extending from the central hub, wherein each of the plurality of extensions comprises a plurality of walls; and a plurality of mechanism positioning elements configured to house at least a portion of a compression mechanism, each mechanism positioning element having a base, at least one wall that extends from the base, and a compression mechanism opening, wherein the compression mechanism opening is configured to house at least a portion of the compression mechanism.
Fiber optic ribbons and methods of making a fiber optic ribbon. The fiber optic ribbon includes one or more first multicore optical fibers each having a first core pattern and a first draw direction and a like number of second multicore optical fibers each having a second core pattern that is the same as the first core pattern and a second draw direction that is opposite the first draw direction. The first multicore optical fibers and the second multicore optical fibers are arranged relative to each other so that the first core pattern has a mirror-image symmetry with the second core pattern at both a first end and a second end of the fiber optic ribbon. Core polarity is thereby maintained between fiber segments without regard to the ribbon direction of the fiber optic ribbons in each fiber segment.
A corner bracket may include first and second retainers configured to receive respective ends of first and second frame members, such that the first and second frame members are substantially perpendicular with respect to one another. The first and second retainers may include structural and sealing portions, wherein the structural portion includes a first material and the sealing portion includes a second material, with the first material being relatively more rigid than the second material, and the second material being relatively more elastic than the first material. The corner bracket may also include first and second exterior surfaces at least partially including the second material and first and second door panel interfaces configured to provide a seal between the first and second exterior surfaces and interior surfaces of first and second door panels in a closed position. The corner bracket may be incorporated into a frame for a cabinet.
A locking ring for assembly onto a cable closure includes a locking ring includes at least two ring sections, with each ring section having at least one locking structure; and a lever that couples with the at least two ring sections. The lever includes at least one locking rib disposed therein, and the at least one locking rib is configured to engage and disengage from the at least one locking structure such that the lever moves from a closed position in which proximal ends of each ring section are substantially adjacent to an open position in which proximal ends of each ring section are separate.
An interconnect system is provided that involves pre-installing a connector housing an optical connector in an adapter and a ferrule of the same optical connector on a cable. The ferrule terminates one or more groups of optical fibers, and a ferrule push component is also pre-installed on the same group(s) of optical fibers. The connector housing is configured to receive and retain the ferrule and ferrule push component without being removed from the adapter to simultaneously form the optical connector and install the optical connector in the adapter. Embodiments such an interconnect system involving high fiber-count cables and related installation methods involving many optical connections are disclosed.
An optical communication cable and related method is provided. The cable includes a cable body and a plurality of optical transmission elements surrounded by the cable body. The cable includes a reinforcement layer surrounding the plurality of optical transmission elements and located between the cable body and the plurality of optical transmission elements. The reinforcement layer includes a first portion and a second portion coupled together and extending longitudinally away from each other.
A cable port seal is provided including an upper and lower elements for cables to pass and be compressed therebetween to provide a environmental barrier. The upper or lower elements include a first sealing member having a first face, an opposing second face, and a first sealing edge with a first and second ends, the first sealing edge including first cable cutouts disposed proximate to each of the first and second ends of the first sealing member, a second sealing member having a third face, an opposing fourth face, and a second sealing edge with a first and second ends, the second sealing edge including at least one second cable cutout disposed proximate to each of the first end and the second end of the second sealing member, and at least one third cable cutout disposed between each of the at least one second cable cutouts.
Out-of-order packet processing in a wireless communications system (WCS) is provided. A reordering queue is established for each data session to temporally hold an incoming data packet(s) until an out-of-order data packet(s) is received or discarded. A reordering timer is initiated to define a lifespan of the earliest detected missed data packet in the data session. If the earliest detected missed data packet is received before the reordering timer expires, the received data packet will be forwarded to a core network together with any subsequent in-order data packet(s) in the reordering queue. Otherwise, the missed data packet is discarded, the subsequent in-order data packet(s) in the reordering queue is forwarded to the core network, and the reordering timer may be redefined for a next missed data packet in the data session. Hence, it is possible to process out-of-order data packets for multiple data sessions with reduced processing complexity and latency.
The present disclosure relates to laser treatment of a ferrule to secure an optical fiber within a ferrule bore. In particular, the laser treatment modifies the physical structure of the ferrule to aid in securing the optical fiber within the ferrule bore.
