In embodiments, an expanded beam connector includes a mechanically spliced optical fiber and a support body defining a fiber channel. The mechanically spliced optical fiber includes a first optical fiber, wherein the first optical fiber is a multi-mode fiber having a first end, a second end, and a fiber length extending between the first end and the second end, and a second optical fiber mechanically spliced to the first end of the first optical fiber at a splice connection, the second optical fiber being a single-mode fiber. The splice connection is supported within the fiber channel. The fiber length is an odd multiple of a quarter-pitch length and is greater than 0.1 mm and less than 5.0 mm.
The present disclosure relates to cable guides that are horizontally stackable to provide a pathway to route optical fiber cables. The cable guide has a linking region that allows the cable guide to link with another cable guide to lengthen the cable pathway for optical fiber cables passing therethrough and to increase the degree of turn for the optical fiber cable. As additional cable guides are linked together, the amount of turn that an optical fiber cable can undergo through the cable pathway increases.
The present disclosure relates to a telecommunications connector. The connector includes at least one connector portion including a front housing portion coupled to a rear housing portion. The front housing portion defines a front end and a rear end, the front housing portion including a ferrule terminating a cable fixed to the at least one connector portion, the front housing portion further including a latch that is configured to contact a fiber optic adapter for locking the connector to the fiber optic adapter when the connector is inserted into the fiber optic adapter, wherein the latch is movable about a connection location on the front housing portion. The latch defines a permanently attached rear extension that extends rearward past the rear end of the front housing portion, the rear extension configured to be contacted for moving the latch for freeing the connector from the fiber optic adapter.
An optical shuffle device for mounting in an equipment rack of a fiber optic network. The shuffle device includes a shuffle housing defining a mounting region and a plurality of shuffle modules arranged in the mounting region. Each of the shuffle modules is separate from the other shuffle modules and is slidable between an operative position and an installation position. The shuffle device may include locking mechanisms to secure the shuffle modules in the installation position, and optionally in the operative position. The modularity of the shuffle device and the ability to slide the shuffle modules between these positions allows installers to isolate each of the shuffle modules one at a time and more easily connect fiber optic connectors to connector ports of the shuffle device. A method of using the optical shuffle device is also disclosed.
A loopback test system and method of using the system to test optical connectivity of an equipment rack including an optical shuffle device and at least one server, with each server having server ports. The loopback test system includes a plurality of loopback optical interfaces that are each coupled to a respective network-side optical interface or a respective spare optical interface of the optical shuffle device. Shuffle optical waveguides of the optical shuffle device and loopback optical waveguides of the loopback test system cross-connect each server port in a first subset of the server ports to a respective server port in a second subset of the server ports, with at least one of the cross-connections passing through a spare optical interface and two of the network-side optical interfaces.
H04B 10/073 - Arrangements for monitoring or testing transmission systemsArrangements for fault measurement of transmission systems using an out-of-service signal
Devices, methods, and assemblies are provided that include glass-based photonic bridges. An example glass-based photonic bridge defines a first side and a second side and includes optical waveguide(s) on the first side. One or more micro-holes extend through the glass-based photonic bridge from the first side to the second side and are configured to receive an electrical connection material therein for electrical connection between a first substrate adjacent the first side and a second substrate adjacent the second side.
An optical fiber cable comprises a plurality of buffer tubes, a hollow-core optical fiber disposed within one of the plurality of buffer tubes, and a central strength member. The plurality of buffer tubes are helically stranded about the central strength member, where a diameter d of the central strength member and a lay length l of the plurality of buffer tubes around the central strength member satisfy the following inequality: d≤0.075l−6.875. A cable jacket surrounds the plurality of buffer tubes, where a radius of curvature of the hollow-core optical fiber, when the optical fiber cable is kept straight at a temperature of 20° C., is 200 mm or greater.
A flexible optical fiber ribbon that is configured to mitigate the effects of multipath interference includes a first optical fiber and a second optical fiber. The first and second optical fibers are intermittently joined by a plurality of bonds that include a first bond, a second bond, and a third bond, wherein the first, second, and third bonds are sequential bonds along the lengths of the first and second optical fibers. The first bond and the second bond are separated by a first distance, whereas the second bond and the third bond are separated by a second distance that is different than the first distance.
A reconfigurable intelligent surface (RIS) circuit in a wireless communications system (WCS) is disclosed. The WCS can be a fifth generation (5G), or a sixth generation (6G) wireless system configured to communicate in a radio spectrum highly susceptible to propagation and/or reflection loss caused by obstructors in the propagation path. Herein, the RIS circuit can be configured to absorb an incoming electromagnetic wave and reflect the incoming electromagnetic wave in a desired outgoing direction to help overcome the propagation and/or reflection loss. In an embodiment, elevation angles of the incoming and outgoing electromagnetic waves are restricted, while azimuth angles of the incoming and outgoing electromagnetic waves can be reconfigured by controllers to steer the outgoing electromagnetic wave toward a desired outgoing direction. Hence, it is possible to reduce the number of controllers required for controlling the elevation angles, thus helping to substantially reduce cost and complexity of the RIS circuit.
H04B 7/04 - Diversity systemsMulti-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
11.
CONNECTOR HEADER FOR COUPLING FIBER OPTIC CONNECTOR WITH TRANSCEIVER HOUSING, AND COUPLING METHOD USING THE SAME
A connector header includes a body structure having a plurality of walls defining a lower cavity configured to receive a PCB-mounted transceiver housing, and comprises a forwardly-extending plug receiver having a plug receiver passage configured to receive a fiber optic connector, with alignment features configured to promote alignment between the plug receiver passage and the transceiver housing. The alignment features may include a plurality of ribs protruding into the cavity to contact the transceiver housing. The alignment features may alternatively include openings in an upper wall of the plug receiver configured to permit insertion of at least one removable alignment structure into the cavity between lateral portions of the transceiver housing and a body structure of the connector header, wherein upon alignment the connector header may be affixed to the PCB, and the removable alignment structure(s) may be removed.
Provided are embodiments of a cable assembly. The cable assembly includes a distribution cable with a cable jacket. Optical fibers, including first and second fibers, are disposed within the cable jacket. One or more fiber access windows are formed through the cable jacket. The cable assembly further includes a tether with first and second tether fibers extending from the distribution cable at a branch point. The first optical fiber is cleaved and withdrawn from downstream of the fiber access window and spliced to the first tether fiber. The second optical fiber is cleaved and withdrawn from upstream of the fiber access window and is spliced to the second tether fiber. The first optical fiber provides optical continuity upstream of the first branch point, and the second optical fiber provides optical continuity downstream of the first branch point. The fiber access window, an end of the tether, and the cable jacket are covered by an overmold.
G02B 6/44 - Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
G02B 6/04 - Light guidesStructural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres
G02B 6/10 - Light guidesStructural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
G02B 6/122 - Basic optical elements, e.g. light-guiding paths
G02B 6/46 - Processes or apparatus adapted for installing optical fibres or optical cables
13.
