Abstract: An example fiber optic cable includes an outer jacket having an elongated transverse cross-sectional profile defining a bowtie shape. The outer jacket defines at least first and second separate passages that extend through the outer jacket along a lengthwise axis of the outer jacket. The fiber optic cable includes a plurality of optical fibers positioned within the first passage and a tensile strength member positioned within the second passage. The tensile strength member has a highly flexible construction and a transverse cross-sectional profile that is elongated in the orientation extending along the major axis.

Abstract: According to the present invention, there is provided an optical fiber, an optical fiber ribbon and an optical fiber cable that reduce both the increase in transmission loss and the decrease in strength. According to an embodiment of the present invention, there is provided an optical fiber in which an outer circumferential surface of an optical fiber is coated with a primary coating layer. In the optical fiber, the primary coating layer includes a ultraviolet curable resin, and the ultraviolet curable resin contains 0.05 or more and 0.75 or less parts by weight of a reactive silane coupling agent and 0.05 or more and 0.75 or less parts by weight of an unreactive silane coupling agent.

Abstract: Disclosed is an optical fiber cable that includes optical fibers and a deformable coupling element enclosed within a buffer tube. The coupling element is formed from a deformable yet substantially incompressible material that is capable of releasably and intermittently coupling the optical fibers to the buffer tube in various orientations. The design of the coupling element layer permits coupling of the optical fibers to the buffer tube without the use of a compressive cushioning layer and yet permits localized movement the optical fibers relative to the buffer tube to account for disparate thermal expansion and to accommodate optical fiber placement.

Abstract: Disclosed is an optical fiber cable that includes optical fibers and a deformable coupling element enclosed within a buffer tube. The coupling element is formed from a deformable yet substantially incompressible material and features a number of raised members projecting toward the optical fibers. The design of the coupling element layer permits coupling of the optical fibers to the buffer tube without the use of a compressive cushioning layer. This arrangement distributes the compressive force applied to discrete points along the outer perimeter of the optical fiber element.

Abstract: The present disclosure relates to a fiber optic cable including 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, second and third separate passages that extend through the outer jacket along a lengthwise axis of the outer jacket. The third passage has a transverse cross-sectional profile that is elongated in an orientation extending along the major axis of the outer jacket. The first, second and third passages are generally aligned along the major axis with the third passage being positioned between the first and second passages.

Abstract: Cables have reduced freespace, reduced tube diameters, and reduced strength member diameters. The cables are designed to pass robustness testing such as GR-20 while using smaller amounts of raw materials to produce.

Abstract: Fiber optic ribbon matrix materials having low oligomer content and fiber optic ribbons that contain a matrix prepared from such compositions are disclosed.

Abstract: Disclosed is a cable for use in a concentrating photovoltaic module. The cable includes at least one strand wrapped with an optically pervious or reflective sheath. The pervious sheath is made of a material that exhibits a penetration rate of 90% and survives a temperature of at least 140 degrees Celsius. The reflective sheath is made of a material that exhibits a reflection rate of 95% and survives a temperature of at least 140 degrees Celsius. The cable is used to connect an anode of the concentrating photovoltaic module to a cathode of the same. The material of the reflective sheath may be isolating.

Abstract: Disclosed is an optical fiber cable that includes optical fibers and a deformable coupling element enclosed within a buffer tube. The coupling element is formed from a deformable yet substantially incompressible material that is capable of releasably and intermittently coupling the optical fibers to the buffer tube in various orientations. The design of the coupling element layer permits coupling of the optical fibers to the buffer tube without the use of a compressive cushioning layer and yet permits localized movement the optical fibers relative to the buffer tube to account for disparate thermal expansion and to accommodate optical fiber placement.

Abstract: Disclosed is an optical fiber cable that includes optical fibers and a deformable coupling element enclosed within a buffer tube. The coupling element is formed from a deformable yet substantially incompressible material and features a number of raised members projecting toward the optical fibers. The design of the coupling element layer permits coupling of the optical fibers to the buffer tube without the use of a compressive cushioning layer. This arrangement distributes the compressive force applied to discrete points along the outer perimeter of the optical fiber element.

Abstract: A fiber optic cable assembly includes an optical fiber, a strength layer surrounding the optical fiber and an outer jacket surrounding the strength layer. The outer jacket includes a base material having a Shore D Hardness of at least 85 and liquid crystal polymer embedded in the base material. The liquid crystal polymer constitutes less than 2% of the outer jacket by weight.

