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 a first inner surface and a first outer surface. The first inner surface defines a first central bore extending along a length of the optical fiber cable, and the first outer surface defines an outermost surface of the optical fiber cable. A buffer tube is disposed within the first central bore, and the buffer tube has a second inner surface and a second outer surface. The second inner surface defines a second central bore having an inner diameter and extending along the length of the buffer tube. A plurality of optical fibers is disposed within the second central bore of the buffer tube. A first yarn and a second yarn are disposed within the second central bore and are wrapped around the plurality of optical fibers.
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 6/46 - Procédés ou appareils adaptés à l'installation de fibres optiques ou de câbles optiques
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
H01B 7/00 - Conducteurs ou câbles isolés caractérisés par la forme
4.
FLEXIBLE, NON-PREFERENTIAL BEND JACKETS FOR OPTICAL FIBER CABLES
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
6.
LOW MELTING GLASS POWDER USED AS ADDITIVE FOR FLAME RETARDANT COMPOSITION
Embodiments of a flame retardant composition are provided. The flame retardant composition includes 30 wt% to 50 wt% of a polymer component and 50 wt% to 70 wt% of a filler component. The filler component includes a flame retardant powder and a glass powder. A weight ratio of the flame retardant powder to the glass powder is from 1:1 to 11:1. The glass powder is formed from a lead-free phosphate glass having a glass transition temperature of at most 550 °C and a softening point of at most 700 °C. The flame retardant composition can be used to form a component of an optical fiber cable.
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. The inner surface defines a central bore extending along a length of the optical fiber cable, and the outer surface defines an outermost surface of the optical fiber cable. A central strength member is disposed within the central bore. At least one buffer tube, containing a plurality of optical fibers, is disposed within the central bore. At least one filler rod is disposed within the central bore. The at least one buffer tube and the at least one filler rod are stranded around the central strength member. Each of the at least one filler rod includes a strength member and a polymer coating disposed around the strength member. The strength member is a fiber-reinforced plastic rod.
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
10.
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
11.
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.
Provided are embodiments of a lumen. The lumen includes a plurality of optical fibers and a membrane surrounding the plurality of optical fibers. A thickness of the membrane is 50 μm or less. Further, the membrane is made from a polymer composition including a polymer component and a filler component, and the polymer composition includes 30 wt% or less of the filler component. The filler component has a specific surface area of at least 3 m2/g. The lumen may be incorporated into a high fiber density optical fiber cable. Also disclosed are embodiments of a method of forming the lumen and optical fiber cable.
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.
Fiber optic connectors having an outer housing comprising a longitudinal open slot disposed on a first side and a latching trigger disposed on a second side are disclosed. The longitudinal open slot of the outer housing allows easy removal and/or replacement of the outer housing by simplifying the assembly of the connector as well as enabling inspection or service as needed. The outer housing may also include 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.
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 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
28.
OPTICAL CONNECTOR WITH ROTATABLE BOOT AND RELATED METHODS
An optical connector (10) includes a connector sub-assembly (12), an inner housing (40) that receives a rear portion of the connector sub¬ assembly (12), a boot (44) extending from the inner housing (40), and an outer housing (42) coupled to the boot (44). The outer housing (42) and the boot (44) are configured to allow relative rotation about a longitudinal axis of the optical connector (10) but can move together along the longitudinal axis. The boot (44) can be rotated relative to the inner housing (40) between a locked position in which the outer housing (42) is prevented from moving axially and depressing the end portion of a latch arm (26) of the connector sub-assembly (12), and an unlocked position in which the outer housing (42) can move axially to depress the end portion of the latch arm (26).
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.
Embodiments of the disclosure relate to a duct for an optical fiber cable. The duct includes a tubular wall having an inner surface and an outer surface. The inner surface defines a longitudinal bore. A plurality of strength elements is disposed within the tubular wall. The plurality of strength elements is formed from yarns that are not combustible at a temperature below 900 °C. Also disclosed are embodiments of a method of forming such a duct. In the method, a flame retardant polymeric composition is extruded to form the tubular wall, and the plurality of strength elements are embedded in the tubular wall. It is expected that the combination of an optical fiber cable having a flame retardant rating and such a duct will maintain the flame retardant rating when the optical fiber cable is disposed within the longitudinal bore of the duct.
