Abstract: Cables are constructed with embedded discontinuities in the cable jacket that allow the jacket to be torn to provide access to the cable core. The discontinuities can be longitudinally extending strips of polymer material coextruded in the cable jacket.

Abstract: A modular high power, low passive intermodulation, active, universal, distributed antenna system interface tray that includes one or more front-end RF frequency duplexers instead of a high power, low passive intermodulation attenuator to achieve superior FIM performance. A cable switch matrix allows for the use of the system among varying power levels* and accomplishes the above in a modular architecture.

Abstract: A furcation tube for optical fibers has a polymer inner jacket surrounded by a fiber and strength member layer of fibers and strength rods, which is surrounded by a polymer outer jacket. The inner jacket may surround a plurality of inner tubes. The strength members may be arrayed around the inner jacket generally equidistant from one another. The strength members may be resin pultruded fiber rods and the fiber may be para-aramid fibers.

Abstract: An optical cable module and a method for manufacturing the same are disclosed. The optical cable module comprises a connector and an optical cable, and the optical cable is connected to the connector. A wavelength of at least one optical signal emitted from a laser of the connector is in a range of 380 nm to 980 nm. The optical cable comprises at least one optical fiber and an outer cladding layer, and the outer cladding layer surrounds the optical fiber, and the outer cladding layer includes at least one transparent portion, and at least one portion of the optical signal is leaked from the optical fiber and passes through the transparent portion to the surrounding environment.

Abstract: An optical cable module is disclosed. The optical cable module comprises a connector and an optical cable, and the optical cable is connected to the connector. The optical cable comprises at least one optical fiber, an outer cladding layer and a power line, and the outer cladding layer surrounds the at least one optical fiber and the power line, and the power line is configured to supply an electrical power.

Abstract: An optical fiber propagates a light beam at a predetermined wavelength at least in an LP01 mode and an LP02 mode. A dopant that changes a Young's modulus is doped to at least a part of a waveguide region 12a of a cladding 12 through which a light beam at a predetermined wavelength is propagated and to a region 11b in a core 11 in which the intensity of the light beam in the LP01 mode is greater than the intensity of the light beam in the LP02 mode. At least a part of the Young's modulus in the waveguide region 12a of the cladding 12 is smaller than a Young's modulus in the region 11b in the core 11 in which the intensity of the light beam in the LP01 mode is greater than the intensity of the light beam in the LP02 mode.

Abstract: A splicable fiber optic sensing system includes, a core, a sheath surrounding the core, an adhesive disposed between the core and the sheath at some locations and not at other locations, and at least one optical fiber disposed between the core and the sheath being sense transmissively locked to the core by the adhesive at the locations containing the adhesive.

Abstract: An optical fiber with a resilient jacket is disclosed. The optical fiber includes a cushion layer overlying the optical fiber in which the cushion layer is formed from a plurality of cushion members. The cushion members can be tubes that are hollow or that are partially or completely filled with a soft thermoplastic material. A polymeric sleeve overlies the cushion layer.

Abstract: An optical fiber package comprising an adhesive for coating optical fibers comprising part A and part B wherein Part A is an aqueous polymeric emulsion of 2-ethylhexylacrylate or butyl acrylate and acrylic acid or methacrylic acid and Part-B is polyvinylbutyral dissolved in isopropyl alcohol. The said system imparts stability to the optical fiber on long range exposure thereby improving performance.

Abstract: A multi-core optical fiber may include a cladding with a cross section having a central region and an outside diameter. Multiple transmission cores are arranged symmetrically within the central region of the cladding, extending parallel to a central axis of the multi-core optical fiber. Multiple alignment cores are arranged within the cladding, extending parallel to the central axis of the multi-core optical fiber and near the outside diameter of the cladding so that each of the multiple alignment cores are visible through a side view of the cladding. Ends of similarly configured multi-core optical fibers may be mated and aligned. Alignment cores of a first multi-core optical fiber may be aligned with alignment cores of a second multi-core optical fiber using a side view of the mating interface. Aligning the alignment cores causes multiple transmission cores with the multi-core optical fibers to also align.

