Fujikura Limited

Nippon Telegraph and Telephone Corporation

Matsushita Electric Industrial Co., Ltd.

Takashi Yamaguchi

Kazuhiro Takizawa

Kazutoshi Takamizawa

Atsushi Daido

Masahiro Ida

Takaharu Matsuda

Hayato Minami

Hiroyuki Morioka

Tetsuhiro Numata

Tadashi Sasaki

Kunihiko Fujiwara

Daigo Saito

Hiroshi Furukawa

Yuji Aoyagi

Katsushi Nakayachi

Chihiro Suzuki

Keisuke Yoneda

Atsushi Hamaoka

Shigeo Takahashi

Toyohiko Matsuta

Ryuji Matsuura

Hung Huu Luong

Yuuji Aoyagi

Tatsumi Miyazaki

A method of manufacturing an optical connector according to the invention includes: holding a first optical fiber by a pair of holding members at a position apart from an end face of a second end and through both sides thereof in a radial direction, the first optical fiber being provided with a solid refractive index-matching material layer, the refractive index-matching material layer being formed on the end face of the second end on an opposite side of an end face of a first end exposed to a front end of a ferrule; and inserting the first optical fiber into a fiber hole of the ferrule through the first end.

Method of manufacturing optical connector, optical connector, and optical fiber insertion device

A holder includes a base including a reference surface and a slider to which an optical-fiber retainer that retains an optical-fiber can be attached. The slider is movable in a front-rear direction with respect to the base, and at least a portion of the optical-fiber retainer is accommodated between the reference surface and the slider when the optical-fiber retainer is attached to the slider and the optical-fiber retainer is positioned with respect to the reference surface by moving the slider toward a reference surface side.

Holder and optical fiber processing method

An optical connector includes a holding member that has a main body section including a bottom wall section and a pair of side wall sections. The holding member is capable of holding, in a space surrounded by the bottom wall section and the pair of side wall sections, an optical cable including a layer of a fibrous tensile member and an optical connector main body including a fixing section that fixes the holding member. The holding member also includes a pinching member that is configured to pinch the fibrous tensile member between itself and an outer surface of the bottom wall section of the main body section. The fixing section includes a pair of inner surfaces that pinches the main body section and the pinching member from a direction in which the pinching member and the bottom wall section pinch the fibrous tensile member.

Optical connector, and optical connector manufacturing method

An optical fiber splicing tool of the invention include: an optical fiber splicing unit that includes: an optical fiber grasper that grasps a first optical fiber at a mechanical splice; and a guide target that is slidable along a guide provided at a connecting jig that fixes a second optical fiber to be butt-jointed to the first optical fiber; and a connecting jig that includes: a guide that guides the optical fiber splicing unit; and an optical fiber fixer that fixes the second optical fiber. The optical fiber splicing unit provides a first flexure width between one end side of the mechanical splice and the optical fiber grasper, and a second flexure width shorter than the first flexure width is ensured between the other end side of the mechanical splice and the optical fiber fixer when butt-jointing is carried out.

Optical fiber splicing tool and optical fiber splicing method

A method of splicing an optical fiber of the invention splices a first optical fiber cable and an optical fiber in a splicing box, the first optical fiber cable is a drop cable or an indoor cable, the optical fiber is drawn from a second optical fiber cable, the method splices a terminal of the first optical fiber cable and the optical fiber. The method includes: sliding a unit base holding an extended-optical-fiber-attached splice along a rail in a direction in which the unit base approaches a grasper; thereby inserting an inserted optical fiber grasped by the grasper between halved elements of a mechanical splice; and splicing the inserted optical fiber and an extended optical fiber by butt-jointing an end of the inserted optical fiber to the extended optical fiber.

Method of splicing optical fiber and optical fiber splicing device

An optical fiber connection structure is provided, in which a first optical fiber and a second optical fiber, which is optically connected to the first optical fiber via a solid refractive index-matching material which is provided on a tip surface of the first optical fiber, are held and fixed between a base member and a cover member, a tip of the second optical fiber is disposed so as to come into contact with the solid refractive index matching material or separated from the solid refractive index-matching material, and the entire solid refractive index matching material and the tip of the second optical fiber are disposed in a liquid refractive index matching agent which is provided between the base member and the cover member.

Optical fiber connection structure and optical fiber connector

A mechanical splice unit of the invention includes: a mechanical splice having an optical fiber guide groove that is formed at matching surfaces of both a base and a lid in a two-part-divided structure, the mechanical splice being capable of grasping a first optical fiber at one end side of the lid; and an optical fiber splice auxiliary tool used for splice of the first optical fiber that is grasped by the mechanical splice, wherein the optical fiber splice auxiliary tool includes: a mechanical splice grasping portion that holds the mechanical splice; and a guided portion that is slidable along a guide portion formed at a splicing tool to which a second optical fiber to be spliced to the first optical fiber is fixed.

