Fujikura Limited

Nec Corporation

Fujikara Ltd.

Akito Nishimura

Kunihiko Fujiwara

Yukio Hayashi

Kenji Sasaki

Kazuhiko Kurata

Tatsuya Ohta

Takahiko Sabano

Junichi Sasaki

Takashi Yoshikawa

Ichiro Hatakeyama

Takanori Shimizu

Hirotaka Asada

Akihiro Nakama

Yasuhiro Tamaki

Hiroshi Yokosuka

Tetsuo Nozawa

Terutake Kobayashi

Toshiyuki Tanaka

Yuichi Yoshida

Shota Numata

Takaaki Ishikawa

Kazunori Miyoshi

Ryosuke Kuribayashi

Susumu Nakaya

Takuya Oda

Youichi Hashimoto

Atsushi Takaoka

Kenji Kohara

An optical fiber cable connection structure includes: optical fibers divided into a first bundle and a second bundle in a middle portion of an optical fiber cable in a longitudinal direction of the optical fiber cable; a first fixing portion that integrally fixes the optical fibers of the first bundle in the middle portion; a second fixing portion that integrally fixes the optical fibers of the second bundle in the middle portion; and an optical path that is disposed between the first bundle and the second bundle, holds a space between the first bundle and the second bundle in the longitudinal direction, and optically connects the divided optical fibers to each other.

Optical fiber cable connection structure and method for manufacturing optical fiber cable

A ferrule structure includes a ferrule including a plurality of unit holes, and a plurality of lens units, wherein each lens unit includes a lens part attached to an end part of an optical fiber, and each lens unit is molded from a resin for transmittance an optical signal, and each lens unit is to be inserted in one of the unit holes.

Ferrule structure, method for manufacturing ferrule structure, ferrule, and lens unit

An optical connector system includes: an optical path-changing device including a fiber-holding part that holds a single-mode optical fiber along a first direction, and a reflection surface that reflects an optical signal; and a relay device on a substrate. The substrate includes a grating coupler for inputting/outputting an optical signal in a second direction that is inclined with respect to a direction perpendicular to a surface of the substrate. The optical path-changing device and the relay device each have an input/output surface to/from which the optical signal is inputted/outputted. A first convex lens is disposed on the input/output surface of the optical path-changing device. A second convex lens is disposed on the input/output surface of the relay device.

Optical connector system and optical connection structure

A ferrule with fiber holes includes: a resin-molded portion molded by a resin; and a reinforcement member embedded in the resin-molded portion and that has a smaller linear expansion coefficient than the resin-molded portion. The reinforcement member includes fiber insertion portions that are parallel to the fiber holes. The fiber holes are formed by the resin that entered the fiber insertion portions.

Ferrule, optical-fiber-equipped ferrule, and method for manufacturing ferrule

Disclosed is manufacturing method of an optical module including an optical/electrical converter, a receptacle, and a substrate, the method including: the receptacle that has a guide portion that aligns an optical connector ferrule that holds an end portion of an optical fiber and that has a device accommodating portion that matches with a profile of the optical/electrical converter; a process of accommodating the optical/electrical converter in the device accommodating portion; a process of securing the optical/electrical converter to the receptacle; and a process of electrically connecting to the substrate that electrically connects to the optical/electrical converter the optical/electrical converter secured to the receptacle.

Optical module manufacturing method, optical module receptacle and optical module

Disclosed is a tool for releasing an engaged state in which a receptacle-side engagement section formed on a side surface of a receptacle provided on a substrate is engaged with a connector-side engagement section of an optical connector that is attachable to and detachable from the receptacle. The tool includes: release claws to be inserted into respective gaps, each gap being formed between a member arranged between a pair of engagement side plate parts each being provided with the connector-side engagement section, and each engagement side plate part; and a guide part that comes into opposition with a side surface of the optical connector or the receptacle. By bringing the guide part into opposition with the side surface and sliding the release claws toward the substrate, the engagement side plate parts are spread outward by the release claws and the engaged state is released.