Abstract: A process for manufacturing fiber optic overhead ground wire cable may include: providing an optical core; providing a reinforcing structure consisting of at least one layer of wires onto the optical core, wherein at least part of the wires are clad with first metallic material; extruding an outer layer onto the reinforcing structure, wherein the outer layer is made of second metallic material having a softening point substantially similar to a softening point of the first metallic material; and cooling the outer layer immediately after extruding the outer layer. A fiber optic overhead ground wire cable may include: an optical core comprising a plurality of optical fibers housed in an inner tube; and a reinforcing structure consisting of at least one layer of wires stranded onto the optical core. The cable may be substantially devoid of interstices between the at least one layer of wires and the inner tube.

Abstract: A process for manufacturing submarine optical communications cable may include: providing an optical core; providing a reinforcing structure consisting of at least one layer of wires onto the optical core, wherein at least part of the wires are clad with first metallic material; extruding an outer layer onto the reinforcing structure, wherein the outer layer is made of second metallic material having a softening point substantially similar to a softening point of the first metallic material; and cooling the outer layer immediately after extruding the outer layer. A submarine optical cable may include: an optical core comprising a plurality of optical fibers housed in an inner tube; and a reinforcing structure consisting of at least one layer of wires stranded onto the optical core. The cable may be substantially devoid of interstices between the at least one layer of wires and the inner tube.

Abstract: Cables including strength members that limit elongation of an outer jacket are described. A cable may include any number of transmission media, such as optical fibers, positioned within one or more cable cores or openings defined by an outer jacket. Additionally, at least one strength member may be in contact with the outer jacket. The at least one strength member may include central core or member and an external coating formed around or surrounding the central core. The external coating may be formed of one or more materials that limit elongation of the outer jacket to less than approximately 20 mm at temperatures up to approximately 70° C.

Abstract: An optical fiber cable includes an optical fiber core wire; a pair of tension members extending parallel to each other in an extension direction of the optical fiber core wire, sandwiching the optical fiber core wire; and a rectangular jacket covering the optical fiber core wire and the pair of tension members, and in a cross-section orthogonal to the extension direction, having a major axis in a facing direction of the tension members and a minor axis in a direction orthogonal to the facing direction, wherein each of the tension members is glass fiber reinforced plastic having a diameter in a range of 0.7 mm or more and 1 mm or less, and the jacket has a friction coefficient of 0.3 or less, the major axis of 4 mm or less, and the minor axis of 2.8 mm or less.

Abstract: A fire resistant optical communication cable is provided. The fire-resistant optical communication cable includes an extruded cable body including an inner surface defining a passage in the cable body and an outer surface. The fire-resistant optical communication cable includes a plurality of elongate optical transmission elements located within the passage of the cable body. The fire-resistant optical communication cable includes a layer of intumescent particles embedded in the material of the cable body forming an intumescent layer within the cable body. The cable may include one or more elements having flame resistant coatings that, upon exposure to heat, form a ceramic layer increasing the combustion time of the coated element.

Abstract: The embodiments disclosed herein seek to eliminate substantially all of the voids or air gaps among neighboring fibers within a CFU by wetting a plurality of optical fibers that comprises the CFU with an acrylate prepolymer resin before the plurality of the optical fibers are grouped together tightly. In one embodiment, instead of extruding a first acrylate prepolymer resin to the optical fibers immediately after a first die, the disclosed process wets the optical fibers with a first acrylate prepolymer resin prior to the first die.

Abstract: The present invention provides an optical fiber in which transmission loss is not easily increased when the optical fiber is dipped in water and then dried and also which has a solvent resistant property and a micro-bend resistant property. An optical fiber according to one embodiment of the present invention is an optical fiber in which at least two layers of coating resin coat the circumference of a glass optical fiber. When a Yang's modulus of the first coating layer of the coating resin is defined by PY (MPa) and an elution rate of the coating resin after dipping in 60° C. hot water for 168 hours is defined by E (mass·%), a formula of 1.8?E?8.61×PY+1.40 is satisfied.