Multi-beam uniform coverage in a coverage cell(s) in a wireless communications system (WCS) is provided. The WCS includes a number of wireless devices that are typically mounted on a fixed structure to provide coverage for user devices. Each wireless device includes one or more antenna arrays. Each antenna array is controlled via a set of codewords to form one or more RF beams to each cover a respective area in a coverage cell. The codewords are predetermined based on fairness and/or leakage constraints such that the RF beams can be formed in desired geometric shapes and steered toward desired directions to provide a unform coverage in the coverage cell. By forming the RF beams based on the codewords predetermined based on fairness and/or leakage constraints, it is possible to ensure an equal RF power signal level inside the coverage cell and/or reduced power leakage outside the coverage cell.
H04B 7/0456 - Sélection de matrices de pré-codage ou de livres de codes, p.ex. utilisant des matrices pour pondérer des antennes
H04B 7/0408 - Systèmes de diversité; Systèmes à plusieurs antennes, c. à d. émission ou réception utilisant plusieurs antennes utilisant plusieurs antennes indépendantes espacées utilisant plusieurs faisceaux, c. à d. diversité de faisceaux
Embodiments of the disclosure relate to an optical fiber ribbon. The optical fiber ribbon includes a plurality of optical fibers. Each optical fiber of the plurality of optical fibers is arranged adjacently to at least one other optical fiber of the plurality of optical fibers. The plurality of optical fibers have a planar configuration with a first side and a second side. The optical fiber ribbon also includes a first set of pointers disposed on the first side, the second side, or both the first side and the second side. The first set of pointers includes a first starter pointer and at least three first identifier pointers. The first starter pointer is configured to identify a start of an identification sequence for the optical fiber ribbon defined by the at least three first identifier pointers.
Embodiments of the disclosure relate to a bundled drop assembly. The bundled drop assembly includes a central member and a first layer of subunits wound around the central member in a bundled configuration. The first layer of subunits has at least one subunit containing at least one first optical fiber, and the first layer of subunits has a first maximum cross-sectional dimension in the bundled configuration. In an unrestrained configuration, the first layer of subunits has a second maximum cross-sectional dimension that is less than twice the first maximum cross-sectional dimension.
Multi-level beam scheduling in a wireless communications circuit, particularly for a wireless communications system (WCS), is disclosed. The WCS includes a central unit(s) and a wireless communications circuit(s) configured to reduce beamforming overhead and improve radio frequency (RF) coverage in a wireless communications cell(s) based on a multi-level beam scheduling scheme. In a non-limiting example, the multi-level beam scheduling scheme includes a first level (L1) scheduler, a second level (L2) scheduler, and a third level (L3) scheduler configured to perform cross-cell beam scheduling, in-cell beam scheduling, and in-beam user equipment (UE) scheduling, respectively. By employing the multi-level beam scheduling scheme in the WCS, it may be possible to reduce processing overhead and improve resource usage, data throughput, and system adaptability of the wireless communications circuit(s), thus helping to optimize capacity and throughput in the wireless communications cell(s).
H04B 7/06 - Systèmes de diversité; Systèmes à plusieurs antennes, c. à d. émission ou réception utilisant plusieurs antennes utilisant plusieurs antennes indépendantes espacées à la station d'émission
H04W 72/044 - Affectation de ressources sans fil sur la base du type de ressources affectées
H04W 16/28 - Structures des cellules utilisant l'orientation du faisceau
H04B 7/0408 - Systèmes de diversité; Systèmes à plusieurs antennes, c. à d. émission ou réception utilisant plusieurs antennes utilisant plusieurs antennes indépendantes espacées utilisant plusieurs faisceaux, c. à d. diversité de faisceaux
H04W 80/02 - Protocoles de couche liaison de données
H04W 76/27 - Transitions entre états de commande de ressources radio [RRC]
A method of terminating an optical fiber having an inner core with a fiber optic connector including a ferrule having a micro-bore and an end face with a mating location is disclosed. The method includes determining a bore bearing angle of a bore offset of the micro-bore in the ferrule; determining a core bearing angle of a core offset of the inner core in the optical fiber; orienting the ferrule and the optical fiber relative to each other to minimize the distance between the inner core and the mating location; heating the ferrule to an processing temperature above room temperature; and coupling the optical fiber to the micro-bore of the ferrule. The size of the micro-bores and optical fibers may be selected to maximize the number of interference fits in a population of ferrules and optical fibers while minimizing failed fittings between the ferrules and optical fibers in the populations.