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.
Embodiments of the disclosure relate to a fiber distribution system. The fiber distribution system includes an optical fiber cable with a cable jacket having an inner surface, an outer surface, and an opening extending through the inner surface and the outer surface. Optical fibers are disposed within the central bore, and optical fibers include a first optical fiber that extends from the central bore through the opening of the cable jacket. An optical splitter is disposed outside of the optical fiber cable, and the first optical fiber is optically coupled to a first end of the optical splitter. At least two optical fibers are optically coupled to a second end of the optical splitter. An overmold surrounds the opening of the cable jacket and the optical splitter.
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.
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
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.
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
G02B 6/44 - Structures mécaniques pour assurer la résistance à la traction et la protection externe des fibres, p.ex. câbles de transmission optique
44.
METHOD AND SYSTEM FOR CONTROLLING THE TENSION ON A BUFFER TUBE BY A COMPRESSION CATERPILLAR ON A BUFFERING LINE
Embodiments of the disclosure relate to a method of controlling tension on a buffer tube produced on a buffer tube processing line. In the method, the buffer tube is directed through a compression caterpillar. A speed of and a gap between drive belts of the compression caterpillar are set to achieve a desired tension on the buffer tube. Tension on the buffer tube is measured as the buffer tube passes between the drive belts. It is determined whether the measured tension on the buffer tube is within an acceptable range, and the gap between the drive belts is decreased in increments while the buffer tube passes between the drive belts until the tension is within the acceptable range.
G02B 6/44 - Structures mécaniques pour assurer la résistance à la traction et la protection externe des fibres, p.ex. câbles de transmission optique
D21F 11/04 - Procédés de fabrication de longueurs continues de papier ou de carton, ou de nappe humide pour la production de panneaux de fibres, sur des machines à papier du type Fourdrinier papier ou carton composé de plusieurs couches
45.
OPTICAL FIBER HAVING THIN COATING DIAMETER WITHOUT INCREASED MICROBEND SENSITIVITY
Embodiments of the disclosure relate to an optical fiber. The optical fiber includes a glass core and a glass cladding surrounding the glass core. The glass cladding defines a glass diameter of the optical fiber. A primary coating surrounds the glass cladding, and the primary coating has a first elastic modulus and a first thickness. A secondary coating surrounds the primary coating, and the secondary coating has a second elastic modulus and a second thickness. The second elastic modulus is greater than the first elastic modulus, and the second thickness is as thick or thicker than the first thickness. The optical fiber has an outer surface defining a fiber diameter in a range from 160 microns to 175 microns. The glass diameter of the optical fiber is in a range from 100 microns to 130 microns.
G02B 6/036 - Fibres optiques avec revêtement le noyau ou le revêtement comprenant des couches multiples
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 6/04 - OPTIQUE ÉLÉMENTS, SYSTÈMES OU APPAREILS OPTIQUES - Détails de structure de dispositions comprenant des guides de lumière et d'autres éléments optiques, p.ex. des moyens de couplage formés par des faisceaux de fibres
46.
TEARABLE LUMEN FOR USE IN HIGH FIBER DENSITY OPTICAL FIBER CABLE
Provided are embodiments of a lumen. The lumen includes a plurality of optical fibers and a membrane surrounding the plurality of optical fibers. A thickness of the membrane is 80 microns or less, and a free space within the membrane is 50% or less. Further, the membrane has a tear strength of 10 mN/mm or less as measured according to ASTM D1938 - 19. A plurality of such lumens can be combined together to form a cable core around which a cable jacket is extruded to provide a high fiber density optical fiber cable.
