Abstract: Covered optical fibers are provided comprising at least on optical fiber; and a buffer tube covering surrounding the optical fiber. The buffer tube covering is comprised of a blend of at least 40% by weight of a copolyether ester elastomer, at least 10% by weight of a rubbery modifier, and at least 10% by weight of an amorphous thermoplastic polymer, and has a melting point of at least 165° C. and a Trouser Tear Strength of less than 65 N/mm.

Abstract: A fiber optic cable for use in a hostile environment includes a fiber in metal core. The fiber in metal core includes one or more optical fibers that are disposed inwardly from an inner axial tube. The fiber optic cable also includes a hydrogen barrier shell that is disposed outwardly from the inner axial tube. The hydrogen barrier shell includes a material that is capable of reducing hydrogen permeation through the fiber optic cable. In this particular embodiment, the hydrogen barrier layer also includes a thickness of at least one-thousandth of an inch.

Abstract: A single core optical fiber cord having an outer diameter of 1.2 mm or less, and having a structure in which an optical fiber core wire having a resin coating provided at the center, a tensile-strength-fiber layer around the periphery of the optical fiber core wire, and a coating layer around the outer periphery of the tensile-strength-fiber layer is provided. The coating layer can be composed of a non-halogen fire-retardant resin. The optical fiber cord has excellent fire retardant, mechanical and handling properties, although the outer diameter thereof is 1.2 mm or less.

Abstract: This invention greatly improves the quality of images obtained using optical systems illuminated by coherent light. It does so by removing the undesirable psuedo-random variations in the final image due to interference speckle and inhomogeneities in the spatial intensity distribution of the light source. A bundle of light-guiding fibers is interposed between the illumination source and the imaging system. Non-uniform propagation within the fiber bundle creates a psuedo-random phase variation across the illumination beam, which gives rise to a dynamic interference speckle pattern superimposed upon the desired image acquired by the optical system. Rotating the fiber bundle around the axis of propagation, whilst simultaneously integrating the output of the photosensitive detector over a period of time, substantially removes variations due to source inhomogeneities and coherent interference.

Abstract: The manufacturing apparatus for optical fiber cord is provided with an extrusion machine, a cooling chamber, an intermediate pulling device, a heating chamber, a final pulling device, and a winding machine wherein the machines, the devices and the chambers are disposed in this order. One or more optical fiber cores and one or more reinforcing fibers are sheathed with thermoplastic resin by the extrusion machine. The thermoplastic resin is solidified by cooling so as to be a resin sheath. The sheathed fibers are annealed by the heating chamber so that its residual stress is relieved.

Abstract: A termination assembly for use in an optical hydrophone module, comprising a module oil seal and an optical fiber seal. The termination assembly is used at the ends of modules and provides a means for filling individual modules with fill fluid. A module oil seal comprises a cylindrical wall defining a cavity, with one end substantially closed and the other end open. An annular face plate on the open end makes a seal dividing a coupling and a clevis. A check valve is mounted to an orifice that passes through the substantially closed end of the module oil seal. Optical fibers pass through the substantially closed end and the optical fiber seal is provided around the optical fiber that passes therethrough. The fiber seal fits snugly in a module oil seal opening. Both components serve to provide a seal that can withstand high pressures and maintain optical fiber integrity.

Abstract: A method for treating a polymeric optical element which includes the steps of mounting a polymeric optical element into a chamber, injecting a compressed gas as an annealing medium into the chamber and annealing the polymeric optical element and removing the annealing medium from the chamber. The present method provides a new way of preventing disadvantageous molecular orientation and residual stress which causes a deterioration in the optical properties of the polymeric optical element.

Abstract: A fiber optic cable including a cable core having at least one optical fiber and a ripcord. In one embodiment, the ripcord is a conductive material operative, upon application of a sufficient pulling force, to rip at least one cable component for facilitating access to said at least one optical fiber. In other embodiments, the ripcord is formed from a semi-conductive material, the ripcord is removably attached to at least one cable component, and/or the ripcord has an excess length.

Abstract: A method of making a fiberoptic dental light probe having a bent distal end with a tapered tip. The method includes the step of heating just the mid-section of a vertically-disposed, solid, cylindrical fused fiberoptic rod and permitting the mid-section to stretch and thin under its own weight by the force of gravity. Local heating of the mid-section is accomplished with a high-temperature small flame, such as the flame emitted by a gas-fired blow torch. The heat is removed when the rod stretches to a predetermined length, and then after the mid-section cools, the mid-section is cut to produce a pair of identical tapered tip probes. Thereafter, the distal ends of the probes can be bent to a desired angle and the ends of the probes can be cut to size, ground, and polished. A unique probe configuration is also provided.