Abstract: An optical fiber cable includes an elongated optical element portion having an optical fiber, a pair of tensile strength members and an outer jacket. The optical fiber is composed of one or more plastic coated optical fibers, tight-buffered optical fibers or optical ribbon fibers. The pair of tensile strength members is arranged in parallel at both sides of the optical fiber in a width direction of the optical fiber. The outer jacket covers outer circumferences of the optical fiber and the pair of tensile strength members. A frictional coefficient of the outer jacket is equal to or less than 0.20. Shore D hardness of the outer jacket is equal to or more than 60.

Abstract: The invention relates to an optical backplane, comprising a plurality of component connectors and at least two interconnections configurations interconnecting the component connectors. The at least two interconnections configurations allow a dynamical selection of an interconnections configuration interconnecting the component connectors.

Abstract: A method and spacer for assembling flexible optical waveguide ribbons and assembled stack of such ribbons. The method includes the steps of: providing at least two optical waveguide ribbons and a spacer, which includes at least two calibrated spaces; positioning a ribbon stack in the spacer, where the ribbon stack includes the at least two optical waveguide ribbons stacked on top of each other; constraining positioned ribbon stack in one of the calibrated spaces; and fixing constrained ribbon stack in the calibrated spaces.

Abstract: Disclosed is an improved optical fiber that employs a novel coating system. When combined with a bend-insensitive glass fiber, the novel coating system according to the present invention yields an optical fiber having exceptionally low losses. The coating system features (i) a softer primary coating with excellent low-temperature characteristics to protect against microbending in any environment and in the toughest physical situations and, optionally, (ii) a colored secondary coating possessing enhanced color strength and vividness. The improved coating system provides optical fibers that offer significant advantages to single-fiber drop cables, such as those employed for Multiple Dwelling Unit (MDU) applications.

Abstract: An illumination system generating light having at least one wavelength within 200 nm a plurality of nano-sized structures (e.g., voids). The optical fiber coupled to the light source. The light diffusing optical fiber has a core and a cladding. The plurality of nano-sized structures is situated either within said core or at a core-cladding boundary. The optical fiber also includes an outer surface. The optical fiber is configured to scatter guided light via the nano-sized structures away from the core and through the outer surface, to form a light-source fiber portion having a length that emits substantially uniform radiation over its length, said fiber having a scattering-induced attenuation greater than 50 dB/km for the wavelength(s) within 200 nm to 2000 nm range.

Abstract: A process for fabricating a fiber composite underbody panel for a vehicle begins by laying-up a first fiber composite sheet on a suitable form or tool. Current carrying wiring that is normally carried by the floor is laid in place on the first sheet, with the ends of the wires extending beyond the edges of the sheet. The wires are shielded to prevent the radiation of fields therefrom into the interior of the vehicle. Fiber optic cable is used to carry signals. A second fiber composite sheet is then laid-up on the first sheet. The two sheets with the embedded wires are placed in a heated mold to form the sheets into the desired finished shape and configuration. The ends of the copper wires and the fiber optic cables are then terminated by connectors so that they may be later coupled to the circuitry of the vehicle.

Abstract: A telecommunications cable including a main cable having a central buffer tube enclosed within a cable jacket and a ribbon stack positioned within the buffer tube. The main cable includes a cut region where a slot has been cut through the cable jacket and the buffer tube to provide access to the ribbon stack during manufacture of the telecommunication cable. A tether branches from the main cable at the cut region. The tether includes an optical fiber that is optically coupled to an optical fiber of the ribbon stack.

Abstract: The present invention provides an optical fiber in which the transmission loss increase is suppressed even under a high-humidity condition or under a water-immersed condition. A colored optical fiber (22) according to an embodiment of the present invention is a colored optical fiber (22) formed by applying a colored layer to an optical fiber (14) including a glass optical fiber coated with at least a double-layered coating layer of a soft layer and a hard layer, and the ratio of thermal expansion coefficient between the coating layer after the colored layer of the colored optical fiber (22) is applied and the coating layer of the optical fiber (14) before the colored layer is applied is 0.87 or more.