Abstract: Embodiments of a method and apparatus for controlling the mechanical stabilization of an optical fiber are disclosed. The method may consist of placing an inflatable bladder between an optical fiber and a protective jacket. The bladder may be inflated with air, inert gas, or liquid to a desired pressure. The bladder may be sectioned to extend along part of or the entire length of the fiber. The bladder may isolate the optical fiber in a periodic fashion. The temperature of the material inside the bladder may vary axially along the optical fiber. Embodiments of the invention can stabilize the optical fiber by providing mechanical isolation from vibration and other perturbations. Embodiments of the invention can also alter Stimulated Brillouin Scattering (“SBS”) and Stimulated Raman Scattering (“SRS”) thresholds using either thermal or vibrational perturbations.

Abstract: A fiber optic cable includes a core and a binder film surrounding the core. The core includes a central strength member and core elements, such as buffer tubes containing optical fibers, where the core elements are stranded around the central strength member in a pattern of stranding including reversals in lay direction of the core elements. The binder film is in radial tension around the core such that the binder film opposes outwardly transverse deflection of the core elements.

Abstract: An optical cable includes an outer tubing. At least one optical fiber disposed within the outer tubing. A stiffening member configured to bend with bending of the outer tubing; wherein the stiffening member shifts a neutral plane of the cable away from the at least one optical fiber. Also included is a method of increasing a bending sensitivity in an optical cable.

Abstract: An optical cable comprises an optical fiber ribbon, a tension member and a sheath. The optical fiber ribbon is constructed by integrating a plurality of optical fibers arranged in parallel. The sheath is provided so as to surround the optical fiber ribbon. The sheath is used for protecting the optical cable. One optical fiber ribbon is arranged twistably within an inner space surrounded by the sheath.

Abstract: Molded fiber optic cable furcation assemblies, and related fiber optic components, assemblies, and methods are disclosed. In one embodiment, an end portion of a fiber optic cable with a portion of a cable jacket removed to expose optical fibers and/or a cable strength member(s) therein and thereafter placing the cable into a mold for creating a molded furcation plug about the end portion of the fiber optic cable. The furcation plug may be overmolded about the end portion of the fiber optic cable. The molded furcation plug can be used to pull a fiber optic cable without damaging the optical fiber(s) disposed within the fiber optic cable. The molded furcation plug is advantageous since it manufactured with fewer parts, without epoxy, and/or without a labor intensive process that may be difficult to automate.

Abstract: In various embodiments, a tubular comprises a tubular outer sheath defining an inner void; one or more core elements or assemblies disposed within the inner void; and a substantially solid filler in various embodiments disposed within and substantially filling the inner void, where the filler is adapted to give the tubular hoop strength in a crush situation and comprises a polymer with a density of at least 1.0. In some embodiments, these core assemblies comprise an extruded polymer layer typically extruded about core elements in a single pass, fitting about them without a sharp edge and defining an outer shape. The resulting tubular can comprise multiple regions which, though substantially filled, are filled with differing fillers densities.

Abstract: A branching device for enclosing a hybrid fan-out cable the hybrid fan-out cable comprising plural optical cables and power cables, the branching device includes: an enclosure having a first end, through which the hybrid fan-out cable is inserted, and a second end that is opened; and a gasket provided at the second end of the enclosure and having plural through-holes; and a cover thread-coupled to the second end of the enclosure to fasten the gasket to the second end of the enclosure in such a manner that the through-holes are exposed. In the enclosure, the hybrid fan-out cable is branched out into plural individual sub-part cable components, and each of the sub-part cable components is drawn out through one of the through-holes of the gasket to the outside. The gasket is formed from an elastic material which forms a tight seal between the inner peripheral surface of the enclosure and with the outer peripheral surface of each of the sub-part cable components to seal the other end of the enclosure.

Abstract: An optical fiber cable including, in a radial direction outward, a central strength member, a first layer of loose buffer tubes stranded around the central strength member, at least one of the loose buffer tubes of the first layer containing at least one light waveguide, an intermediate layer, a second layer of loose buffer tubes stranded around the intermediate layer, at least one of the loose buffer tubes of the second layer containing at least one light waveguide, and a jacket surrounding the second layer of loose buffer tubes, wherein the intermediate layer is formed of a material having a high coefficient of friction.