Selective radiation of radio frequency (RF) reference beams in a wireless communications system (WCS) based on user equipment (UE) locations is disclosed. The WCS may include a radio node that communicates RF communications signals in a coverage area via RF beamforming. Thus, the radio node is required to periodically radiate a number of RF reference beams in different directions of the coverage area to help UEs to identify a best-possible RF beam(s). However, radiating the RF beams in different directions periodically can increase power consumption of the radio node, particularly when the UEs are concentrated at a handful of locations in the coverage area. In this regard, the radio node can be configured to selectively radiate a subset of the RF reference beams based on a determined location(s) of the UE(s) in the coverage area, thus making it possible to reduce computational complexity and power consumption of the radio node.
H04B 7/06 - Systèmes de diversité; Systèmes à plusieurs antennes, c. à d. émission ou réception utilisant plusieurs antennes utilisant plusieurs antennes indépendantes espacées à la station d'émission
H04B 7/08 - Systèmes de diversité; Systèmes à plusieurs antennes, c. à d. émission ou réception utilisant plusieurs antennes utilisant plusieurs antennes indépendantes espacées à la station de réception
75.
SYSTEMS AND METHODS FOR INCREASING AVAILABILITY IN OPTICAL NETWORKS
Network access devices and methods for increasing availability in an optical network. The network access device includes a first common port configured to receive a primary optical beam, a second common port configured to receive a secondary optical beam, a wavelength division multiplexing device, and an optical coupling device. When operating in a normal state, the optical coupling device provides at least a portion of the primary optical beam to the wavelength division multiplexing device. In response to a problem being detected in the primary distribution cable, the optical coupling device provides at least a portion of the secondary optical beam to the wavelength division multiplexing device. Problems in the primary distribution cable may be detected by a sensing device in the network access device based on a loss of signal at the first common port.
Fiber optic connectors and connectorized fiber optic cables include connector housings having locking portions defined on the connector housing that allow the connector housing to be selectively coupled to a corresponding push-button securing member of a multiport assembly. Methods for selectively connecting a fiber optic connector to, and disconnecting the fiber optic connector from the multiport assemblies allow for connector housings to be forcibly and nondestructively removed from the multiport assembly.
Embodiments of the disclosure relate to an optical fiber cable. The optical fiber cable includes a subunit having a first interior surface and a first exterior surface. The first interior surface defines a central bore along a longitudinal axis of the optical fiber cable. At least one optical fiber is disposed within the central bore of the subunit, and a plurality of strengthening yarns is disposed around the subunit. A cable sheath disposed around the plurality of strengthening yarns. The cable sheath has a second interior surface and a second exterior surface. The second exterior surface defines an outermost surface of the optical fiber cable. The cable sheath includes from 55% to 68% by weight of a mineral-based flame retardant additive and from 35% to 45% by weight of a polymer blend. The polymer blend includes a co-polyester or co-polyether and a polyolefin or a polyolefin elastomer.
In one embodiment, a method of preparing a round fiber optic cable includes applying a cable orientation guide to a portion of the fiber optic cable. The fiber optic cable includes a jacket, a first strength member, a second strength member, and an optical fiber. The strength members and the optical fiber are disposed within the jacket along a strength axis. Applying the cable orientation guide rotates the fiber optic cable such that the strength axis is positioned along a preferential axis. The method further includes forming a punched area in the jacket. The method also include removing a portion of the jacket forward of the punched area to provide a flat end face defined by the punched area for attaching the cable to a retention body of a fiber optic connector.
The present disclosure relates to a process by which an optical fiber drop cable is created and routed in a multiple dwelling unit (“MDU”). The optical fiber drop cable is formed with a feeding tool, and the optical fiber drop cable includes a tube having optical fibers enclosed within the tube. The feeding tool creates a slit within the tube through which optical fibers are fed and thereby inserted into the tube along the tube's length. Once the tube exits the feeding tool with the optical fibers enclosed (thereby forming the optical fiber drop cable), the optical fiber drop cable is then routed into an individual dwelling unit of the MDU by a transition assembly including a transition plug and a routing plug that leads an optical fiber from an exterior of the individual dwelling unit to a subscriber termination point in an interior of the individual dwelling unit.