Abstract: Embodiments of the present invention include an optical fiber cable for use in a plenum. The cable comprises a tube, at least one optical fiber ribbon positioned within the tube, the optical fiber ribbon having a width (W), a jacket around the tube, the jacket having an outer diameter (D) and a limited oxygen index (LOI) of approximately at least 65%, at least two longitudinal strength members positioned between the tube and an outer surface of the jacket; and a yarn positioned between the tube and the jacket, wherein the ratio of the width (W) of the optical fiber ribbon and the outer diameter (D) of the jacket is approximately at least 0.25.

Abstract: The present disclosure relates to a fiber optic cable including 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: Disclosed is an improved optical fiber that employs a novel coating system. When combined with a bend-insensitive glass fiber, the novel coating system according to the present invention yields an optical fiber having exceptionally low losses. The coating system features (i) a softer primary coating with excellent low-temperature characteristics to protect against microbending in any environment and in the toughest physical situations and, optionally, (ii) a colored secondary coating possessing enhanced color strength and vividness. The improved coating system provides optical fibers that are useful in buffer tubes and cables having relatively high filling coefficients and fiber counts.

Abstract: Disclosed is an improved optical fiber that employs a novel coating system. When combined with a bend-insensitive glass fiber, the novel coating system according to the present invention yields an optical fiber having exceptionally low losses. The coating system features (i) a softer primary coating with excellent low-temperature characteristics to protect against microbending in any environment and in the toughest physical situations and, optionally, (ii) a colored secondary coating possessing enhanced color strength and vividness. The secondary coating provides improved ribbon characteristics for structures that are robust, yet easily entered (i.e., separated and stripped). The optional dual coating is specifically balanced for superior heat stripping in fiber ribbons, with virtually no residue left behind on the glass. This facilitates fast splicing and terminations.

Abstract: Disclosed is an optical fiber cable that includes optical fibers and a deformable coupling element enclosed within a buffer tube. The coupling element is formed from a deformable yet substantially incompressible material and features a number of raised members projecting toward the optical fibers. The design of the coupling element layer permits coupling of the optical fibers to the buffer tube without the use of a compressive cushioning layer. This arrangement distributes the compressive force applied to discrete points along the outer perimeter of the optical fiber element.

Abstract: Disclosed is an optical fiber cable that includes optical fibers and a deformable coupling element enclosed within a buffer tube. The coupling element is formed from a deformable yet substantially incompressible material that is capable of releasably and intermittently coupling the optical fibers to the buffer tube in various orientations. The design of the coupling element layer permits coupling of the optical fibers to the buffer tube without the use of a compressive cushioning layer and yet permits localized movement the optical fibers relative to the buffer tube to account for disparate thermal expansion and to accommodate optical fiber placement.

Abstract: An illumination fiber optic ribbon includes optically-transmissive fibers which are adjacent to each other. At least two of the optically-transmissive fibers are twisted together to form a twisted segment. Where the two optically-transmissive fibers are not twisted forms a non-twisted segment. The twisted segments and non-twisted segments alternate along the length of the ribbon. Bends are disposed along the twisted segment and are formed by twisting adjacent optically-transmissive fibers. A light source is connected to one or both ends of the optically-transmissive fibers. The light source emits a light flux into the ribbon so that light emits from the bends in the twisted segment.

Abstract: In order to improve a cable, comprising an inner cable body, in which at least one conductor strand of an optical and/or electrical conductor runs in the longitudinal direction of the cable, an outer cable sheath, enclosing the inner cable body and lying between an outer sheath surface of the cable and the inner cable body, and at least one information carrier unit, disposed within the outer sheath surface of the cable such that the cable also comprises a shielding, the invention proposes that the information carrier unit having an antenna unit lying in an antenna surface running approximately parallel to the longitudinal direction of the cable, by the antenna surface running at a distance from an electrical shielding of the cable and by providing, between the antenna surface and the shielding, a spacing layer, in which the electromagnetic field that couples to the antenna unit and passes through the antenna surface can extend between the antenna unit and the shielding.

Abstract: Signals propagating on an aggressor communication channel can cause interference in a victim communication channel. A sensor coupled to the aggressor channel can obtain a sample of the aggressor signal. The sensor can be integrated with or embedded in a system, such as a flex circuit or a circuit board, that comprises the aggressor channel. The sensor can comprise a dedicated conductor or circuit trace that is near an aggressor conductor, a victim conductor, or an EM field associated with the interference. An interference compensation circuit can receive the sample from the sensor. The interference compensation circuit can have at least two operational modes of operation. In the first mode, the circuit can actively generate or output a compensation signal that cancels, corrects, or suppresses the interference. The second mode can be a standby, idle, power-saving, passive, or sleep mode.