BRIDGE WITH HINGED COVERS TO HOLD AN FAU IN A RECEPTACLE FOR CO-PACKAGED OPTICS
A system is disclosed for securing fiber array units (FAUs) in receptacles using a bridge and a series of hinged covers. The bridge is positioned above and spans across multiple receptacles. Each cover is hingedly coupled to the bridge and, in a closed position, latches to a beam disposed below and in front of the receptacles to apply a downward force that holds a corresponding FAU securely in its receptacle. The covers are individually operable so that a single FAU can be inserted or removed without disturbing neighboring FAUs. A corresponding bridge structure includes a rear wall with cover receiving areas, a front wall with catch elements and recesses for engaging cover prongs, sidewalls, and medial elements configured to support the receptacles while allowing the bridge to float around other frame elements, thereby providing a compact, reworkable FAU retention architecture suitable for high-density optical packaging.
Fiber optic connectors configured as a plug connector that are suitable for mating with a transceiver assembly. The fiber optic connector comprises one or more ferrule assemblies disposed within a connector housing that cooperate with an outer housing of the connector. The connector housing comprises a cutout on a first side configured for cooperating with a transceiver assembly mounted adjacent to the edge of a circuit board and allowing optical mating while inhibiting undue forces on the transceiver assembly. The outer housing may comprise a longitudinal open slot disposed on a first side and a latching trigger disposed on a second side. The longitudinal open slot of the outer housing allows easy removal and/or replacement of the outer housing as well as enabling inspection or service as needed. Connectors may use fiber-based or lens-based optical interfaces along with other optional features such as sealing gasket.
An optical fiber cable includes a cable jacket defining a bore of the cable and a buffer tube that includes at least one optical fiber. The buffer tube has at least one of a non-circular exterior profile or a non-circular interior profile.
G02B 6/44 - Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
G02B 6/04 - Light guidesStructural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres
An exemplary optical fiber cable includes a cable jacket formed of a first polymer composition, and a cable core that includes a plurality of optical fibers. The cable core can have any of various constructions, and the optical fibers can be disposed in various ways such as, but not limited to, loose fibers in buffer tubes (i.e., loose tube construction), planar optical fiber ribbons, or rollable optical fiber ribbons (e.g., intermittently-bonded optical fiber ribbons). To aid in jetting performance, the optical fiber cable further includes a plurality of high-modulus polymeric filaments that are embedded in and coextruded with the cable jacket.
C08J 5/04 - Reinforcing macromolecular compounds with loose or coherent fibrous material
D01F 6/64 - Monocomponent man-made filaments or the like of synthetic polymersManufacture thereof from homopolycondensation products from polyesters from polycarbonates
G02B 6/10 - Light guidesStructural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
An FAU alignment system includes an FAU assembly/connector, an alignment assembly, a receptacle or receptacle assembly, a spring element, and a photonic integrated circuit. The FAU assembly/connector includes an FAU cover, an upper FAU element, a stepped lower FAU element, a microlens array, a prism, and an FAU alignment element with v-grooves for rods or pins. The alignment assembly includes a cover and a base coupled by a hinged engagement. The cover has a front cover portion with a cantilevered cover element, prongs, and cover arms with slots formed by flexible portions, and a rear cover portion with a rear bridge and rear cover arms having inwardly extending protrusions and angled or arc-shaped surfaces. The base supports a receptacle or receptacle assembly having a stop element and a plate element providing engagement and alignment surfaces for the FAU assembly/connector.
An assembly for co-packaged optics includes a receptacle and a cover configured to receive and retain an FAU assembly/connector on a board. The cover has a lower cover portion with arms that engage the receptacle through coupling portions with apertures, and a main cover portion with upper and lower cover surfaces and prongs extending from cover sides. Each prong includes two prong portions separated by a prong slot, and at least one prong portion includes a notch that cooperates with the receptacle for alignment. The receptacle includes a front receptacle body, a rear receptacle body with outwardly extending knobs, a receptacle base, and sidewalls having steps, protrusions, chamfers, recesses, and upwardly extending alignment sections with grooves of different cross-sectional shapes.
G02B 6/30 - Optical coupling means for use between fibre and thin-film device
G02B 6/46 - Processes or apparatus adapted for installing optical fibres or optical cables
G02B 6/12 - Light guidesStructural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
G02B 6/122 - Basic optical elements, e.g. light-guiding paths
G02B 6/42 - Coupling light guides with opto-electronic elements
19.
MODULAR DUST PLUG ASSEMBLIES FOR FIBER OPTIC MULTIPORT TERMINALS
In one embodiment, a dust plug assembly for a fiber optic multiport terminal includes a dust plug having an insertion end and a barb at an end opposite the insertion end. The dust plug assembly further includes a lanyard having a flange with a face and an opening at the face that includes a geometry that corresponding with a geometry of the dust plug. The opening leads to a passageway within the lanyard that is operable to receive and lock the barb of the dust plug.
A furcation housing for forming a furcation in a fiber optic cable carrying a plurality of optical fibers is disclosed. The furcation housing has a modular construction including a plurality of separate furcation housing components releasably connectable to form the furcation housing. At least two of the plurality of furcation housing components connect to each other through a snap fit connection. The furcation housing components include a base, lid, at last one tube insert, and optionally one or more expansion modules that allow the size of the furcation housing to be scaled with the number of optical fibers. A kit for making the modular furcation housing from the furcation housing components, a method of assembling the components to form the furcation housing, and a method of forming a furcation in a fiber optic cable using the modular furcation housing are also disclosed.
Fiber adapting waveguide devices suitable for bridging optical signals to or from a fiber optic connector and an optical device are disclosed. The fiber adapting waveguide device comprises a body having a first portion configured for cooperating with an optical device such as a transceiver assembly or other optical device and a second portion configured for receiving a part of the fiber optic connector, thereby allowing optical communication between the fiber optic connector and the transceiver assembly with the fiber adapting waveguide device disposed therebetween and in optical communication at opposing ends. The fiber adapting waveguide devices comprise an optical bridging pathway for optical signals. The optical bridging pathway may be formed from any suitable component or assembly such as a ferrule fiber stub having a stub fiber, a GRIN lens or be formed as part of the body using an optically transmissive material.
Embodiments of the disclosure relate to an optical fiber bundle. The optical fiber bundle includes a plurality of optical fibers arranged in a close-packed configuration along a length of the optical fiber bundle. A plurality of intermittent bonds is formed along the length of the optical fiber bundle. The plurality of intermittent bonds maintains a relative positioning of the plurality of optical fibers along the length of the optical fiber bundle. Each intermittent bond of the plurality of bonds has a first length, and adjacent intermittent bonds of the plurality of intermittent bonds are separated by a second length. The second length is greater than the first length.
G02B 1/04 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements made of organic materials, e.g. plastics
23.