Abstract: A fiber optic cable is provided that includes a plurality of lengthwise extending, non-jacketed bundles of optical fibers and a cable jacket surrounding the bundles of optical fibers. Each bundle of optical fibers may include a binder, such as a binder thread, for maintaining the integrity of the bundle. The binder may include, for example, a binder thread formed of an air entangled, textured, continuous multi-filament thread. The fiber optic cable may also include a separation element for preventing adhesion between the bundles of optical fibers and the cable jacket without having to separately jacket each bundle of optical fibers.

Abstract: An optical fiber cable that has a cable core formed by covering an external circumference of a coated optical fiber or a collective coated optical fiber with a cushioning member, a tension member, and a thermoplastic resin sheath for collectively covering the cable core and the tension member, wherein the cushioning member contains a blended fiber composed of a non-water absorbent fiber and a water absorbent fiber.

Abstract: A lensed polarization maintaining fiber having a lens on an end thereof has a core, two stress-applied regions disposed on both sides of the core, respectively, and a clad containing the core and stress-applied regions. The lens has at least an inclined face, the inclined face including an edge. Each of the stress-applied regions is exposed on the inclined face except the edge.

Abstract: Between an optical fiber (LF11, LFB12, LFB13) and a surrounding slot element (AH11, AH12, SB13) of an optical transmission element (OE11 to OE13) there is at least one dry and compressible fixating element (FE11 to FE13), which surrounds the optical fiber totally or partially, and which exerts a defined contact pressure against the slot element and against the optical fiber for fixating the optical fiber in the longitudinal direction of the transmission element. The fixating element is further formed and positioned in such a way, that position changes of the optical fiber due to bending or elongation are possible. In this way, unallowable attenuation increases in the optical fiber due to bending or position changes can be avoided.

Abstract: A tight buffered optical fiber having a protective layer generally surrounding the optical fiber, a release layer at least partially bonding to and generally surrounding the protective layer and a buffer layer generally surrounding and being strippable from the release layer. The release layer including an acrylate with oligomers, monomers and a reactive release substance distributed with a matrix. The reactive release substance may include a silicone selected from the group including methyl and phenyl silicones. The matrix may be mechanically or chemically bonded to the protective layer so that stripping the buffer layer does not remove the release layer.

Abstract: An optical cable has a plurality of one-groove spacers 3 which are twisted in one direction around a central member 1. Anti-tensile elements 2 are arranged in the central portion of the central member 1. Each one-groove spacer having a single groove which is linear lengthwise and substantially square in cross section and holding a stack of a plurality of optical fiber ribbons 4. The inner width and the height of the side walls of the groove of the one-groove spacer are set greater than the diagonal length of the stack. Therefore, the transmission loss becomes reducible because the contact portions of the optical fiber ribbons with respect to the side walls of the grooves vary in the longitudinal direction, thus preventing a specific number of optical fibers from being continuously subjected to edgewise pressure.

Abstract: An optical fiber cable includes an optical fiber ribbon stack having a plurality of optical fibers, and at least one cushion member disposed on outer side surfaces of the optical fiber ribbon stack. The cushion member functions as a spacer and strain energy absorbing member for protecting corner fibers of the optical fiber ribbon stack from bending and contact stresses due to contact with a buffer tube or other surrounding elements. The cushion member may have material characteristics, such as contact hardness and Young's modulus, which are similar to those of the ribbon stack, or which gradually change from a soft inner layer at the side of the cushion member which contacts the ribbon stack to a stiff outer layer at the side of the cushion member which may contact a buffer tube or other surrounding elements.

Abstract: A system for organizing elongated objects (such as wires, cables, pipes, hoses, ducts, tubing, and other similar items) into bundles to create a more uniform, neat and functional arrangement is disclosed. The system includes a fastener adapted to extend along the length of an elongated object. The fastener provides a continuous attachment to another elongated object or to another object for a distance along the length of the elongated object. The fastener is preferably integrated with the structure of the elongated object, or alternatively, it may be applied as a wrap around the elongated object.