Abstract: The optical module 10 includes an optical cable 11 including a first tension member 16 surrounding the optical fiber 14, a second tension member 17 surrounding the first tension member, and an outer sheath 20 surrounding the second tension member; and a housing 20 attached at a terminal of the optical cable 11, wherein the first tension member 16 and the second tension member 17 are fixed to the housing 20 to endure a tensile force applied to the optical cable.

Abstract: An optical device for illuminating the vasculature of a mammal using ultraviolet, visible, and/or infrared light is described. The optical device includes an optical fiber encased in a biocompatible sheath, and is dimensioned to lie within an intravascular catheter. When placed within a vascular space and coupled with a suitable light source the optical device illuminates the vascular space and its contents. The faces of the optical fiber are configured to optimize the capture of ultraviolet, visible, and/or infrared light from a light source without the use of active optics.

Abstract: An optical communication cable is provided. The cable includes a core element located in a cable jacket. The core element includes a buffer tube having an outer surface, an inner surface and a channel defined by the inner surface of the first tube. The core element includes an optical fiber located within the channel of the buffer tube and a color layer formed from a surface-deposited colorant material applied to the outer surface of the buffer tube.

Abstract: A fiber optic jumper cable having a central axis includes a bend-resistant optical fiber generally arranged along the central axis. A tensile-strength layer surrounds the bend-resistant optical fiber. A protective cover surrounds the tensile-strength layer and has an outside diameter DO in the range 1.6 mm?DO?4 mm.

Abstract: An optical fiber includes a core, a clad and a coating layer. The core is made of glass, has a higher refractive index than that of the clad, and can guide propagating light. The clad surrounding the core is made of glass or plastic. The coating layer surrounding the clad is made of plastic. The core has a diameter d1 of from 70 to 105 ?m. The clad has a diameter d2 of from 80 to 130 ?m. The glass has a diameter of from 70 to 130 ?m. The coating layer has a thickness t3 of from 12.5 to 85 ?m. The optical fiber has an effective numerical aperture NA of from 0.28 to 0.35. The optical fiber of this embodiment has a transmission loss of 20 dB/km or smaller and a transmission bandwidth of 40 MHz·km or larger at an 850-nm wavelength.

Abstract: A hydrocarbon application cable of reduced nylon with increased flexibility and useful life. The cable may be of a hose or solid configuration and particularly beneficial for use in marine operations. A power and data communicative core of the cable may be surrounded by a lightweight intermediate polymer layer of a given hardness which is ultimately then surrounded by an outer polymer jacket having a hardness that is greater than the given hardness. Thus, a lighter weight polymer is provided interior of the outer polymer jacket, which may be of nylon or other suitably hard material. As such, the overall weight and cost of the cable may be substantially reduced.

Abstract: A traceable cable assembly comprises: a fiber optic cable including a cable jacket that encloses an optical fiber, and two conductive elements that are embedded spacedly in the cable jacket and that extend along the optical fiber; and multiple lighting units spacedly secured to the fiber optic cable. Each lighting unit includes a connecting seat provided with a light emitting element, and mounted to the fiber optic cable so that the light emitting element is connected electrically between the conductive elements through the connecting seat. A portable power device is detachably coupled to the connecting seat of one lighting unit for supplying a supply voltage to the light emitting element of each lighting unit through the conductive elements.

Abstract: A hybrid cable includes a guide in the center of the cable, elements stranded side-by-side with one another around the guide, fiber optic elements including optical fibers, a metal armor, and a polymeric jacket of the cable surrounding the metal armor. The elements stranded side-by-side with one another around the guide include electrical-conductor elements, which themselves include stranded metal wires insulated in a jacket of the electrical-conductor elements. The electrical-conductor elements are round and have the same diameter as one another. Furthermore, the electrical-conductor elements are each within the range of 10 American wire gauge (AWG) to 1\0 AWG. The fiber optic elements may be included in or integrated with the group of elements stranded side-by-side with one another around the guide. The metal armor surrounds the elements stranded side-by-side with one another around the guide, and serves as a grounding conductor and an electro-magnetic interference shield.

Abstract: An optical fiber cable with an optical fiber, an FR-aramid yarn, and a jacket that can be used as a flame retardant compact drop cable for multiple dwelling units.