DUAL LAYER CABLE JACKET FOR OPTICAL FIBER CABLE PROVIDING INCREASED BENDING STIFFNESS AND ACCESSIBILITY
Provided are embodiments of an optical fiber cable. The optical fiber cable includes a cable jacket having an inner surface defining a central bore and an outer surface. A cable core including at least one optical fiber is disposed within the central bore. The cable jacket has an inner layer and an outer layer in which the inner layer extends from the inner surface to an interface between the inner layer and the outer layer and in which the outer layer extends from the outer surface to the interface. The outer layer is formed from a first polymer composition including a first polymer having a first flexural modulus, and the inner layer is formed from a second polymer composition including a second polymer having a second flexural modulus. The second flexural modulus is at least 1.5x greater than the first flexural modulus.
Embodiments of the disclosure relate to an optical fiber cable. The optical fiber cable includes an outer jacket defining a central bore extending along a longitudinal axis of the optical fiber cable. An armor layer is disposed within the first central bore and defines a second central bore extending along the longitudinal axis. A plurality of buffer tubes are disposed within the second central bore. Bedding is disposed between the plurality of buffer tubes and the armor layer. In some embodiments, a binder layer is disposed within the armor layer.
α1A1A α2A2A TRTToptopt opt is an optimization temperature for the first optical component and the second optical component when coupled together, wherein (Formula (4))
A detachable optical connection system includes a fiber array unit (FAU) assembly, a waveguide chip with a waveguide, and a plurality of pins. The FAU assembly is removably coupled couplable to the waveguide chip by via the plurality of pins and the FAU assembly is aligned with the waveguide for optical communication.
In accordance with aspects of the present disclosure, a cable mount for securing a cable to a mounting surface has a body with two ends, a top surface, and a contact surface. At least one cable grip extends away from the top surface and a dispensing port provides an opening through the top surface for dispensing a hot melt adhesive through the body to the contact surface. In accordance with yet other aspects, a cable mount for securing a cable to a mounting surface has a metal body with a top surface and a contact surface, and a hot melt adhesive pre-coated on the contact surface such that, when a power source is used to heat the metal body while the metal body is pressed against a mounting surface, the pre-coated adhesive is melted to form a bond between the cable mount and the mounting surface.
The disclosure relates 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, and the outer surface defines an outermost surface of the optical fiber cable. At least one optical fiber is disposed within the central bore. The cable jacket includes an outer matrix formed from a first polymer composition and a plurality of filaments formed from a second polymer composition embedded in the outer matrix.
Systems are provided that include a housing with a splice tray, one or more connection features, a first compartment comprising a first mounting feature, and a second compartment. At least 0.5 meters of a second cable is stored within the second compartment, and the second cable runs from the splice tray, through the second compartment, and feeds out into one or more pigtail cables that lead to the one or more connection features.
A central strength member with embedded subunit and optical fiber cable incorporating same are disclosed. The central strength member includes an optical fiber and a fiber jacket formed around the optical fiber. A fiber-reinforced plastic (FRP) material is formed around the fiber jacket. The fiber jacket is formed from a first material, and the FRP material includes fiber bound together with a second material. An average peel strength to separate a strip of the second material from a patch of the first material is 1 N/mm or less. The optical fiber cable includes the central strength member and a cable jacket formed around the central strength member.
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. The optical fiber cable also includes a cable core including at least one optical fiber disposed within the central bore of the cable jacket. The cable jacket includes at least one access feature made of a first polymeric material disposed between the interior surface and the exterior surface. The cable jacket is formed from the first polymeric material. In various embodiments, the at least one access feature is foamed.
A method, system, and computer program product for reading labels. In response to an object of the one or more objects being targeted, the object is identified as a targeted object and a select timer it started. Once the select timer has started, it continues to run whether or not the targeted object continues to be targeted. The targeted object is selected if it is being targeted when the select timer elapses. If the targeted object is not being targeted when the select timer elapses, a validate timer may be started and the targeted object selected if is retargeted before the validate timer elapses. If another object is targeted prior to the select timer elapsing, the other object may be identified as the targeted object and the select timer restarted. Objects are targeted by orienting the reader so that an aiming feature in the video feed touches the targeted object.
G06K 7/14 - Methods or arrangements for sensing record carriers by electromagnetic radiation, e.g. optical sensingMethods or arrangements for sensing record carriers by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
33.
RACK MOUNT HOUSING FOR EQUIPMENT RACKS OF A FIBER OPTIC NETWORK AND CORRESPONDING METHODS THEREOF
The present disclosure relates to a rack mountable housing that is a unitary piece configured to attach to a rack and to receive cassettes in guide channels of the rack mountable housing. The rack mountable housing also includes a rear panel with a cable entry area. The cable entry area includes a rear cable entry and a side cable entry. The rear cable entry having a longitudinal axis that is substantially parallel to a central axis of the rack mountable housing, and the side cable entry having a longitudinal axis that is angled relative to the central axis of the housing. The rear cable entry and the side cable entry including a cable guide pathway and a cable guide element, respectively, where both the cable guide pathway and the cable guide element have a tapered profile.
A fiber optic terminal having a perimeter seal includes a base and a cover connected to the base between opened and closed positions. The base and cover define an interior volume having a perimeter in which fiber optic components are disposed. The fiber optic terminal further includes a rigid member extending from one of the base or cover and a flexible rib extending from the other of the base or cover. Each of the rigid member and flexible rib is configured to partially bound the interior volume along a portion of the perimeter. When the cover is in the closed position, the flexible rib engages the rigid member to form a seal around the portion of the perimeter to protect the fiber optic components. A method of manufacturing the fiber optic terminal and a method of using the fiber optic terminal having the perimeter seal are also disclosed.
There is provided a cable attachment system for sealing and retaining a communications cable is provided. The cable attachment system comprises a housing having a first end and a second end. The cable attachment system comprises a sealing member couplable to the second end of the housing. The sealing member comprises at least two cover elements. The sealing member further comprises an elastically deformable sealing material. The at least two cover elements are movable between a first position in which the cover elements are spaced away from each other, and a second position in which the cover elements and the elastically deformable sealing material form a seal between the sealing member and the communications cable. The cable attachment system further comprises a locking member configured to releasably engage with the cover elements to lock the cover elements in the second position.
H02G 3/04 - Protective tubing or conduits, e.g. cable ladders or cable troughs
F16L 3/10 - Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing divided, i.e. with two members engaging the pipe, cable or protective tubing
37.
FERRULES AND FERRULE ASSEMBLIES FOR FIBER OPTIC CONNECTORS HAVING SELF-ALIGNMENT FEATURES
Ferrules and ferrule assemblies for fiber optic connectors are disclosed that having self-alignment features that improve mating when misaligned. The ferrules may comprise one or more lead-in portions having geometry such as a front end with a ball-shaped portion for improving self-alignment and inhibit excess force of binding during optical mating. The ferrules or ferrule assemblies may use fiber-based or lens-based optical interfaces along with other features as desired. Fiber optic connectors may have other self-aligning features that may be used with the ferrules or ferrule assemblies disclosed herein or with conventional ferrules as desired. One or more ferrules or ferrule assemblies may be disposed within an optical housing of the fiber optic connector such as forming a duplex connector.