G02B 6/04 - OPTIQUE ÉLÉMENTS, SYSTÈMES OU APPAREILS OPTIQUES - Détails de structure de dispositions comprenant des guides de lumière et d'autres éléments optiques, p.ex. des moyens de couplage formés par des faisceaux de fibres
An expanded beam connector and method of making the same is provided herein. The expanded beam connector includes an array of spliced optical fibers, each spliced optical fiber including a first optical fiber and a second optical fiber spliced to the first optical fiber at a splice position. The second optical fiber defines a fiber length extending between the splice position and the cut position configured as a quarter-pitch length. At the quarter-pitch length, a wave transmission through the second optical fiber causes the wave to collimate at the cut position. The expanded beam connector further includes a connector surrounding at least the splice position of each spliced optical fiber within the array of spliced optical fibers.
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.
Male plug fiber optic connectors and a conversion adapter for mating with a dissimilar connector are disclosed along with cable assemblies using the same, thereby providing backwards compatibility with existing optical networks. The fiber optic connector comprises a ferrule, a connector housing having a female key disposed on the outer surface along with a threaded portion integrally formed on the connector housing, and a nose-piece having a pocket disposed at a front portion. The pocket of the nose-piece is configured for allowing optical mating with a dissimilar connector using the conversion adapter for legacy connectivity while also mating with other devices without using the conversion adapter. In one embodiment, the conversion adapter comprises a retainer that cooperates with the threaded portion of the connector housing for securing the conversion adapter to the male plug fiber optic connector. The fiber optic connectors disclosed advantageously allow for optical mating with dissimilar optical connectors with a quick and easy assembly for rugged applications or other optical communication networks.
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
61.
BURN CHAMBER FOR CONDUCTING A BURN TEST OF A CABLE
A burn chamber (1) for conducting a burn test of a cable (2) includes a housing (10) for housing the cable (2) during cable burn testing, a supporting device (20) for supporting the cable (2), and the supporting device (20) being arranged in the burn chamber (1), a burner (30) being configured to produce a flame which is suitable to ignite the cable (2). The supporting device (20) is arranged in the burn chamber (1), and the burner is arranged in the burn chamber (1) at a distance above a bottom of the burn chamber (1). A surface of an inner wall (11) of the housing (10) is configured to have an emissivity in a range between 0.7 and 1.0.
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. The inner surface defines a central bore extending along a longitudinal axis of the optical fiber cable. The optical fiber cable also includes a plurality of subunits disposed within the central bore. Each subunit includes a plurality of optical fibers. The plurality of optical fibers includes at least one water-blocking optical fiber. The at least one water-blocking optical fiber has an outermost coating layer of a UV-cured resin configured to absorb at least 20 grams of water per gram of the UV-cured resin. The optical fiber cable has a cross-sectional area defined by the outer surface of the cable jacket. The optical fiber cable has a fiber density of at least 4 fibers/mm2 as measured at the cross-sectional area.
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.
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.
G02B 27/10 - Systèmes divisant ou combinant des faisceaux
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
66.
HIGH DENSITY OPTICAL SPLITTER WITH EXTERNAL FANOUT DEVICE
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 27/10 - Systèmes divisant ou combinant des faisceaux
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
67.
CONNECTION INTERFACE FOR FIBER OPTIC CABLE ASSEMBLIES AND METHOD OF MAKING SUCH CABLE ASSEMBLIES
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
69.
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
70.
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.
Multi-core fiber optic ribbons (24), cable assemblies (38), connectors (40, 70, 98, 100), structured cabling systems (84), and methods of making same. Multicore optical fibers (10) are arranged relative to each other so that the core patterns have mirror-image symmetry at both ends of a fiber optic ribbon (24). Connectors (40, 70, 98, 100) are configured so that the end faces (16) of the multicore optical fibers (10) are placed in the connector interface (62) to define a connector core pattern having mirror-image symmetry about an interface axis of symmetry (64). Cabling systems (84) include a multicore fiber optic cable assembly (38) and a plurality of network components (88, 90). One half of the multicore optical fibers (10) in the cable assemblies (38) have a first draw direction, and the other half of the multicore optical fibers (10) have a second draw direction opposite the first draw direction. Network components (88, 90) include port connectors (70) having the connector core pattern.
G02B 6/38 - Moyens de couplage mécaniques ayant des moyens d'assemblage fibre à fibre
G02B 6/44 - Structures mécaniques pour assurer la résistance à la traction et la protection externe des fibres, p.ex. câbles de transmission optique
79.