Abstract: An example fiber optic cable includes an outer jacket having an elongated transverse cross-sectional profile defining a major axis and a minor axis. The transverse cross-sectional profile has a maximum width that extends along the major axis and a maximum thickness that extends along the minor axis. The maximum width of the transverse cross-sectional profile is longer than the maximum thickness of the transverse cross-sectional profile. The outer jacket also defines first and second separate passages that extend through the outer jacket along a lengthwise axis of the outer jacket. The second passage has a transverse cross-sectional profile that is elongated in an orientation extending along the major axis of the outer jacket. The fiber optic cable also includes a plurality of optical fibers positioned within the first passage a tensile strength member positioned within the second passage.

Abstract: Provided is a plastic optical fiber cable including a plastic optical fiber 12 comprising of a core 11A and a cladding 11B, and a jacketing layer covering the plastic optical fiber 12, in which the jacketing layer includes at least two layers of an inner layer 13 and an outer layer 14, the inner layer 13 is formed of a resin comprising of a copolymer of ethylene and a (meth)acrylic compound, and the outer layer 14 is formed of a fluorine-based resin. A plastic optical fiber cable excellent in flame retardance, appearance, and processability at the time of use is obtained from the plastic optical fiber cable described above.

Abstract: A hybrid cable includes a cable jacket and elements stranded within the cable jacket. The elements include greater-capacity electrical-conductor elements and sub-assembly elements. The greater-capacity electrical-conductor elements include a metallic conductor jacketed in a polymer, each within the range of 10 American wire gauge (AWG) to 1\0 AWG. The sub-assembly elements include stranded combinations of sub-elements, where the sub-elements include at least one of polymeric tubes comprising optical fibers and lesser-capacity electrical-conductor elements, each having a lesser current-carrying capacity than 10 AWG. The sub-elements are stranded with respect to one another and additionally stranded as part of sub-assembly elements with respect to other elements.

Abstract: An optical fiber cable enabling further reduction of possibilities of disconnection of optical fiber due to, for instance, cicada oviposition. The optical fiber cable (10) is provided with: an optical fiber core (1); a tension member (2), which is arranged in parallel to the optical fiber core (1) on one side or on the both sides of the optical fiber core (1); and a sheath (3) which integrally covers the optical fiber core (1) and the tension member (2). At least one portion of the sheath (3) is composed of a polymeric material having a yield point stress of 12 MPa or higher.

Abstract: Disclosed are methods for creating a demarcation of at least one optical fiber in a structure along with a fiber optic cable. The method may include the steps of providing at least one optical fiber having a covering, heating a portion of the covering, and deforming the covering about the at least one optical fiber at a first location to inhibit movement of the at least one optical fiber with respect to the covering. The method may be applied to one or more optical fibers within a covering such as bare loose fibers, ribbonized fibers, buffered fibers or the like.

Abstract: An optical fiber cable which is suitably set in a conduit by pushing the optical fiber cable into the conduit so as to insert the optical fiber cable through the conduit and which does not reduce the ease of manufacture and the mechanical characteristics of the optical fiber cable. The optical fiber cable includes an optical fiber cable core wire and a sheath covering the optical fiber cable core wire, wherein a dynamic friction coefficient between a surface of the sheath of the optical fiber cable and a surface of a sheath of another optical fiber cable is 0.17 to 0.34, and a dynamic friction coefficient between the surface of the sheath of the optical fiber cable and a surface of a sheet composed of polyvinyl chloride is 0.30 to 0.40.

Abstract: A method for connecting user devices to optical fiber units contained in an optical cable includes: providing an opening in a sheath of the optical cable to access the optical fiber units contained in the optical cable; extracting a segment of at least one optical fiber unit from the optical cable through the opening; inserting a free end of the extracted segment of optical fiber unit into a protection tube; making the protection tube slide on the extracted segment of optical fiber unit to insert an end portion of the protection tube, distal from the free end of the extract segment of the optical fiber unit, into the optical cable through the opening; positioning a closure element on the optical cable in correspondence of the opening so as to substantially realize a closure thereof; securing in a removable way the closure element to the optical cable and bringing the free end of the extracted segment of optical fiber unit in correspondence of a connection point of a user device.