A tray for use in a fiber-optic apparatus is provided. The tray has a first surface comprising a plurality of regions. Each of the plurality of regions comprises at least one fiber-optic component or mount for retaining a fiber-optic component. Each of the plurality of regions are physically separated from the others of the plurality of regions by one or more dividing barriers. A fiber-optic apparatus comprising the tray for use in a fiber-optic apparatus is also provided.
An optical network includes a plurality of variable ratio coupler (VRC) devices. Each VRC device includes an input, a main output, and a branch output, a VRC, an actuator operable to control the VRC to vary a split ratio of the VRC, a wavelength division multiplex (WDM) filter positioned within the branch output and includes a common port, a transmit port and a reflect port. The WDM filter is operable to pass a control wavelength at the transmit port and a filtered optical signal at the reflect port, and a controller operable to receive an optical control signal from the WDM filter and control the actuator to manipulate the VRC to a desired split ratio. The input, the main output and the branch output of the plurality of VRC devices are coupled such that the plurality of VRC devices is arranged in a branching network having a plurality of levels.
H04Q 11/00 - Selecting arrangements for multiplex systems
G02B 6/293 - Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
H04J 14/02 - Wavelength-division multiplex systems
40.
COHERENT FIBER OPTIC BREAKOUT CABLE ASSEMBLY AND METHOD FOR FABRICATING SAME
A coherent fiber optic bundle breakout cable assembly includes a trunk fiber bundle having a plurality of optical fibers in a close-packed 2D array at a trunk connector end face, and multiple breakout bundles emanating from the trunk fiber bundle and each including a group of optical fibers in a close-packed 2D array at a breakout connector end face, with optical fibers being in lateral contact with one another. Bonding material is arranged in interstitial spaces of optical fibers near ends of each breakout bundle. A method for fabricating such an assembly includes holding the plurality of optical fibers within an elastomeric fixture, dicing the plurality of fibers to provide diced ends thereof, selectively applying and curing bonding material in interstitial spaces between optical fibers proximate to the diced ends according to a bundle-forming pattern, separating groups of optical fibers into breakout bundles, and retaining each breakout bundle in a corresponding breakout bundle ferrule aperture of one or more breakout bundle ferrules.
An optical communication cable is provided. Embodiments of the disclosure relate to an optical fiber cable. The optical fiber cable includes an exterior surface and an interior surface, the interior surface defining a bore extending along a length of the cable jacket. The optical fiber cable further includes a cable core disposed within the central bore. In various embodiments, the exterior surface of the cable jacket includes at least six side surfaces. Also disclosed are embodiments of an optical fiber cable having a cable jacket with an ovality of less than eight percent and embodiments of a method of manufacturing an optical fiber cable.
The present disclosure relates to an optical communications cabinet that provides a greater number of secure housings within the optical communications cabinet. The optical communications cabinet includes a rack section comprising a plurality of housings and a cable manager section that comprises a plurality of cable pathways where each cable pathway leads to a corresponding single housing of the plurality of housings. The optical communications cabinet further includes a jumper manager section that is configured to route cables for optical connectors.
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. The optical fiber cable also includes a cable core including at least one optical fiber disposed within the central bore of the cable jacket. The cable jacket includes at least one access feature made of a first polymeric material disposed between the interior surface and the exterior surface. The first polymeric material has a first tensile strength (TS1). Each of the at least one access feature is surrounded by a second polymeric material of the cable jacket. The second polymeric material has a second tensile strength (TS2). TS1≤(⅔)*TS2.
An optical fiber cable includes a hollow-core optical fiber. The cable is configured to have a low excess fiber length (EFL) of the hollow-core fiber. The cable is further configured to maintain a high minimum bending radius of the hollow-core fiber to prevent permanent damage to the hollow-core fiber during installation and operation of the cable.
An optical fiber cable includes a cable jacket, a strength member embedded in the jacket, a thin-film subunit (TSU), and a first water-blocking element. The first water-blocking element is disposed in a first interior region defined by the cable jacket between an interior surface of the cable jacket and the TSU, such that the TSU does not tack to the cable jacket during extrusion of the cable jacket. The cable can further include one or more strength elements disposed in the first interior region. The TSU has an optical fiber ribbon disposed therein. The TSU can further include a ripcord and/or second water-blocking elements disposed therein.
The present disclosure relates to laser processing an optical fiber to shape an end face of the optical fiber where the optical fiber is inserted into an optical connector. The optical connector comprising a ferrule having a fiber guide element that includes a guide section and a neck section. The end face is shaped to be rounded such that a core of the optical fiber extends into the neck section of the ferrule of the connector.
Embodiments of the disclosure relate to an installation. The installation includes pavement having a top surface and a trench formed in the pavement. The trench has a first region having a first width, and a second region having a second width that is less than the first width. The first region is closer to the top surface than the second region. An optical fiber cable is disposed in the second region of the trench. A gasket is disposed in the first region of the trench and covers the optical fiber cable. Further, the first region of the trench has first sidewalls and a first floor, and the gasket is disposed between the first sidewalls and abutted against the first floor.
Extender ports comprising one or more connection ports having associated securing features for engaging external fiber optic connectors along with methods for making the same are disclosed. In one embodiment, the shell defines a cavity and comprises a barrel and at least one endcap having an opening that is configured to receive an external fiber optic connector. The extender port comprises a shell defining a cavity and having a barrel, a first endcap and a second endcap with respective openings on the endcaps configured to receive respective external fiber optic connectors for optical connection. Extender ports may have the first and second connection ports aligned for making an optical connection between external fiber optic connectors inserted into respective connection ports. Securing features are associated with the respective connection port passageways and are suitable for retaining and releasing the external fiber optic connectors from devices.
A rack mount assembly for an equipment rack of a fiber optic network is disclosed. The equipment rack includes a front side with a first vertical frame member opposing a second vertical frame member. The rack mount assembly includes at least one rail member configured to be coupled to the equipment rack and an adapter module configured to be movably supported from the equipment rack by the at least one rail member. The adapter module includes at least one clip configured to releasably coupled the adapter module to the at least one rail member. The adapter module further includes an adapter bank is configured to receive a plurality of adapters where optical connections are made between optical fibers of fiber optic cables. The adapter module is pivotable relative to the equipment rack such that the adapter module is movable between a lowered position and a raised position.
Passive reflectors for wireless communication networks and methods of their fabrication are disclosed. In one embodiment, a passive reflector for reflecting a RF beam, the passive reflector includes a dielectric substrate. The passive reflector also includes a reflector includes an array of unit cells, where the reflector array is provided on a surface of the dielectric substrate, each unit cell includes a first conductive loop and a second conductive loop that is orthogonal to the first conductive loop, and each unit cell provides a phased distribution for two different polarizations.