The present disclosure relates to a method of making a lensed connector in which a glass ferrule has holes within the body of the glass ferrule, and the glass ferrule is subsequently processed to form lens structures along the ferrule.
The present disclosure relates to a lensed optical fiber having a lens applied onto an end face of an optical fiber by laser beam processing. The lens having a radius of curvature that is greater than the diameter of the optical fiber. The lens is applied onto the end face of the optical fiber by laser beam processing in which a laser beam is applied onto the end face of the optical fiber to create the lens. The laser beam has a wavelength ranging between 2.65 microns and 2.85 microns.
Coverage cluster-based beamforming in a wireless node in a wireless communications system (WCS) is provided. In a conventional beamforming system, a wireless node (e.g., base station) periodically emits multiple reference beams, each steered toward a predefined direction, to provide a blanket coverage in a coverage area. Contrary to providing the blanket coverage, a wireless node disclosed herein is configured to provide targeted coverage in a coverage area. Specifically, the wireless node is configured to dynamically group multiple coverage points (e.g., user equipment, high user density area, etc.) into multiple coverage clusters. Accordingly, the wireless node can form and steer a respective reference beam toward each of the coverage clusters. By supporting coverage cluster-based beamforming in the wireless node, it is possible to achieve blanket coverage in the coverage area with a lesser number of reference beams, thus helping to reduce computational complexity and signaling overhead in the wireless node.
H04B 7/06 - Systèmes de diversité; Systèmes à plusieurs antennes, c. à d. émission ou réception utilisant plusieurs antennes utilisant plusieurs antennes indépendantes espacées à la station d'émission
Embodiments of an optical fiber cable are provided. The cable includes a cable jacket and at least one buffer tube. Each buffer tube surrounds a plurality of optical fibers. The cable jacket surrounds the at least one buffer tube. Further, a coating of superabsorbent, swellable hot melt is applied to at least one of the following locations: (i) along at least a portion of the length of at least one of the plurality of optical fibers; (ii) along at least a portion of the length of the exterior or interior surface of the at least one buffer tube; or (iii) along at least a portion of the length of the interior surface of the cable jacket. Moreover, the superabsorbent, swellable hot melt is capable of absorbing at least 50 g of water per gram of superabsorbent, swellable hot melt.
Optical distribution systems for data centers or similar networks are disclosed, where one or both ends of a high fiber-count backbone cable branch out once to serve multiple buildings. The optical distribution systems include the backbone cable, an enclosure that receives an end portion of the backbone cable, a plurality of tether cables connected to the backbone cable within a sealed interior of the enclosure and extending from the enclosure, and a plurality of multiport terminals each receiving one of the tether cables and including connection ports for an auxiliary cable that can extend to one of the buildings. Related methods are also disclosed.
Devices such as multiports comprising connection ports with associated securing features and methods for making the same are disclosed. In one embodiment, the device comprises a shell, at least one connection port, and at least one securing feature. The at least one connection port is disposed on the multiport with the at least one connection port comprising an optical connector opening extending from an outer surface of the multiport to a cavity of the multiport and defining a connection port passageway. The at least one securing feature is associated with the connection port passageway, and is biased by a resilient member.
A communication cabinet lift and transport system is provided including a lift and transport assembly having a support bar with at least one attachment bracket configured to be attached to a frame of the communication cabinet and a caster jack disposed near a either end of the support bar. Each caster jack including a bar mount configured to affix the caster jack to the support bar, a caster wheel disposed at an end of the caster jack, and a jack assembly configured to extend and retract the caster wheel relative to the bar mount. The communication cabinet lift and transport system is configured to raise and lower the communication cabinet relative to a surface, and translate the communication cabinet about the surface when the lift and transport system is in a raised position.