Tool for releasing engaged state of optical connector

Disclosed is an optical-connector fixing member including: an upper plate part for pressing, toward a receptacle provided on a substrate, a ferrule that holds an end section of an optical fiber; and a pair of engagement side plate parts formed so as to extend from the upper plate part toward the substrate, each engagement side plate part having a connector-side engagement section that engages with a receptacle-side engagement section formed on a side surface of the receptacle. An engaged state in which the connector-side engagement section is engaged with the receptacle-side engagement section is releasable by inserting an end section of a tool into a gap between each engagement side plate part and a member that is arranged between the pair of engagement side plate parts, and spreading each engagement side plate part outward.

Optical-connector fixing member, optical connector, and optical connector device

According to an aspect of the apparatus of the present invention, wind generated by a cooling fan blows in a housing, and a port is optically connected with an optical module via an optical fiber. Further, a shielding wall is provided to an optical fiber arranging member, which supports and guides the optical fiber, so as to prevent the optical fiber from being exposed to the wind.

Apparatus having housing in which optical fiber is provided, supporting member, and supporting method

Disclosed is an optical connector ferrule including

Optical connector ferrule

An optical repeater to be arranged between a substrate and an optical connector, the optical repeater includes: a body part including a plurality of optical paths to transmit an optical signal between the substrate and the optical connector, a substrate-side end-face in which one end of each of the optical paths opposes the substrate, and a connector connecting part to connect another end of each of the optical paths to the optical connector, the body part being configured from a material with a greater coefficient of linear expansion than that of the substrate; and a reinforcing member arranged so as to surround the optical paths in a side to the substrate-side end-face, the reinforcing member being configured from a material with a smaller coefficient of linear expansion than that of the body part.

Optical repeater and optical connector device

A ferrule of the present invention includes a positioning mechanism for positioning an optical fiber, and a recess having at least a first inner wall for allowing a front end of the optical fiber portion positioned by the positioning mechanism to protrude, and a second inner wall opposite to the first inner wall. A distance between the first inner wall and the second inner wall is less than or equal to four times the outer diameter of the optical fiber. Adhesive is filled into the recess and cured in a state in which the optical fiber protrudes from the first inner wall and substantially contacts the second inner wall to fix the optical fiber.

Ferrule and ferrule with optical fiber

A ferrule of the invention includes: a ferrule main body having a front edge and a rear edge; a fiber insertion hole into which an optical fiber is to be inserted; a recess provided at a top surface of the ferrule main body, having a reflection surface converting an optical path of a front end of the optical fiber into an optical path of a light emission-launch end provided at a lower surface side of the ferrule main body; a light emission-launch portion provided on the optical path of the light emission-launch end at a lower surface of the ferrule main body; a locating pin provided closer to the front edge than the light emission-launch portion at the lower surface of the ferrule main body; and a recessed portion provided between the locating pin at the lower surface of the ferrule main body and the light emission-launch portion.

Ferrule and optical-fiber-attached ferrule

An optical path-changing member comprises a member main body which is made of a transparent material and in which a reflection section optically connecting the optical fiber to the light input and output end is formed, wherein the reflection section is a first lens having a concave shape when viewed from an incident direction and making light incident on the inside of the member main body from one of the optical fiber and the light input and output end be internally reflected in the member main body and directed to the other of the optical fiber and the light input and output end, a second lens having a convex shape toward the optical component is formed in a light incidence and emission surface of the member main body, that faces the optical component.

Optical path-changing member

Provided is a ferrule which includes a positioning mechanism configured to position an optical fiber having a predetermined outer diameter, and a recess configured for an adhesive to be disposed therein and having a first inner wall from which a front end of the optical fiber portion positioned by the positioning mechanism is protrudable, and a second inner wall opposite to the first inner wall. A distance between the first inner wall and the second inner wall is less than or equal to four times the outer diameter of the optical fiber.

An optical connector body is formed by an optically-transparent resin molding. The optical connector body includes an optical fiber insertion hole formed parallel to a board surface, a wall with which an optical fiber provided at a front of the optical fiber insertion hole contacts, and an internal reflection surface adjacent to and in front of the wall. The internal reflection surface is formed at a bottom surface of a bottomed hole opened from outside in the optical connector body.

Growing community of inventors

Sakura, Japan

Akito Nishimura