H01Q 15/22 - Reflecting surfacesEquivalent structures functioning also as polarisation filter
H01Q 19/10 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
An optical communication cable is provided. Embodiments of the disclosure relate to an optical fiber cable. The optical fiber cable includes an exterior surface and an interior surface, the interior surface defining a bore extending along a length of the cable jacket. The optical fiber cable further includes an armor layer and a cable core disposed within the central bore. In various embodiments, a support layer is positioned between the interior surface of the cable jacket and the armor layer. Also disclosed are embodiments of an optical fiber cable having one or more binding components embedded in the cable jacket.
Co-packaged optics assemblies for are disclosed. The assemblies include a connector assembly configured to provide a high-density interface, and a receptor assembly coupled to the connector assembly. The disclosed concepts provide improved angular and lateral alignment through the arrangement of pins, latches, snaps and other alignment features. Additional aspects of the co-packaged optics assemblies disclosed herein include enhanced coarse alignment and sealing of the optical path to protect from environmental contaminants. These co-packaged optics assemblies enable low-loss, scalable, and reliable coupling between photonic integrated circuits (PICs) and fiber arrays, facilitating next-generation co-packaged optics systems.
G02B 6/42 - Coupling light guides with opto-electronic elements
H01L 23/538 - Arrangements for conducting electric current within the device in operation from one component to another the interconnection structure between a plurality of semiconductor chips being formed on, or in, insulating substrates
H01R 12/71 - Coupling devices for rigid printing circuits or like structures
H01R 13/66 - Structural association with built-in electrical component
A fiber optic coupler includes a coupler housing, an inner housing for releasably receiving a fiber optic connector, a release sleeve, and a retainer. The release sleeve is mounted to the inner housing within the coupler housing and is translatable within the coupler housing between a first position and a second position. The retainer is moveably mounted to the inner housing and engaged with the release sleeve, wherein movement of the release sleeve from the first position to the second position causes the retainer to move radially relative to the inner housing from a locking position to an unlocking position to release the fiber optic connector.
Provided are embodiments of a membrane of an optical fiber subunit. The optical fiber subunit includes a first section formed of a first polymer composition and at least one second section formed of a second polymer composition. The first polymer composition includes a first thermoplastic polymer. The second polymer composition includes a blend of the first thermoplastic polymer and a second thermoplastic polymer that is immiscible with the first thermoplastic polymer. The at least one second section and the first section define an outer perimeter of an outer surface of the membrane. The at least one second section extends from 5% to 85% around the perimeter.
G02B 6/04 - Light guidesStructural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres
Hybrid fiber optic connectors configured as plugs or receptacles for supporting optical and electrical connections are disclosed. The hybrid fiber optic connectors are easy to terminate and may include a housing capable of receiving one or more optical interfaces along with one or more electrical terminal(s). Hybrid fiber optic connectors may include one or more ferrule assemblies disposed within an optical housing when terminated and assembled. The optical housing may protect the ferrule assemblies that are termianted to a fiber optic cable using a sleeve for quick and easy assembly. The hybrid fiber optic connector may also include a boot received into the hybrid connector body for positioning and securing the optical terminal within the hybrid fiber optic connector. Hybrid fiber optic connectors may use fiber-based or lens-based optical interfaces along with other optional features such as sealing gasket disposed on the ferrule assembly as desired.
Hybrid fiber optic connectors configured as plugs or receptacles such being a portion of a camera or sensor for supporting optical and electrical connections are disclosed. The hybrid fiber optic connectors are easy to terminate and may include a housing capable of receiving one or more optical interfaces along with one or more electrical terminal(s). Hybrid fiber optic connectors may include one or more ferrule assemblies disposed within an optical housing when terminated and assembled. The optical housing may protect the ferrule assemblies that are terminated to a fiber optic cable using a sleeve for quick and easy assembly. The hybrid fiber optic connector may also include a boot received into the hybrid connector body for positioning and securing the optical terminal within the hybrid fiber optic connector. Hybrid fiber optic connectors may use fiber-based or lens-based optical interfaces along with other optional features such as sealing gasket disposed on the ferrule assembly as desired.
Disclosed herein are preconnectorized cable assemblies and methods of making using a pull string. One embodiment of the disclosure relates to a method of manufacturing a distribution cable assembly using a pull string fed through a jacket of a distribution cable. Subunit cables are attached to the pull string through openings in the jacket of the distribution cable, and then pulled, via the pull string, through the jacket until drawn through a distribution end opening of the jacket. Another embodiment relates to a distribution cable assembly including junction shells covering side openings in the jacket. The junction shell includes a first half shell attached to a second half shell by a fastener. The first half shell includes stops proximate ends of a side opening to fix the junction shell along an axis of the jacket.
Provided are embodiments of an extruded membrane material. The extruded membrane material includes a first thermoplastic polymer and a second thermoplastic polymer. The first thermoplastic polymer and the second thermoplastic polymer are immiscible. The first thermoplastic polymer forms a first phase oriented along an extrusion direction, and the second thermoplastic polymer forms a second phase oriented along the extrusion direction. The first phase is co-continuous with the second phase. Further, the extruded membrane material has a tensile yield strength of at least 10 MPa along the extrusion direction and a peel strength of 4 N or less transverse to the extrusion direction.
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 - Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
G02B 6/04 - Light guidesStructural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres
60.
RIBBON WITH NON-OVERLAPPING INTERMITTENT BONDS BETWEEN OPTICAL FIBER SUBUNITS
Embodiments of the disclosure relate to an optical fiber ribbon. The optical fiber ribbon includes a plurality of subunits each having a subunit coating surrounding at least one optical fiber. The subunit coating is made of a first material. The optical fiber ribbon also includes a plurality of bonds intermittently formed between adjacent subunits of the plurality of subunits. The plurality of bonds are made of a second material. Each bond of the plurality of bonds has a unique longitudinal position along a length of the optical fiber ribbon such that no other bond of the plurality of bonds is located at the unique longitudinal position. Further, each bond of the plurality of bonds includes a diffusion zone comprising a mixture of the first material and the second material.
Embodiments of the disclosure relate to a subunit. The subunit includes a plurality of optical fibers and a resin matrix surrounding the plurality of optical fibers and at least partially filling interstitial spaces between the plurality of optical fibers. Each optical fiber of the plurality of optical fibers has a first bending stiffness, and the plurality of optical fibers has a cumulative bending stiffness that is equal to the number of optical fibers multiplied by the first bending stiffness. The subunit has a second bending stiffness that is at least twice the cumulative bending stiffness. Also disclosed are embodiments of an optical fiber cable including a plurality of such subunits.
G02B 6/04 - Light guidesStructural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres
G02B 6/44 - Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
G02B 6/06 - Light guidesStructural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres the relative position of the fibres being the same at both ends, e.g. for transporting images
63.
DUST CAP HAVING CONTROLLED DEFORMATION FOR OPTICAL FIBER CONNECTORS
The present disclosure relates to a dust cap that is coupled to a fiber optic connector via an interference fit between the dust cap and a connector housing of the fiber optic connector. The dust cap has a first wall section having a first thickness and a second wall section having a second thickness greater than the first thickness such that when the dust cap is coupled to the connector housing via an interference fit, the first wall section deforms and thereby provides a seal of the fiber optic connector. The dust cap may also include a lensing element.