Abstract: An optical fiber telecommunication cable including a sheath and at least one optical fiber is provided. The sheath encloses at least one optical fiber, and a hydrogen absorbing composition is disposed between the sheath and the at least one optical fiber. The hydrogen absorbing composition includes an oil, a thixotropic agent, an oxidant system and a carbon nanostructure component, wherein the carbon nanostructure component is hydrogen absorbent.

Abstract: A method of coating an optical fiber constituted by a doped silica core (1) and by silica cladding (2) consists in surrounding the doped silica core (1) and the silica cladding (2) in coating constituted by a first coating portion (3) of photocurable resin and a second coating portion (4) made by extruding a thermoplastic polymer.

Abstract: A tight buffered optical fiber and methods of manufacturing the same include an optical fiber and a tight buffer layer. The tight buffer layer has a predetermined wall thickness generally surrounding the optical fiber and at least one preferential tear portion generally formed along a longitudinal axis of the tight buffer layer. In one embodiment, the tight buffered optical fiber has a delta attenuation of about 0.300 dB/km or less at a temperature of about −40° C. at a reference wavelength of about 1550 nm, thereby making the tight buffered optical fiber suitable for outdoor environments. Other embodiments can include a buffer layer surrounding one or more optical fiber ribbons. In other embodiments, the buffer layer can be formed from a material having an elongation to break ratio of about 500% or less.

Abstract: A unitized fiber optic cable (10) having cables (20) with respective buffer units (30) therein. Each buffer unit (30) includes at least two optical fibers (31) generally tightly held by a buffer layer (32) for sliding contact therewith. The buffer units (30) can be stranded about a central member (22) and enclosed in a jacket (28).

Abstract: A gas pipe explorer formed of a plurality of connecting elements, and an articulation element between the connected elements. The connected elements include drive capabilities, and the articulation element allows the connected elements to traverse gas pipes of arbitrary shapes and sizes. A sensor may sends the characteristics of the gas pipe, and the communication element may send back those sends characteristics. The communication can be wired, over a tether connecting the device to a remote end. Alternatively, the connection can be wireless, driven by either a generator or a battery.

Abstract: A process for producing a plastic optical member is provided that includes injecting a polymerizable monomer composition into a hollow plastic tube and polymerizing the composition within the hollow tube, wherein prior to injecting the composition one end of the hollow tube is sealed with a resin. The resin may have a composition different from that of the plastic forming the hollow tube. A process for producing a plastic optical fiber base material is also provided that includes injecting a polymerizable monomer composition into a hollow plastic tube and polymerizing the composition within the hollow tube, wherein prior to injecting the composition one end of the hollow tube is sealed with a resin. Furthermore, a process for producing a plastic optical fiber is provided that includes drawing the plastic optical fiber base material obtained by the above process. Moreover, also provided are a plastic optical member and a plastic optical fiber, which are produced by the above processes.

Abstract: A continuous, single-step, low-temperature process combines metal coating with the splicing of fibers, producing a single, continuous low-cost process for embedding fibers in metal, and/or the splicing of fibers with a joint featuring uniform composition and high strength requiring no additional adhesives. The method can be used to create terminations for cables, or it can be used as a method of splicing or joining optical fibers by positioning the ends of the two fibers under the foils, so that they abut prior to creating the bond. The consolidation material may be provided in sheets, with or without fiber-locating grooves or, alternatively, droplets may be used. In the preferred embodiment, ultrasonic vibrations are used as the source of consolidation energy. A range of metals are suited to the process, including aluminum, copper, titanium, nickel, iron and their alloys as well a numerous other metals of more limited structural utility.

Abstract: The optical fiber cable includes an assembly of at least two flexible tubes accommodating optical fibers, a sheath enveloping the assembly of tubes, and at least one filamentary form strength member at the periphery of the assembly of tubes. The tubes preferably extend in the sheath in a helical or an SZ assembly. The tubes are stuck together. The sheath is preferably made of polyethylene and the tubes are preferably made of polyvinyl chloride (PVC) or a thermoplastics elastomer with diol flexible segments. In this method, when extruding the sheath around the tubes, the temperature at which the material of the sheath is extruded is adjusted to cause the tubes to stick together.