Abstract: An optical cable includes an optical fiber ribbon core wire provided with an optical fiber having a core and a cladding that surrounds the core, a sheath that surrounds the optical fiber ribbon core wire, and a braid arranged inside the sheath. The braid is formed to include wires woven with each other. In the optical cable, the wire that forms the braid is pushed into the sheath so that the sheath is integrated with the braid.

Abstract: The present disclosure relates to a telecommunications cable having a layer constructed to resist post-extrusion shrinkage. The layer includes a plurality of discrete shrinkage-reduction members embedded within a base material. The shrinkage-reduction members can be made of a liquid crystal polymer. The disclosure also relates to a method for manufacturing telecommunications cables having layers adapted to resist post-extrusion shrinkage.

Abstract: The present invention relates to a method and an arrangement for visual indication of an electrical quantity, being one or several of power, current and/or voltage through a conductor. The arrangement comprises a substantially wire shaped illuminator and a controller which controls at least one illumination characteristic of said illuminator with respect to said electrical feature.

Abstract: There is provided an optical fiber ribbon capable of realizing, in an optical cable, sure reliability, a reduction in size and weight, higher density, and a further improvement in workability, a method of manufacturing the same, and an optical cable using such an optical fiber ribbon. An optical fiber ribbon 10 includes four single-core coated optical fibers 11 arranged in parallel on a same plane; and coupling parts 12 arranged at intervals in a length direction and a width direction, each coupling only adjacent two of the single-core coated optical fibers 11, wherein an interval P of the coupling parts 12 coupling the same two single-core coated optical fibers is not less than 20 mm nor more than 90 mm and a length Q of each of the coupling parts 12 is not less than 1 mm nor more than 10 mm.

Abstract: Light diffusing optical fiber bundles, illumination systems including light diffusing optical fiber bundles, and methods of affixing light diffusing optical fiber bundles to polymer optical fibers are disclosed. A light diffusing optical fiber bundle includes an optically transmissive jacket and a plurality of light diffusing optical fibers disposed within the optically transmissive jacket. Each of the plurality of light diffusing optical fibers includes a glass core including a plurality of nano-sized voids. The plurality of light diffusing optical fibers extend along a length of the optically transmissive jacket such that the plurality of diffusing optical fibers are not interwoven.

Abstract: A rack cabling system including a rack having mounted thereon a first hardware component and a patch panel housing mounted on the rack adjacent the first hardware component. The patch panel housing populates no more than a three rack unit (RU space), the patch panel housing including a first end having cable pathway openings and a second end having connector elements mounted therein. The patch panel may have a first cable pathway opening located adjacent the first side of the housing and defining a primary position and a first connector element mounted on the second end and the first connector element having a first position corresponding to the primary position of the first cable pathway opening. Cable harnesses are routed with less than three bends of the cables between the first hardware component and the patch panel housing, so that the first cable harness is terminated at the first connector element in the first position.

Abstract: A buffered optical fiber (10) comprises a central core (11) surrounded by an optical cladding (12), a coating (13) surrounding the optical cladding, a protective buffer (15) surrounding the coating and an intermediate layer (14) between the coating and the protective buffer. The intermediate layer consists of hot melt seal and peel material. The intermediate layer (14) may be extruded in tandem with the outer protective buffer (15).

Abstract: Cables have armor including a polymer, the armor having an armor profile that resembles conventional metal armored cable. The armor provides additional crush and impact resistance for the optical fibers and/or fiber optic assembly therein. The armored cables recover substantially from deformation caused by crush loads. Additionally, the armored fiber optic assemblies can have any suitable flame and/or smoke rating for meeting the requirements of the intended space.

Abstract: Provided is an method of manufacturing an optical fiber tape core wire with which, even when the optical fiber tape core wire is separated into optical fiber wires, it can be determined which optical fiber tape core wire each optical fiber wire is associated with. A fiber running length adjustment device 13 adjusting the running lengths of the optical fiber wires 2 running from printers 8 (8A to 8D) to a tape forming device 11 is used to adjust the running lengths of all the optical fiber wires 2 between the printers 8 and the tape forming device 11 to a same length. By this adjustment, markings 6 formed on each optical fiber wire 2 (2A to 2D) can be aligned with the corresponding markings 6 formed on the other fiber wires 2 to the same position.