This mechanical splice unit is equipped with: a mechanical splice with a two part structure comprising a base and a lid with an optical fiber guide groove formed in their mating surfaces and with a first optical fiber capable of being gripped at one end of the lid; and an optical fiber connection use auxiliary tool ...

An optical fiber cable includes: a slotted core 4 which houses and holds an optical fiber 1 in a rectilinear slotted groove 3 disposed along a longitudinal direction of the cable; a cylindrical sheath 6 covering the entire slotted core 4; a rectilinear hanger line 8 integrally provided continuously to the sheath 6; ...

Disclosed is an optical fiber core which comprises a primary layer and a secondary layer that are laminated on a bare optical fiber. The primary layer is obtained by curing an ultraviolet curable resin composition which contains a first silane coupling agent that is incorporated into the resin skeleton and a second ...

A manufacturing method and apparatus for manufacturing a coated optical fiber which has a superior surface smoothness of a resin coating and which can be coated with a colored ink with high coating performance. In the method including the steps of making a coated optical fiber (10) by forming an outer coating lay...

Disclosed is an optical fiber tape core wire comprising a plurality of optical fibers (1) arranged in parallel and a taping material (6) that coats the plurality of optical fibers (1) and makes a tape thereof. The plurality of optical fibers (1) are coated with a semi-transparent colored layer (5) of a different col...

ABSTRACT OPTICAL FIBER COATING REMOVAL DEVICE, EXTERNAL DEVICE, OPTICAL FIBER COATING REMOVAL SYSTEM, AND OPTICAL FIBER COATING REMOVAL METHOD An optical fiber coating removal device which heats a coating of an optical fiber with a heater and removes the coating with a blade includes a communicator which receives ...

An optical fiber cable 1 comprising a multi-core optical fiber 30 including a plurality of cores 32A-32D has arrangement information associated with the multi-core optical fiber 30, wherein the arrangement information is associated with the arrangement of the multiple cores 32A-32D in the cross section of the multic...

The present invention attains a fiber assembly that has a higher degree of freedom regarding combinations of orientations of multicore fibers than conventionally or that can be manufactured more easily than conventionally. A plurality of multicore fibers (MF1-MFna) are bundled so that multicore fibers each having a ...

An optical fiber ribbon according to the present invention is provided with: a plurality of optical fibers arrayed along an array direction that is perpendicular to the lengthwise direction; and a plurality of joint sections. The plurality of joint sections are each formed between a pair of the optical fibers that a...

An optical cable according to the present disclosure includes a plurality of optical fiber units. Each of the optical fiber units has a plurality of intermittently connected optical fiber tapes. In a cross-section, at least one of the optical fiber units is characterized in that, assuming that the midpoints of optic...

This optical fiber manufacturing method includes a pre-treatment step (P2) of supplying electricity to a spinning furnace (110) to cause T/V to decrease over time along a quadratic function in which the maximum value is Ttarget/Vtarget so that T/V becomes Ttarget/Vtarget, in a case where: T and V are taken to be, re...

An optical fiber cable (1) is provided with a plurality of optical fibers (11), a presser winding (20) which envelops the plurality of optical fibers (11) and which is in contact with the optical fibers (1) positioned on the outermost periphery, and a sheath (30) covering the presser winding (20), wherein: the sheat...

An optical fiber cable (1) is characterized in that: a plurality of optical fibers (10) having a geometric microbending loss characteristic FµBL_G and an optical microbending loss characteristic FµBL_?ß is accommodated in the internal space (3S) of a sheath (3); and when specify the cable characteristics Dc of the o...

An optical fiber cable (1) is characterized in that: a plurality of optical fibers (10) having a geometric microbending loss characteristic FµBL_G and an optical microbending loss characteristic FµBL_O is accommodated in the internal space (3S) of a sheath (3); and when using the void ratio a of the internal space (...

[Problem] To provide a novel method for winding a wire. [Solution] A housing unit according to the present disclosure comprises a wire and a housing body for housing the wire. In the housing body, a plurality of winding regions in which the wire is wound are provided in a circumferential direction. The wire is wound...

An optical fiber ribbon (1) comprises five or more optical fibers (20) and a plurality of connecting parts (10) which connect two adjacent optical fibers. The plurality of connecting parts (10) are disposed intermittently in the longitudinal direction (X direction) and in an arrangement direction (Y direction). The ...

This optical fiber cable comprises a core, a sheath that houses the core, and a rip cord that is disposed between the core and the sheath. The core has a plurality of optical fibers, and a press-wrapping tape that wraps the plurality of optical fibers. In the press-wrapping tape, a recess recessed inward in the radi...

An optical fiber fusion splicer of the invention includes a replaceable groove-formed unit having a plurality of first positioning grooves and a plurality of second positioning grooves, a lighting part, a lens, a camera, a pair of discharge electrodes, a high-voltage-generating circuit, a movable stage, an image pro...

This optical fiber wire comprises: a bare wire part that has a core and a cladding and that extends in an axial direction; a primary layer that covers the bare wire part; and a secondary layer that covers the primary layer. The Young’s modulus of the primary layer is in the range of 0.10-0.45 MPa. The pull-out force...

An optical fiber cable (1A) comprises: a core (10) that has optical fibers (11); a restricting member (20) that is longitudinally attached to the core (10) and covers the core (10); a sheath (40) that covers the restricting member (20); and a ripcord (60) that is positioned between the sheath (40) and the core (10),...

[Problem] To improve the performance of drawing a wire rod without the need of preparing a structure such as an arm. [Solution] A packing unit according to the present disclosure comprises a wire rod and a packing body that accommodates the wire rod therein. The packing body can be transformed into a first configura...

A preform (1P) for optical fibers according to the present invention has a refractive index profile that contains a fluctuation region in which a fluctuation (20), wherein the refractive index increases or decreases, is repeated; at least a part of the fluctuation region is contained in an outer region (OR) that is ...

An optical fiber cable (1) comprises: a core (10) that includes optical fibers (11); a first protective layer (20) that covers the core (10); and a second protective layer (50) that covers the first protective layer (20). At least one integrated region (20a) that is in pressure-contact with or fixed to the second pr...

An optical cable according to the present disclosure includes: a 5 plurality of optical fiber units each having a fiber group formed by a plurality of optical fibers, wherein the plurality of optical fiber units are twisted in an S-Z configuration, at least one optical fiber unit of the plurality of optical fibe...

Optical fiber units constituting an optical fiber assembly and each formed by stacking a plurality of optical fiber ribbons include, in some cross section of the optical fiber assembly, a first fiber unit located on a neutral line and a second fiber unit located farthest from the neutral line. Regarding the sine val...

In this optical fiber unit constituting an optical fiber assembly and being obtained by layering a plurality of optical fiber ribbons, a plurality of inner-layer fiber units positioned on the radial inside of the optical fiber assembly, and a plurality of outer-layer fiber units positioned on the radial outside of t...

A fusion splicer includes: a device main body including a heating unit that heats an optical fiber; a pedestal member including a coating holding part that holds a coating portion of the optical fiber; a clamp member including a coating clamp that clamps the coating portion between the coating holding part and the c...