Abstract: The present invention relates to a loose-tube, optical-ribbon cable, which comprises a central tensile-strength component situated in the center of the optical-ribbon cable; a plurality of loose tubes mounted with a bundle of optical-ribbon fibers, wherein the bundle of optical-ribbon fibers are formed by laminating multiple optical-ribbon fibers, each optical-ribbon fiber including multiple cores of optical fibers stranded in a single row and a sheath surrounding the multiple cores of optical fibers, wherein the plurality of loose tubes are stranded around the central tensile-strength component; a plurality of circle-shaped, water-absorbing members arranged in a hollow which is formed outside the pair of loose tubes neighboring each other; a water-absorbing tape for surrounding the plurality of loose tubes and plurality of circle-shaped, water-absorbing members; and, an external sheath situated in the outermost surface of the optical ribbon-cable for protecting the interior of the loose tube optical-ribbon c

Abstract: A device for organizing multiple leads, with the device having a first component, and a separate second component, with the first and second components being secured together by at least one fastener, and with the device having formed therein a plurality of grooves for the placement therein of leads. The device preferably has an upper surface, a lower surface, two side surfaces, and two ends, with the first and second components being secured together by a pair of fasteners, with one each of the fasteners being located adjacent opposite ends of the device. In one embodiment, the first component has a plurality of apertures formed therein and a plurality of upright wall members, with the wall members forming at least one sidewall in each groove, and the second component has a plurality of integral fasteners, with one each of the fasteners extending through each of the apertures to secure the first and second components together.

Abstract: A fiber optic cable having at least two interfaces being formed by first and second members. Between the interfaces is at least one retention area having an optical fiber component disposed therein. The retention area is disposed generally longitudinally and non-helically relative to an axis of the cable. The cable may also include a cable jacket substantially surrounding the members, a cushioning zone adjacent the optical fiber component, a water-blocking component and/or an interfacial layer. In another embodiment, a fiber optic cable includes a strength group having at least one strength member and an optical fiber being proof-tested to 125 KPSI or greater.

Abstract: The manufacturing apparatus for optical fiber cord is provided with an extrusion machine, a cooling chamber, an intermediate pulling device, a heating chamber, a final pulling device, and a winding machine wherein the machines, the devices and the chambers are disposed in this order. One or more optical fiber cores and one or more reinforcing fibers are sheathed with thermoplastic resin by the extrusion machine. The thermoplastic resin is solidified by cooling so as to be a resin sheath. The sheathed fibers are annealed by the heating chamber so that its residual stress is relieved.

Abstract: An optical fibre with a coloured coating, in particular a primary coating, is described, together with a polymer composition for said coating in which an organic dye is dissolved in the base cross-linkable mixture. The optical fibres of the invention show a lesser signal attenuation and a more stable primary coating coloration with the passage of time.

Abstract: In an optical cable consisting of a metallic core (1) with at least one channel (2), which extends in the longitudinal direction of the core (1) and in which at least one optical waveguide (13) is arranged, the at least one channel (2) is arranged within the sheath encasing the core (1) and is closed to the exterior.

Abstract: A method is disclosed for protecting optical fibers embedded in the armor of a tow cable. The method includes the steps of winding a resin-impregnated fiber onto a stainless steel tube, and curing the resin to form a hard protective filament shell around the stainless steel tube. The fiber is a continuous fiber and the step of impregnating is either in combination with the step of winding or prior to the step of winding. The fiber used is any one of a carbon fiber, a Kevlar™ fiber, a boron fiber or the like. The winding is either applied during formation of the steel tube or subsequent to formation of the steel tube. The method further comprises the step of winding galvanized steel armor wires of a predetermined diameter around the tow cable core to form the tow cable and helixing the protected tube amongst the galvanized steel armor wires.

Abstract: The present invention relates to a fiber coated with a water blocking material that includes an essentially water free dispersion comprising a superabsorbent polymer and a dispersing medium. The fibers made according to this invention may be used, for example, as fiber reinforcing material used in the manufacture of cables, and in particular in yarns for fiber optical cables that use optical light wave guides for optical communication transmissions.

Abstract: A tight-buffered optical fiber includes an optical fiber, at least a first buffer layer of a polymer material enclosing the optical fiber, and a plurality of strength members embedded in the first buffer layer and longitudinally disposed around the optical fiber. A second buffer layer of polymer material may also be formed to enclose the first buffer layer. The first and second buffer layer may be made of acrylate and may be either radiation or thermally curable. The second buffer layer may also have a plurality of strength members embedded in it and longitudinally disposed around the optical fiber.