Abstract: Generic tow lead-in for streamers providing communication between the seismic systems and the streamers, consisting of at least four wire power quad, at least four multimode optical fibers and at least one signal pair, where the at least one signal line do not utilize a screen.

Abstract: The viewing angle dependence of the ? characteristic in a CPA mode liquid crystal display device is reduced in a desired direction. The liquid crystal display device is usable for a use in which a viewing angle characteristic in direction D1 parallel to a display plane needs to be higher than a viewing angle characteristic in another direction D2 parallel to the display plane. An electrode of the liquid crystal display device includes a solid area formed of a conductive film and a non-solid area with no conductive film. The solid area of the electrode includes a plurality of unit solid areas, above each of which a liquid crystal domain exhibiting a radially inclined orientation state is formed.

Abstract: Disclosed are fiber optic assemblies having at least one optical fiber and a water-swellable powder within a tube and/or cavity and methods for making the same. Fiber optic assemblies of the present invention use relatively low-levels of water-swellable powder while still effectively blocking the migration of tap water and/or saline solutions of 3% by weight along the tube and/or cavity. Furthermore, cleaning of the optical fibers is not necessary before connectorization like with conventional fiber optic cables that use a gel or grease. Generally speaking, at least some of the water-swellable powder is transferred to the inside surface of the tube, cavity, optical fiber or the like; rather, than being a loose powder that is able to migrate within the tube or cavity. Moreover, the existence of water-swellable powder within the fiber optic assembly or cable is nearly transparent to the craft since relatively low-levels are possible.

Abstract: Disclosed is a buffer tube that possesses a higher buffer-tube filling coefficient. Optical fibers enclosed within the buffer tube demonstrate improved attenuation performance when subjected to temperature variations between about ?40° C. and 70° C. The buffer tube is suitable for deployments requiring mid-span access.

Abstract: A fiber optic cable assembly with a floating tap is disclosed, wherein the assembly comprises a fiber optic cable having a cable fiber assembly, such as in the form of a ribbon stack. The assembly includes at least one network access point (NAP) for accessing at least one cable fiber in the cable fiber assembly and at least one strength area for example a strength member. At least one cable fiber is extracted from the cable fiber assembly and held by a transition assembly. A buffer conduit loosely contains the at least one cable fiber and guides it to an intermediate buffer conduit, which in turn guides the at least one cable fiber to a splice tube. The intermediate buffer conduit can translate relative to the splice tube. At least one tether fiber is spliced to the at least one cable fiber. Alternatively, the at least one cable fiber has sufficient length to serve as the at least one tether fiber so that splicing to another fiber is not required. Each strength member is covered by a movable member.

Abstract: Amono-coated optical fiber that has a bending loss characteristic in which an optical loss increase at a bending radius 13 mm is 0.2 dB/10 turn or less, an optical fiber ribbon that includes two-dimensionally disposed resin portions for bonding the adjacent 2-fiber mono-coated optical fibers in plural places, the resin portions being disposed apart from each other in the longitudinal direction of the optical fiber ribbon and an optical fiber cable that includes a cable core portion that stores twisting of plural units where the mono-coated optical fibers constituting the optical fiber ribbon are collected.

Abstract: The present disclosure is generally directed to a fiber optic distribution cable assembly having an interior portion and an exterior portion. A distribution cable includes a plurality of optical fibers disposed within the interior portion and at least one predetermined mid-span access location positioned along a length of the distribution cable to provide access from the exterior portion to the interior portion. At least one optical fiber of the distribution cable is accessed and terminated from the distribution cable within the interior portion of the distribution cable. A tether having a first end is attached to the distribution cable through the mid-span access location. The tether has at least one optical fiber optically connected to the at least one terminated optical fiber of the distribution cable at a location within the interior portion of the distribution cable.

Abstract: An optical fiber coil and a production method therefor reduce the likelihood of optical transmission loss due to stress or temperature changes at low cost. Plural single optical fibers are arranged in parallel and are integrally covered with a covering portion so as to form an optical fiber ribbon, and the optical fiber ribbon is wound into a coiled state.