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 length of the optical fiber cable, and the outer surface defines an outermost surface of the optical fiber cable. A cable core is disposed within the central bore, and the cable core includes at least one optical fiber. An armor layer surrounds the cable core and is disposed in the central bore. A functionalized additive is disposed between the armor layer and the outer surface of the optical fiber cable, and the functionalized additive is a compound with a polar functional group and a nonpolar functional group. The functionalized additive couples the armor layer to the cable jacket.
In general, the present disclosure relates to a telecommunications rack mover that enables safe lifting and transport of telecommunications racks. The telecommunications rack mover is movable such that the telecommunications rack mover can be positioned within the telecommunications rack. In particular, the telecommunications rack mover is expandable such that the telecommunications rack mover engages with and lifts the telecommunications rack off the floor. In this configuration, the telecommunications rack is movable while in engagement with the telecommunications rack mover. Once moved to the desired location, the telecommunications rack mover lowers the telecommunications rack and disengages with the telecommunications rack. Then, the telecommunications rack mover is compressed and removed from below the telecommunications rack.
B62B 3/02 - Hand carts having more than one axis carrying transport wheelsSteering devices thereforEquipment therefor involving parts being adjustable, collapsible, attachable, detachable, or convertible
66.
OPTICAL CONNECTOR WITH ROTATABLE BOOT AND RELATED METHODS
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.
A connector for use in a cable assembly is provided, specifically for cable assemblies including one or more hollow-core optical fibers. The connector includes a ferrule with bore(s) that receive the hollow-core optical fiber(s) and an end plate connected to end faces of the hollow-core optical fibers. The end plate is optically transparent for transmitting optical signals or light energy to and from the hollow-core optical fibers, and the end plate blocks and seals the hollow-core optical fibers at openings in the end faces to stop ingress of debris or other contaminants that can degrade or attenuate signal transmission through the interior of the fibers. Thus, cable assemblies using one or more hollow-core optical fibers are available and sufficiently robust and durable for use in further types of optical fiber systems.
A hollow-core optical fiber for a fiber optic network is disclosed. The hollow-core optical fiber includes opposing end portions. A main portion extends between end portions. A tapered region is between an end portion and the main portion. One end portion has a reduced outer dimension. A cladding defines an inner surface of the main portion. The inner surface defines a hollow core. The cladding includes a doped layer. At least one end portion and tapered region has a solid core. The main portion has an outer diameter greater than 126 μm and one end portion has an outer diameter of 126 μm or less. A fiber optic cable assembly includes a hollow-core optical fiber, and optionally one or more single mode fibers (SMF) and/or multimode fibers (MMF), terminated by a fiber optic connector. A method of making such a hollow-core optical fiber and cable assembly is also disclosed.
G02B 6/38 - Mechanical coupling means having fibre to fibre mating means
G02B 6/44 - Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
69.
FIBER OPTIC CONNECTOR FOR TERMINATING AND SEALING A HOLLOW-CORE OPTICAL FIBER, A FIBER OPTIC CABLE ASSEMBLY HAVING SUCH A CONNECTOR, AND A METHOD OF MAKING SAME
A fiber optic connector for terminating a hollow-core optical fiber is disclosed. The fiber optic connector includes a ferrule having a proximal end, a distal end, and at least one fiber bore extending therebetween for receiving the hollow-core optical fiber. The fiber optic connector further includes a terminus having a terminus body with a proximal end, a distal end, and a passageway therebetween, and a lens received in the passageway. The passageway is configured to receive the ferrule therein so that a terminal end of the hollow-core optical fiber is positioned between the proximal and distal ends of the terminus body. The lens is configured to be located distally of the ferrule when the ferrule is received in the passageway. A fiber optic cable assembly having such a fiber optic connector and a method of terminating a hollow-core optical fiber with such a fiber optic connector are also disclosed.
An installation includes pavement having a top surface and a trench formed in the pavement. The trench includes a first region having a first width and a second region having a second width that is less than the first width. The first region is closer to the top surface than the second region. An optical fiber cable is disposed in the second region of the trench. A tape is disposed in the first region of the trench and covers the optical fiber cable. The tape has an upper surface and edges along a length thereof. A sealant is applied along the length of the tape, and the sealant covers the edges of the tape and at least a portion of the upper surface of the tape. The top surface of the pavement defines a plane, and the upper surface of the tape is recessed from the plane.
G02B 6/50 - Underground or underwater installationInstallation through tubing, conduits or ducts
71.
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.
A cable assembly in which a distribution cable contains a plurality of optical elements and has an opening formed in the distribution cable. A branch cable has a bore extending along a length thereof. At least one optical element of the plurality of optical elements extends from the distribution cable through the opening and into the bore of branch cable. A thermoplastic overmold is formed around the opening of the distribution cable, an end of the branch cable, and at least a portion of the at least one optical element. The thermoplastic overmold provides a strong connection to the distribution cable and the branch relative to a size of the overmold.
A system and method for coupling hollow-core optical fibers. The system operatively couples one hollow-core optical fiber to another hollow-core optical fiber using a length of tube fiber. The end face of each hollow-core optical fiber is operatively coupled to a respective end face of the tube fiber, e.g., by fusion splicing or another suitable means of connecting optical fibers. In operation, light propagating through one of the hollow-core optical fibers is transmitted into an end face of the tube fiber, propagates through the tube fiber, and is emitted from the other end face of the tube fiber and into the other hollow-core optical fiber.
A method and system for laser cleaving an optical fiber. The method includes applying a non-diffracting beam to the optical fiber to create a plurality of perforations therein by pulsing and scanning the non-diffracting beam across the optical fiber. The perforations form a perforation plane in the optical fiber across which the optical fiber is separated to form a cleaved fiber end face. The system includes a laser, an optical assembly that receives a laser beam from the laser and outputs the non-diffracting beam, and one or more translation stages configured to scan the non-diffracting beam across the optical fiber such that the plurality of perforations are created in the optical fiber to define the perforation plane. Penetration depth of the non-diffracting beam is controlled by adjusting one or more parameters of the non-diffracting beam to avoid damage to the core region of the optical fiber.
An optical fiber cable is provided. The optical fiber cable includes a cable jacket having an inner surface and an outer surface. The inner surface defines a central bore, and the outer surface defines an outermost surface of the optical fiber cable. At least one subunit is disposed within the central bore, and each of the at least one subunit includes a subunit jacket surrounding a plurality of optical fibers. At least one optical fiber of the plurality of optical fibers in each of the at least one subunit includes bands of water-blocking material that are intermittently spaced along a length of the at least one optical fiber. The water-blocking material is configured to absorb at least 20 grams of water per gram of water-blocking material.
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 cable comprises at least one hollow-core fiber having a tight buffer formed around the hollow-core fiber. The tight buffer has a multi-layer construction whereby an inner layer is tightly formed around an outer surface of the hollow-core fiber and an outer layer is tightly formed around the inner layer. The inner layer is formed of a soft material having a low elastic modulus, whereas the outer layer is formed of a material having a higher elastic modulus than the inner layer.