Abstract: An optical corrosion sensor employs an optical fiber Bragg grating 20 embedded within an optical fiber 18. The grating 20 has a coating 40 made of a material, such as aluminum, which corrodes or can otherwise be removed. The coating 40 exerts forces 46 radially inward around and along the grating 20 so as to cause the wavelength bandwidth of the grating reflectivity profile to become broader and to be shifted relative to its uncoated condition. Also, the forces on the grating 20 are reduced when the coating corrodes, thereby causing the wavelength bandwidth and shift of the reflectivity profile of the grating to narrow and to return to its uncoated condition.

Abstract: The present invention discloses an optical fiber cable of diameter D1 (mm) in which an adhesive layer having a thickness of 0.5 to 200 &mgr;m, a primary coating layer and a secondary coating layer are sequentially formed around the outside of an optical fiber in which the outermost layer is composed of vinylidene fluoride polymer; wherein, in the case the diameter of the optical fiber is represented with Da (mm), the thickness of the adhesive layer is represented with d (mm), and Da+2d is represented with D2, then D1/D2=1.2 to 3.5, and an optical fiber cable with plug that uses this optical fiber. Thus, the resulting optical fiber cable has superior flame resistance, is resistant to peeling of the optical fiber and coating layers, and is resistant to the occurrence of pistoning phenomenon. The optical fiber may also be composed of a core, a sheath formed around the core, and a protective layer formed around the sheath.

Abstract: A solid-stranding method and apparatus for forming optical cables. Solid-stranding combines buffering and stranding operations, as well as performs the stranding operation while the flextubes are still hot so that they adhere together without additional binders. Optical fibers and/or wires are supplied to an extruder which forms flextubes around individual ones or groups of the optical fibers and/or wires. A central element may be supplied to, and go through, the center of the extruder. A rotating pulling device, such as a caterpillar, helically or in an SZ-manner solid-strands the flextubes around the central element—or solid-strands the flextubes to themselves when no central element is present—as the flextubes cool down. That is, solid-stranding includes buffering and stranding operations that are performed together without a water cooling stage therebetween. Thus, the flextubes adhere together, and may adhere to the central member, thereby forming a solid-stranded composite core.

Abstract: The present invention is directed to a method and apparatus for improved long term signal attenuation performance of fiber optic cable and cable and/or fiber interface components. The improved long term signal attenuation performance of the fiber optic cable is achieved by introducing an additive that will occupy defect sites in the optical fibers, such as deuterium, into materials used in the fiber optic cable, either prior to or during the assembly process. The fiber optic cable casing structure then acts as a reaction chamber so that the additive which has been introduced during the fiber optic cable assembly process will react with the optical fibers so as to occupy defect site locations in the optical fibers. For example, the reaction of silica defect sites with deuterium improves the long term stability of the attenuation characteristics of the fiber optic cables because the number of defect sites available for hydrogen molecules to react with are reduced.

Abstract: Optical fiber cable with at least one optical fiber, with a jacket enclosing each and every optical fiber, and a waterproofing agent, wherein the waterproofing agent comprises a duroplastic support material and a swell powder embedded into the duroplastic support material.

Abstract: A fiber optic cable (10) having a cable core (20) includes fiber optic cable components in the form of buffer tubes (23), a binder (26), and strength members (31). Cable core (20) includes a series of stripes (38) that comprise a mixture of adhesive and water absorbent substances. The water absorbent substance of stripes (38) is operative to swell and thereby block the flow of water in cable (10). Stripes (38) are made by the sequential coating of the adhesive and the water absorbent substances onto the cable whereby the water absorbent substance is propelled into interstices between the cable components. FIGS. 2 and 4.

Abstract: Submarine cables (10, 11) have armouring (18, 19) surrounding the cable core (12), which armouring protects the cable core (12) particularly from mechanical loads. The armouring (18) is designed so that it can withstand the mechanical stresses to which the submarine cable (10, 11) is subjected when laid at the greatest depths provided for. Such armouring (18) is overdimensioned in areas of lesser depths. The invention provides for a submarine cable (10, 11), and a method for the manufacture thereof, a corresponding number of armouring wires (25) used to form the armouring (18) being replaced as necessary by filler strands (31).

Abstract: A rod type polymer preform with radially-varying properties, e.g., refractive index, which is useful for preparing a contaminant-free high-bandwidth graded-index plastic optical fiber (GI-POF) or optical rod lens, can be conveniently prepared by a method which comprises charging a reactive material into a cylindrical reactor, inducing a chemical reaction while rotating the cylindrical reactor, and repeating the charging and reaction procedure two or more times using chemically or compositionally different materials in each of the repeating step.