Embodiments of a tensile strength limiting system are provided. The tensile strength limiting system is configured to cause breakage of an optical fiber cable at a predetermined tensile loading below a tensile strength of the optical fiber cable. The tensile strength limiting system includes a force limiter configured for attachment to the optical fiber cable strung on an aerial pole and a restriction clip through which the optical fiber cable is configured to be looped. At the predetermined tensile loading, the force limiter is configured to allow the optical fiber cable to pull through the restriction clip; and the restriction clip is configured to force the optical fiber cable to bend below a minimum bend radius of a strength member within the optical fiber cable such that the strength member breaks.
Systems and methods for splitting cells in a network of Internet of Things (IOT) may evaluate a network metric such as receives signal strength indicator (RSSI) for end devices to determine a general network activity level. When the network metric falls below a predetermined threshold, the cell splitting controller may cause the cell to split in such a manner as to offload some portion of the end devices on an adjacent gateway and/or change frequencies to reduce the likelihood of collision. By splitting cells in this fashion, the density of end devices served by a single gateway is reduced, fewer collisions occur statistically, and the user experience may be improved.
Optical devices including an optical splitter and a duplex optical connector are disclosed. In one embodiment, an optical device includes an optical splitter having an input, a network output, and a pass-through output, wherein the optical splitter is configured to split an input signal received at the input into a network optical signal at the network output and a pass-through output signal at the pass-through output. The optical device further includes a duplex connector having an input connection point and a pass-through connection point, an input waveguide optically coupling the input connection point to the input of the optical splitter, and a pass-through waveguide optically coupling the pass-through connection point to the pass-through output of the optical splitter.
The present disclosure relates to a connector assembly and a corresponding method to reverse polarity of the connector. The method enables polarity reversal without bending/twisting optical fibers within the connector assembly.
Disclosed herein are walk behind grinding tools with horizontally aligned guides and grinding drum. One embodiment relates to a grinding tool with a pair of guides on opposing sides of a blade set of a grinding drum, where the pair of guides is configured to limit a grinding depth of the grinding drum. At least a portion of a guide curvature is generally concentric with a mill curvature, and a guide radius is less than a mill radius. Another embodiment relates to a grinding system including a grinding tool with a vacuum shroud hingedly attached to a front of a main body of a grinding housing, and a vacuum including a vacuum tube in fluid communication with the vacuum shroud. Another embodiment relates to a method of forming a grinding tool.
B24B 7/18 - Machines ou dispositifs conçus pour une seule opération particulière pour meuler des revêtements de sol, des murs, des plafonds ou similaires
94.
MULTIPORTS AND OTHER DEVICES HAVING OPTICAL CONNECTION PORTS WITH ROTATING ACTUATORS PIVOTLY MOUNTED AND METHODS OF MAKING THE SAME
Devices such as multiports comprising connection ports with associated rotating actuators that are pivotly mounted to the device for engaging securing members along with methods for making the same. In one embodiment, the device comprises a shell, at least one connection port, and at least one rotating actuator that engages with a complimentary securing member. The at least one connection port is disposed on the multiport with the at least one connection port comprising an optical connector opening extending from an outer surface of the multiport to a cavity of the multiport and defining a connection port passageway. The at least one securing member is associated with the connection port passageway, and turning the rotating actuators allows the release of an optical connector disposed in the connection port.
Disclosed herein is a system and method of measuring for manufacture and deployment of distribution cable assemblies. The measurement includes a distribution cable ruler having at least one similar feature as a distribution cable of a distribution cable assembly. The at least one similar feature comprising at least one of an outer diameter, a bend radius, or a rigidity. The distribution cable ruler includes measurement indicia to facilitate measurement of a distribution length of the distribution cable of the distribution cable assembly. The method includes positioning a distribution cable ruler in a path intended for a distribution cable assembly. The method further includes measuring a distribution cable length of the distribution cable ruler using measurement indicia of the distribution cable ruler.
A wavelength division multiplexing device includes an alignment substrate configured to provide alignment between optical components of the device. The device includes a plurality of collimating lenses, and the alignment substrate includes a plurality of aligners. Each of the aligners is configured to place a respective one of collimating lenses in a predetermined position and a predetermined orientation with respect to the other collimating lenses. The alignment substrate thereby provides passive alignment of the collimating lenses with a designed optical path. The substrate may also include visual alignment markings that provide an indication of the placement of multi-layer thin film filters so that the filters define an actual optical path in alignment with the designed optical path, and integrated optical waveguides that provide an optical beam to each of the collimating lenses.