An assembly of a hollow-core optical fiber and a micro-optic glass plate enables connections of hollow-core optical fibers to many different types of fiber optics devices (and fibers). The micro-optic glass plate is connected by fusion bonding to the end face of the hollow-core optical fiber, and the micro-optic glass plate covers and seals the fiber from ingress of contaminants that can degrade performance. The micro-optic glass plate can take one of various forms and is at least partially optically transparent to transmit and/or control light energy moving to or from the hollow-core optical fiber. The hollow-core optical fiber is laterally and rotationally aligned on the micro-optic glass plate to help mode match and minimize any coupling and return losses of light energy transferred through the assembly. A method of preparing such an assembly and optical connector systems using the assembly are also provided.
A hollow core fiber array unit includes hollow core fibers each having a terminal end and an adapter that includes grooves. Each groove receives the terminal end of one of the hollow core fibers. The terminal end of the hollow core fibers is spaced from an end face of the adapter. The hollow core fiber array unit includes a spot size converter coupled to the end face of the adapter. The spot size converter includes a plurality of waveguides that correspond to the hollow core fibers. Each waveguide extends from an input at an input end of the spot size converter that is coupled to the end face of the adapter to an output at an opposite output end of the spot size converter. The input of each waveguide includes a first mode field diameter that corresponds to the hollow core fibers and the output includes a second mode field diameter.
A hollow-core optical fiber for carrying an optical signal is disclosed. The hollow-core optical fiber includes a hollow core fiber body having at least a terminated end that defines an end face and a flexible membrane having an inner end face, an outer end face, and a thickness (t) coupled to the hollow-core fiber body. The inner end face of the flexible membrane is coupled to the end face of the hollow core fiber body to seal the hollow core optical fiber at the first end face. The first flexible membrane has a thickness (t) less than about 5 μm. A fiber optic cable assembly having a such a hollow-core optical fiber connected to a ferrule of a fiber optic connector and a method of making such a hollow core optical fiber and fiber optic cable assembly are also disclosed.
An optical fiber cable includes a hollow-core optical fiber. The cable is configured to have a low excess fiber length (EFL) of the hollow-core fiber. The cable is further configured to maintain a high minimum bending radius of the hollow-core fiber to prevent permanent damage to the hollow-core fiber during installation and operation of the cable.
An optical fiber cable includes a hollow-core optical fiber. The cable is configured to have a low excess fiber length (EFL) of the hollow-core fiber. The cable is further configured to maintain a high minimum bending radius of the hollow-core fiber to prevent permanent damage to the hollow-core fiber during installation and operation of the cable.
A method and system for coupling hollow-core optical fibers. The fiber optic coupling system includes one or more fiber optic connectors, and each of the fiber optic connectors includes a ferrule, a hollow-core optical fiber, and one or more seals. Each ferrule includes an end face, an outer surface that defines a center axis of the ferrule, and a bore with an opening on the end face. Each hollow-core optical fiber is positioned in the bore of a respective ferrule, and each of the one or more seals are operatively coupled to the ferrule and configured to form a sealing interface that isolates the opening of the bore from an external environment when the fiber optic connector is operatively coupled to another component of the system.
Embodiments of a halogenated composition for forming a foamed cable jacket are provided. The halogenated composition includes a polymer component, and a flame retardant package dispersed in the polymer component and a chemical foaming agent that is present in an amount less than 5% by weight of the halogenated composition. Also provided are embodiments of an optical fiber cable having a cable jacket surrounding a cable core. The cable jacket is made from the halogenated composition, which has a first density. The cable jacket has a foamed region with a second density that is 70% to 95% of the first density.
An optical fiber ribbon includes a plurality of optical fibers that includes at least one hollow core fiber. The ribbon further includes a first matrix layer that encapsulates the plurality of optical fibers and maintains the fibers in a planar arrangement. The ribbon further comprises a second matrix layer. The first matrix layer has a first elastic modulus and the second matrix layer has a second elastic modulus. In exemplary embodiments, the second elastic modulus is at least five times greater than the first elastic modulus.
G02B 6/04 - Light guidesStructural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres
An optical fiber cable comprises a plurality of buffer tubes, a hollow-core optical fiber disposed within one of the plurality of buffer tubes, and a central strength member. The plurality of buffer tubes are helically stranded about the central strength member, where a diameter d of the central strength member and a lay length l of the plurality of buffer tubes around the central strength member satisfy the following inequality: d≤0.075l−6.875. A cable jacket surrounds the plurality of buffer tubes, where a radius of curvature of the hollow-core optical fiber, when the optical fiber cable is kept straight at a temperature of 20° C., is 200 mm or greater.
An integrated glass waveguide assembly is provided. The integrated glass waveguide assembly includes a core unit assembly, and the core unit assembly includes a substrate, a transceiver chip attached to the substrate, and a polarization maintaining optical waveguide comprising a first end and a second end. The first end is connected to the transceiver chip, the second end is positioned proximate to an edge of the substrate, and the second end is configured to be connected to a polarization maintaining fiber to form an optical path with a laser module.
G02B 6/122 - Basic optical elements, e.g. light-guiding paths
G02B 6/42 - Coupling light guides with opto-electronic elements
G02B 6/10 - Light guidesStructural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
G02B 6/12 - Light guidesStructural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
Systems and methods of forming a waveguide are presented herein. The system comprises a waveguide assembly comprising a substrate defining a substrate refractive index. The system further comprises a waveguide formed within the substrate defining a waveguide refractive index, which is different than the substrate refractive index. The waveguide comprises a first end defining a first width, a second end defining a second width, and a curved section extending between the first end and the second end. The curved section defines a third width extending between an inside edge and an outside edge. The third width is different than at least one of the first width and the second width.
The present invention provides an assembly for aligning an optical fiber with an optical waveguide, addressing the challenges of mode mismatch and optical losses at the interface. The assembly comprises a glass substrate with an optical waveguide, an edge positioned adjacent to an optical fiber, and a mode-modifying element disposed on the substrate surface covering the waveguide end at the edge. The mode-modifying element modifies the mode profile of the waveguide to closely align to that of the optical fiber to significantly reduce mode mismatch and optical losses. Additionally, the mode-modifying element minimizes the number of interfaces encountered by light, further reducing optical losses. The assembly enables efficient coupling of light between optical fibers and integrated waveguides in various applications, such as optical communication systems, data centers, and sensing devices.
Perimeter external surfaces of arrays of hard polymer coated optical fibers with precise concentricity are used as datum surfaces for aligning (with an inter-core misalignment tolerance of less than 1 μm) mechanically spliced optical fiber arrays received within a rectangular bore of a rigid sleeve that is devoid of fiber alignment grooves. A method for splicing arrays hard polymer coated optical fibers involves forming ribbonized segments of the arrayed optical fibers, and receiving non-ribbonized segments of the arrays in contact with one another and with walls defining a rectangular cross-section bore of a rigid sleeve. A rigid sleeve for mechanically splicing arrayed optical fibers includes a unitary body structure having a medial portion with a rectangular cross-section bore arranged between first and second extension portions each having a U-shaped channel, with continuous bottom and side walls between the medial and extension portions, and with the sleeve being devoid of fiber alignment grooves.