Abstract: An optical fiber branch cable is provided that comprises a branch portion disposed stably with respect to a multi-core optical fiber cable of a trunk line from which branching is performed, that is excellent in handleability as a cable, and that exhibits high workability. In the optical fiber branch cable of the invention, in a middle of a multi-core optical fiber cable 2 of a trunk line, a branch portion 11 is disposed. The branch portion 11 has: a base member 16 which is attached so as to cover a tensile-strength wire 9 in a portion where a cable jacket 10 of the multi-core optical fiber cable 2 is removed away; a multi-core optical connector 30 which is connected to the tip end of a tape unit 4 drawn out from the multi-core optical fiber cable 2; an extra-length housing portion 18 which houses an extra length of the tape unit 4 to which the multi-core optical connector 30 is connected; and a connector attaching portion 19 to which the multi-core optical connector 30 is attachable in a plural number.

Abstract: A splittable optical fiber ribbon has a decreased propensity for fiber fallout along a longitudinal split. Fibers adjacent to a split location, called border fibers, have increased bond strength between their ink-coating and a surrounding matrix material. The bond strength is increased by first partially curing an ink that covers the border fibers, coating the partially-cured fibers with a matrix material, and then substantially fully curing the ink and the matrix material substantially simultaneously. The ribbon may include one or more grooves to enhance splitting the ribbon into subsets.

Abstract: The present invention enables putting much more optic fibers per cable, such as for example even 1,000 or 10,000 times more than the prior art, with an increase in cost that is orders of magnitude smaller. One of the most important variations is using multi-fiber flexible flat jackets that can move freely within the cable's pipe, preferably only in one direction. Preferably at certain intervals (for example every few dozen centimeters or more or 1 or 2 meters or more) the flat jackets are preferably stitched together to each other and/or for example glued and/or otherwise coupled to each other in a way that preferably does not apply pressure to the optic fibers, and preferably are also coupled, preferably at the stitch position, also to the cable, in order to prevent undesired sliding movement of the jackets against each other and/or against the pipe and/or rotating out of orientation.

Abstract: Polymer-coated transmission media having water-blocking material embedded in the outer surface of the transmission media prevents water penetration into the transmission media and reduces the overall diameter of a cable made from the transmission media by eliminating a water-blocking tape layer in the cable. The outer surface of the transmission media is a polymer whose outer surface is embedded with a water-blocking material. The water-blocking material is applied before the polymer is cured. The transmission media may be any known type of optical media, which guides a light within the optical media. In various embodiments, optical fibers, buffered optical fibers and fiber ribbons are used as the transmission media.

Abstract: A disclosed waveguide film cable includes a waveguide formed on a film. The waveguide film cable includes a coating film made of a material having a Young's modulus smaller than or equal to the Young's modulus of a material that forms the film and/or the waveguide and coats partially or entirely the film and/or the waveguide.

Abstract: An optical probe for non-invasively measuring an analyte property in a biological sample of a subject, comprises a plurality of illumination fibers that deliver source light from an optical probe input to a sample interface, a plurality of collection fibers that deliver light returned from the sample interface to an optical probe output, and wherein the illumination and collection fibers are oriented substantially perpendicular to the sample interface and the illumination and collection fibers are stacked in a plurality of linear rows to provide a stack of fibers arranged in a rectangular pattern. The optical probe is amenable to manufacturing on a scale consistent with a commercial product. Methods of making such probes are described.

Abstract: A process for manufacturing an optical fiber includes: drawing an optical waveguide from a glass preform; applying a layer of a first coating material on the optical waveguide; curing the first coating layer material to obtain a first coating layer; applying a layer of a second coating material onto the first coating layer; applying a layer of colored coating material onto the second coating layer; curing the second coating material and the colored coating material in a single step to obtain a second coating layer superposed on the first coating layer and a colored coating layer superposed on the second coating material layer, the obtained second coating layer having an elastic modulus higher than that of the first coating layer and lower than that of the colored coating layer. An optical fiber and an apparatus for producing it are also provided.

Abstract: An optical fiber ribbon is capable of branching by means of any tool. The optical fiber ribbon is comprised of a plurality of optical fibers running in parallel, each of the optical fibers having an allowable radius of curvature; a blanket sheath totally covering the plurality of the optical fibers; one or more concavities formed at any one or more intermediates among the optical fibers; and slits respectively arranged in series at a regular interval along the concavities, the slits penetrating the blanket sheath and allowing the tool to be inserted and the blanket sheath to split by means of movement of the tool along the concavities. The length of each slit prior to insertion of the tool is so determined that flexures of the optical fibers induced by the tool widening the slits do not exceed the allowable radius of curvature.