G02B 6/293 - Moyens de couplage optique ayant des bus de données, c. à d. plusieurs guides d'ondes interconnectés et assurant un système bidirectionnel par nature en mélangeant et divisant les signaux avec des moyens de sélection de la longueur d'onde
G02B 6/32 - Moyens de couplage optique ayant des moyens de focalisation par lentilles
Embodiments of the disclosure relate to an optical fiber cable. The optical fiber cable includes a cable jacket having an interior surface and an exterior surface. The interior surface defines a central bore extending along a longitudinal axis of the optical fiber cable, and the exterior surface defines an outermost surface of the optical fiber cable. At least one subunit is disposed within the central bore. Each of the at least one subunit includes at least one optical fiber disposed within a buffer tube. A plurality of ultrahigh molecular weight polyethylene (UHMWPE) tensile yarns are positioned around the at least one subunit and extend along the longitudinal axis. A layer of a bedding compound is disposed between the plurality of UHMWPE tensile yarns and the cable jacket.
Embodiments of the disclosure relate to an optical fiber cable having at least one optical fiber, a cable jacket and a foam layer. The cable jacket includes an inner surface and an outer surface in which the outer surface is an outermost surface of the optical fiber cable. The inner surface is disposed around the at least one optical fiber. The foam layer is disposed between the at least one optical fiber and the cable jacket. The foam layer is made of an extruded product of at least one thermoplastic elastomer (TPE), a chemical foaming agent, and a crosslinking agent. The foam layer has a closed-cell morphology having pores with an average effective circle diameter of less than 100 µm. Further, the foam layer has a compression modulus of less than 1 MPa when measured at 50% strain.
G02B 6/44 - Structures mécaniques pour assurer la résistance à la traction et la protection externe des fibres, p.ex. câbles de transmission optique
B32B 5/18 - Produits stratifiés caractérisés par l'hétérogénéité ou la structure physique d'une des couches caractérisés par le fait qu'une des couches contient un matériau sous forme de mousse ou essentiellement poreux
G02B 6/38 - Moyens de couplage mécaniques ayant des moyens d'assemblage fibre à fibre
99.
FIBER OPTIC TERMINALS HAVING OPTICAL SPLITTER AND WAVELENGTH DIVISION MULTIPLEXING DEVICES
Field-configurable optical devices and methods are disclosed. In one example, a field-configurable optical device includes a housing defining an enclosure, an input port located at the housing, a pass-through port located at the housing, a plurality of output ports located at the housing, a splitter disposed within the enclosure, a plurality of couplers within the enclosure, each coupler including an input, a first output, and a second output. Each coupler has a power splitting ratio between the first output and the second output that is different from the other couplers. An input port fiber optic jumper assembly within the enclosure. A pass-through port fiber optic jumper assembly is within the enclosure. Moving the input port fiber optic jumper assembly and the pass-through port fiber optic jumper assembly from a first coupler to a second coupler of the plurality of couplers changes the power splitting ratio of the field-configurable optical device.
G02B 6/293 - Moyens de couplage optique ayant des bus de données, c. à d. plusieurs guides d'ondes interconnectés et assurant un système bidirectionnel par nature en mélangeant et divisant les signaux avec des moyens de sélection de la longueur d'onde
100.
INTERMITTENTLY BONDED RIBBON WITH CONTINUOUS LENGTHWISE COATING
Embodiments of the disclosure relate to an optical fiber ribbon. The optical fiber ribbon includes a plurality of optical fibers arranged adjacently to each other. Each optical fiber has a circumferential outer surface. The optical fiber ribbon also includes a lengthwise continuous coating disposed on at least a portion of the circumferential outer surface of each optical fiber. The coating includes a colorant for identifying the optical fiber ribbon among a plurality of optical fiber ribbons. The coating has a first thickness. Further, the optical fiber ribbon includes plurality of bonds intermittently formed between adjacent optical fibers of the plurality of optical fibers. Each of the bonds has a second thickness that is greater than the first thickness. The plurality of bonds provide the only connection between the adjacent optical fibers of the plurality of optical fibers.
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