Mechanical splice unit, mechanical splicing tool, and optical fiber splicing method

An optical fiber splicing unit includes: a mechanical splice which aligns optical fibers and puts the optical fibers between half-split elements to splice the optical fibers to each other; a splice holder portion which holds the mechanical splice; fixing member guide portions which respectively guide anchoring fixation members that are respectively fixed to the optical fibers at two sides of the held mechanical splice; anchoring portions which respectively anchor the anchoring fixation members, the anchoring fixation members being respectively guided by the fixing member guide portions and advancing; and a first spacer which abuts one anchoring fixation member and is disposed to be retracted to restrict the advancement of said one anchoring fixation member, said one anchoring fixation member being guided by one fixing member guide portion and advancing.

Optical fiber splicing unit, optical fiber splicing method, and holding member for optical fiber splicing unit

An optical fiber cable having an optical connector, includes: an optical connector assembled on a tip portion of an optical fiber cable, including a ferrule in which an optical fiber protruding from a terminal of the optical fiber cable is inserted and fixed; and a reinforced portion formed by heating and shrinking a heat-shrinkable tube and by solidifying a hot-melt adhesive of an inner portion of the heat-shrinkable tube after melting the hot-melt adhesive so as to integrate a rear end portion of the ferrule, the tip portion of the optical fiber cable which is disposed so as to be separated in a rear side of the ferrule, and the heat-shrinkable tube which accommodates the rear end portion of the ferrule and the tip portion of the optical fiber cable and in which the hot-melt adhesive is disposed in the inner portion of the heat-shrinkable tube.

Optical fiber cable having connector and assembling method thereof

The present invention relates to an optical connector including, a ferrule within which an integrated optical fiber is fixed, a clamp portion disposed at a rear of the ferrule, the clamp portion comprising: a base component and a lid component facing the based component, where the base component and the lid component together are configured to clamp an end portion of the integrated optical fiber and an end portion of a naked optical fiber abutting the end portion of the integrated optical fiber, and a naked optical fiber guide portion disposed at a rear of the clamp portion, where the naked optical fiber guide portion comprises a through hole through which the naked optical fiber can be inserted, and that guides the naked optical fiber to the clamp portion by the through hole.

Optical connector

A coating removal tool used for an optical fiber includes: a base; and a pair of arm members extending in one direction from the base. Also, the arm members, each of which comprises an elastically deformable deformation portion on a base side, and an operation portion which is closer to a tip end side than the deformation portion, contact portions in a wedge shape are provided on the inner sides of operation portions, respectively, the inner sides opposing to each other so that tip edges of contact portions oppose to each other, and grip portions are provided outside the operation portions, respectively, and a coating of an optical fiber is configured to be removed by pulling out the optical fiber in a state where the tip edges of the contact portions are brought into contact with the optical fiber disposed along an extending direction of the arm members.

Coating removal tool used for optical fiber and method of removing coating

A tool for an optical connector including a clamping portion for clamping an optical fiber between clamping elements, the tool including: first and second insertion members, respectively including separately extractable first and second distal ends, wherein the first and second distal ends maintain the clamping elements in an open state by being wedged therebetween from outside the clamping portion, so that the optical fiber is movable between the clamping elements; first and second insertion member operating portions, respectively separately connected to proximal ends of the first and second insertion members, that individually extract the first and second distal ends of the first and second insertion members from between the clamping elements; and a stopper portion against which the optical connector is pressed when the first and second insertion members are extracted from between the clamping elements.

Tool for optical connector and tool equipped optical connector

An optical fiber connecting tool for an optical connector which houses a ferule, a first optical fiber mounted in the ferule and extending from a back end of the ferule, and a second optical fiber abutted and connected to the first optical fiber. The optical connector includes a clamping portion, provided at a back portion of the ferule opposite to a distal end surface for abutment connection and having half split elements, for maintaining connection between the first optical fiber and the second optical fiber by clamping the first optical fiber and the second optical fiber in a space between the half split elements using elastic force of a spring. The optical fiber connecting tool includes an insertion member for maintaining a state in which the second optical fiber is insertable into and removable from the space between the half split elements by being wedged into the space from outside of the clamping portion so as to expand the space between the half split elements, and an insertion member operating portion, having a ring shape, for extracting the insertion member disposed between the half split elements of the clamping portion from the clamping portion.

Growing community of inventors

Sakura, Japan

Takashi Yamaguchi