Abstract: A method and apparatus for fiber optic monitoring of downhole power and/or communication conduits employs optic fibers near such conduits or even within an encapsulation of said conduits to monitor integrity thereof.

Abstract: An optical fiber cable having excellent workability and long-term reliability. The cable comprises at least one optical fiber, a plastic jacket covering the optical fiber or optical fibers, and at least one anti-shrink member embedded in the jacket. The jacket has a longitudinal shrinkage of at most 0.5% when heated at 110° C. for two hours. The cable has a remaining bend with a radius of curvature of at least 100 mm when wound on a 50-mm-radious mandrel and heated at 85° C. for two hours. The deflection of a 30-cm-long cantilever made of the cable is at least 50 mm. In one aspect of the cable, the cable is specified by the conditions of ESt/ESj≧0.7, EIt/EIc≧0.1, and EIc/Mc≦8×106 mm3 (E: Young's modulus; S: cross-sectional area; t: total of anti-shrink members; j: jacket; I: geometrical moment of inertia; c: cable; and M: mass).

Abstract: A fiber optic cable and method of manufacturing the same having at least one optical fiber component, at least one strength member and at least one ultra-low shrinking filament. The at least one ultra-low shrinking filament having a shrinkage of about 0.2% or less when heated and held at about 85° C. for about seven days. At least one strength member and at least one ultra-low shrinking filament being disposed generally between the at least one optical fiber component and a cable jacket. The jacket generally surrounding the at least one optical fiber component, the at least one strength member and the ultra-low shrinking filament. The cable can include an interfacial layer interposed between said at least one optical fiber component and the jacket. Additionally, the cable can be riser or plenum rated.

Abstract: A method for fabricating a drop cable includes the step of providing a strength member including a yarn including a non-conductive and tensile strength fiber. The method includes the step of arranging a core including an optical fiber side-by-side the strength member. The method includes the step of arranging a messenger wire side-by-side the core. The method includes the step of extruding the strength member, the core, and the messenger wire together for sheathing.

Abstract: The present invention discloses an optical fiber cable of diameter D1 (mm) in which an adhesive layer having a thickness of 0.5 to 200 &mgr;m, a primary coating layer and a secondary coating layer are sequentially formed around the outside of an optical fiber in which the outermost layer is composed of vinylidene fluoride polymer; wherein, in the case the diameter of the optical fiber is represented with Da (mm), the thickness of the adhesive layer is represented with d (mm), and Da+2d is represented with D2, then D1/D2=1.2 to 3.5, and an optical fiber cable with plug that uses this optical fiber. Thus, the resulting optical fiber cable has superior flame resistance, is resistant to peeling of the optical fiber and coating layers, and is resistant to the occurrence of pistoning phenomenon. The optical fiber may also be composed of a core, a sheath formed around the core, and a protective layer formed around the sheath.

Abstract: A cable and a cable stripping method which facilities the stripping of an intermediate part of a cable having a cable core covered by a plastic sheath provided around the outer periphery without damaging the cable core. In a cable having a plastic sheath 2 on a cable core 1, either a groove 2a is provided in the inner surface of the plastic sheath 2 extending in the longitudinal direction of the cable. A ripcord 3 is either fitted in the groove 2a or adhered to the inner surface of the plastic sheath. In either case, the position-indicating means 2b showing the position of the ripcord is provided on the outer surface of the plastic sheath 2 at the point where the ripcord 3 is fitted.

Abstract: A fiber optic cable having at least two interfaces being formed by first and second members. Between the interfaces is at least one retention area having an optical fiber component disposed therein. The retention area is disposed generally longitudinally and non-helically relative to an axis of the cable. The cable may also include a cable jacket substantially surrounding the members, a cushioning zone adjacent the optical fiber component, a water-blocking component and/or an interfacial layer. In another embodiment, a fiber optic cable includes a strength group having at least one strength member and an optical fiber being proof-tested to 125 KPSI or greater.

Abstract: Disclosed are an optical fiber cable comprising an optical fiber and at least one covering layer formed on the outer periphery of the optical fiber, at least one layer of the covering layer being made of a material comprising a resin component containing a polyamide polymer, wherein a flexural modulus E upon displacement of 1 mm is within a range from 2 to 15 (N/mm) and the optical fiber cable passes a flame resistance test in accordance with DIN 72551-5, and an optical fiber cable with a plug using the optical fiber. Therefore, they have excellent flame resistance and good handling properties.