Abstract: A telecommunications cable including a main cable having a central buffer tube enclosed within a cable jacket and a ribbon stack positioned within the buffer tube. The main cable includes a cut region where a slot has been cut through the cable jacket and the buffer tube to provide access to the ribbon stack during manufacture of the telecommunication cable. A tether branches from the main cable at the cut region. The tether includes an optical fiber that is optically coupled to an optical fiber of the ribbon stack.

Abstract: A fiber optic cable includes at least one optical fiber, at least one strength member, armor components, and a cable jacket. The cable jacket has a cavity with a generally rectangular cross-section with the armor components disposed on opposite sides of the cavity.

Abstract: A composite cable that is able to prevent both the unfastening of the cable end from the connector and the occurrence of the bending distortion of the optical fiber, to both of which the expansion and shrinkage of the overall sheath is responsible, is provided. The composite cable comprises a stranded wire that is a strand of a plurality of insulated conductors each of which is a conductor with insulation covering thereon, an optical fiber ribbon that has a plurality of optical fibers parallelly-arranged in a row, and an overall sheath that covers the stranded wire and the optical fiber ribbon in a bundle, wherein the composite cable has a deterrent positioned on outer side of the stranded wire and the optical fiber ribbon parallelly-arranged in a row along the width direction of the overall sheath for deterring expansion and shrinkage of the overall sheath.

Abstract: A fiber optic cable assembly with a floating tap is disclosed, wherein the assembly comprises a fiber optic cable having a cable fiber assembly, such as in the form of a ribbon stack. The assembly includes at least one network access point (NAP) for accessing at least one cable fiber in the cable fiber assembly and at least one strength area for example a strength member. At least one cable fiber is extracted from the cable fiber assembly and held by a transition assembly. A buffer conduit loosely contains the at least one cable fiber and guides it to an intermediate buffer conduit, which in turn guides the at least one cable fiber to a splice tube. The intermediate buffer conduit can translate relative to the splice tube. At least one tether fiber is spliced to the at least one cable fiber. Alternatively, the at least one cable fiber has sufficient length to serve as the at least one tether fiber so that splicing to another fiber is not required. Each strength member is covered by a movable member.

Abstract: When a glass fiber and an inner fiber coating layer are to be attached to a connector by removing an outer fiber coating layer while leaving the inner fiber coating layer as it is, a collective coating and the outer fiber coating layer can be removed at a stretch so that the inner fiber coating layer can easily and satisfactorily be exposed. In the ultraviolet curable resin coating layer of a coated optical fiber 17 of an optical fiber ribbon 11 for wiring of equipment, the inner fiber coating layer 15 has a Young's modulus of 600 MPa to 1000 MPa, and the outer fiber coating layer 16 has a Young's modulus of 10 MPa to 300 MPa. The material of the outer fiber coating layer 16 is made by mixing 100 weight parts of base resin, 1-30 weight parts of silicone-based additive, and 0.5 to 40 weight parts of long chain fatty acid ester compound, wherein the base resin is a material made of a urethane metha acrylate oligomer, a mono-functional or multi-functional reactive dilution monomer, and an optical initiator.

Abstract: When a glass fiber and an inner fiber coating layer are to be attached to a connector by removing an outer fiber coating layer while leaving the inner fiber coating layer as it is, a collective coating and the outer fiber coating layer can be removed at a stretch so that the inner fiber coating layer can easily and satisfactorily be exposed. In the ultraviolet curable resin coating layer of a coated optical fiber 17 of an optical fiber ribbon 11 for wiring of equipment, the inner fiber coating layer 15 has a Young's modulus of 600 MPa to 1000 MPa, and the outer fiber coating layer 16 has a Young's modulus of 10 MPa to 300 MPa. The material of the outer fiber coating layer 16 is made by mixing 100 weight parts of base resin, 1-30 weight parts of silicone-based additive, and 0.5 to 40 weight parts of long chain fatty acid ester compound, wherein the base resin is a material made of a urethane metha acrylate oligomer, a mono-functional or multi-functional reactive dilution monomer, and an optical initiator.