An apparatus for use in connection with an enclosure is provided herein. The apparatus comprises a housing comprising a first portion and a second portion coupled at a base. The first portion comprises a closed surface extending between a first edge and a second edge. The second portion comprises at least one opening extending between a third edge and a fourth edge. Each of the first edge, the second edge, the third edge, and the fourth edge define an edge profile, configured to provide selective (e.g., rotational insertion) coupling with the enclosure for controlling cable entry into the enclosure.
Fiber optic cable assemblies comprising an optical connector terminating a fiber optic cable and methods of making the same are disclosed. The optical connector may comprise a housing having a passasgeway with a first portion of the fiber optic cable disposed within the passageway and a second portion of the cable rearward of the housing with a boot being molded about a portion of the housing and the portions of the fiber optic cable. For instance, the boot is monolithically formed with an inner portion disposed within the passageway of the housing adjacent to the first portion of the fiber optic cable and an outer portion of the boot that encapsulates the second portion of the fiber optic cable along with a rear portion of the housing of the optical connector. The assemblies disclosed simplify manufacturing and allow the ability to easily use different cables types.
A fiber optic cable assembly includes a fiber optic cable carrying a strength member and a plurality of optical fibers terminated by one or more fiber optic connectors. The cable assembly further includes a pulling grip assembly having a flexible line with a gripping end and an attachment end, a coupler at the attachment end, and a quick release assembly at the gripping end. The quick release assembly receives the coupler to releasably connect the attachment end to the gripping end. The flexible line is routed through a pulling loop with the attachment end and the gripping end of the flexible line connected at an end of the fiber optic cable. The attachment end and the gripping end are releasable from each other at the end of the cable. A method of attaching a pulling grip assembly to a fiber optic cable is also disclosed.
A fiber optic cable assembly is provided. The fiber optic cable assembly includes a fiber optic cable with an outer jacket that surrounds a plurality of subunits each containing at least one optical fiber. The outer jacket includes an end through which the plurality of subunits extends. The fiber optic cable assembly includes a furcation assembly proximate the end of the outer jacket through which the plurality of subunits extends. The furcation assembly includes a furcation plug that extends longitudinally a length between a first end and an opposite second end, The furcation plug includes a plurality of grooves that extend helically about a periphery of the furcation plug between the first end and the second end. Each of the plurality of grooves receives a respective one of the plurality of subunits such that each of the plurality of subunits is wrapped around the furcation plug at least one time.
G02B 6/44 - Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
G02B 6/54 - Underground or underwater installationInstallation through tubing, conduits or ducts using mechanical means, e.g. pulling or pushing devices
95.
EASY-TO-ACCESS FEATURE(S) FOR THIN-WALL OPTICAL CORE SUBUNIT
An optical fiber cable is provided. Embodiments of the disclosure relate to an optical fiber subunit for an optical fiber cable. The optical fiber subunit includes a membrane having an inner surface and an outer surface in which the inner surface defines a central passage. The subunit further includes an access feature disposed in the central passage and attached to the inner surface of the membrane. In various embodiments, the access feature includes a coating to provide enhanced attachment to the membrane. Also disclosed are embodiments of an optical fiber subunit having one or more subunits disposed within a central bore of a cable jacket and embodiments of a method of manufacturing a subunit for an optical fiber cable.
In one embodiment, a fiber optic connector includes a housing having a rear end and a front end with a longitudinal passageway extending from the rear end to the front end, the housing having a front portion, a rear portion, and at least one groove within at least one of the front portion and the rear portion, and at least one sealing member disposed within the at least one groove, wherein the at least one sealing member is fabricated from polytetrafluoroethylene.
A method of polishing a ferrule of a fiber optic connector is disclosed. The ferrule includes a plurality of optical fibers connected thereto and at least two reference datums, one being a primary reference datum and another being a secondary reference datum. The method includes inserting the ferrule in a port of a fixture, securing the ferrule within the port of the fixture, and polishing an end face of the ferrule while the ferrule is secured to the port of the fixture. The securing step includes imposing a first clamping force on the ferrule to engage the secondary reference datum of the ferrule with the fixture, and subsequently imposing a second clamping force on the ferrule to engage the primary reference datum of the ferrule with the fixture. A fixture for polishing a ferrule according to the method is also disclosed.
G02B 6/38 - Mechanical coupling means having fibre to fibre mating means
B24B 19/22 - Single purpose machines or devices for particular grinding operations not covered by any other main group characterised by a special design with respect to properties of the material of non-metallic articles to be ground
B24B 41/06 - Work supports, e.g. adjustable steadies
98.
METHOD AND APPARATUS FOR FIXTURING A FERRULE OF A FIBER OPTIC CONNECTOR DURING END FACE MEASURING
A method of measuring an end face of a ferrule is disclosed. The ferrule defines at least a primary reference datum and a secondary reference datum. The method includes inserting the ferrule in a port of a fixture and securing the ferrule within the port of the fixture by imposing a first clamping force on the ferrule to engage the secondary reference datum with a first reference datum of the fixture, and subsequently imposing a second clamping force on the ferrule to engage the primary reference datum with a second reference datum of the fixture. Features of the end face of the ferrule may be measured while the ferrule is secured to the port of the fixture. A processing interface for securing a ferrule within a port of a fixture in a precise, predetermined location and a fixture having such a processing interface are also disclosed.
Fiber optic adapters having a translating release for disengaging a fiber optic connector secured within the fiber optic adapter are disclosed. The translating release is configured for translation along the longitudinal axis of fiber optic adapter for releasing the optically mated external fiber optic connector from the fiber optic adapter. The translating release is at least partially disposed within the housing passageway and sized for receiving the external fiber connector therein. The fiber optic adapter may cooperate with a fiber optic core for aligning mating single-fiber or multi-fiber ferrules as desired. The fiber optic adapter may be a portion of the fiber optic adapter or mounted to a closure as desired. The fiber optic adapter may optionally use a resilient member(s) for biasing the translating release within the adapter housing.
A fiber optic terminal for making optical connections with external fiber optic connectors having multiple rows of optical fibers. The terminal comprises a multifiber input port having a multifiber input ferrule with a first row and a second row of input fiber bores for receiving respective first ends of optical fibers within the terminal along with a multifiber output port having a multifiber output ferrule having a first row and a second row of fiber bore outputs for receiving respective second ends of optical fibers. The terminal wiring scheme has some the second ends of optical fibers shifted to a different numbered row in the output fiber bores of the multifiber output ferrule. First ends of select optical fibers may be routed to single-fiber output ports and the multifiber output port may be daisy-chained to another terminal. The terminal may optionally include one or more fiber optic splitters within a cavity of the terminal.
patents