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.
Embodiments of an optical component are provided. The optical component includes an optical container formed from a polymeric composition and an optical element having at least one optical fiber. The optical element is disposed within the optical container. The polymeric composition includes a polymer component and a first aversive additive dispersed in the polymer component. The first aversive additive includes first inorganic particles having an open structure and a chemical aversive material infused into the first inorganic particles. Also provided are embodiments of an optical container made from a polymer composition containing an aversive additive and a method of forming same.
G02B 6/27 - Moyens de couplage optique avec des moyens de sélection et de réglage de la polarisation
G02B 6/40 - Moyens de couplage mécaniques ayant des moyens d'assemblage de faisceaux de fibres
G02B 6/00 - OPTIQUE ÉLÉMENTS, SYSTÈMES OU APPAREILS OPTIQUES - Détails de structure de dispositions comprenant des guides de lumière et d'autres éléments optiques, p.ex. des moyens de couplage
Embodiments of a low-smoke, zero halogen (LSZH) composition for forming a foamed cable jacket are provided. The LSZH composition includes a polymer component, and an LSZH flame retardant package dispersed in the polymer component. The LSZH composition further includes a chemical foaming agent that is present in an amount up to 5% by weight of the LSZH composition and a melt strength enhancer that is present in an amount up to 1 % by weight of the LSZH composition. Also provided are embodiments of an optical fiber cable having a cable jacket surrounding a cable core.
H01B 7/295 - Protection contre les dommages provoqués par des facteurs extérieurs, p.ex. gaines ou armatures par des températures extrêmes ou par les flammes en utilisant un matériau résistant aux flammes
H01B 3/30 - Isolateurs ou corps isolants caractérisés par le matériau isolant; Emploi de matériaux spécifiés pour leurs propriétés isolantes ou diélectriques composés principalement de substances organiques cires
H01B 7/18 - Protection contre les dommages provoqués par des facteurs extérieurs, p.ex. gaines ou armatures par l'usure, la contrainte mécanique ou la pression
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
The disclosure is directed to a fiber optic cable assembly having a temporary packaging useful for protecting the mating interface of connectors of the cable assembly until mating of the connectors is desired. The cable assemblies and temporary packaging concepts enable quick and easy removal of the protective features of the temporary packaging and allow convenient packaging for cable assemblies along with other benefits. The temporary packaging may comprise a first dust cap and a second dust cap attached to a common part for removing the dust cap when separating the temporary packaging from the fiber optic cable assembly or the protective features may be integrally-formed with the protective packaging. The temporary package may include a container and a portion of the temporary packaging may be removable from the container. A method for installing cable assemblies having temporary packaging is also disclosed.
G02B 6/38 - Moyens de couplage mécaniques ayant des moyens d'assemblage fibre à fibre
B65D 85/04 - Réceptacles, éléments d'emballage ou paquets spécialement adaptés à des objets ou à des matériaux particuliers pour des objets de forme annulaire pour bobines de fil métallique, cordes ou tuyaux souples
G02B 6/44 - Structures mécaniques pour assurer la résistance à la traction et la protection externe des fibres, p.ex. câbles de transmission optique
A cable port seal is provided including an upper and lower elements for cables to pass and be compressed therebetween to provide an 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.
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
100.
OPTICAL FIBER CABLE INCLUDING OPTICAL FIBERS ORGANIZED INTO LUMENS FOR IDENTIFICATION
Embodiments of the disclosure relate to an optical fiber subunit. The optical fiber subunit includes a buffer tube having an interior surface and an exterior surface in which the interior surface defines a channel. The optical fiber subunit also includes a first lumen disposed within the channel. The first lumen includes a first membrane having a thickness of 0.15 mm or less and surrounds a first plurality of optical fibers. A second plurality of optical fibers disposed within the channel and outside the first lumen. Also disclosed are embodiments of an optical fiber cable having one or more lumens disposed within a central bore of a cable jacket and embodiments of a method of manufacturing an optical fiber cable.
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