Sumitomo Electric Industries, Limited

Sei Optifrontier Co., Ltd.

Toshihiko Honma

Tsutomu Watanabe

Yoshikyo Tamekuni

Yukihiro Yokomachi

Masahiro Shibata

Masahiro Hasegawa

Masakazu Fukuda

Kiyoshi Nakazawa

Hidenori Takahashi

Hideyuki Kinpara

Isao Nakagaki

An optical fiber cutting device is configured so that a disk-like blade member is moved in a state, in which the blade member is pushed against a glass fiber part of an optical fiber, to form a flaw on a surface of the glass fiber part. The blade member is turned by a feed roller in synchronization with a movement operation of the blade member that rotates by a contact friction force generated when the blade member is put into contact with a contact member fixedly provided halfway a movement path of the blade member.

Optical fiber cutting device

An optical connector, which is capable of enhancing fittability into a cabinet, or the like on account of compactification and also avoiding problems of an increase of bead loss, a breakage, etc. of an optical fiber, can be provided. In an optical connectorthat houses a fusion-spliced portion, in which a short optical fiberthat is fitted previously to an optical connector ferruleand a coated optical fiberare fusion spliced together and holds the fusion-spliced portiontherein, one end of a protection sleevemade of the thermal shrinkage material that externally fixes the fusion-spliced portionis coupled to the optical connector ferrule. An air escape holeffor escaping an air, which is confined in the protection sleevewhen the protection sleeveis thermally shrunk and adhered closely to the optical connector ferrule, to the outside is formed in the optical connector ferrule

Optical connector

An optical connector in which the housing property into a cabinet or the like can be enhanced because of the compactification, and which can solve problems of the increase of the bending loss of an optical fiber, the breakage, and the like is obtained. In an optical connector which houses and holds a fusion spliced portion where a short optical fiber previously fitted to an optical connector ferrule is fusion-spliced with a coated optical fiber, one end of a protection sleeve which armors the fusion spliced portion is coupled to the optical connector ferrule. As a result, the length of the protection sleeve which covers the fusion spliced portion so that the fusion spliced portion is positioned at the middle can be set with reference to an end portion of the optical connector ferrule. Therefore, the protection sleeve can be shortened, and compactification of the optical connector can be realized.

Optical fiber jacket stripper

A holder capable of protecting an optical connector ferrule from an external shock, or the like and executing a fusion-splice of a short optical fiber not to take out the optical connector ferrule from the holder is obtained. A holder for holding a connector plug equipped with an optical connector ferrule to which a short optical fiber is fitted and a plug frame for covering an outer periphery of the optical connector ferrule therein, wherein, when the short optical fiber together with the holder is fitted to a fusion splicing apparatus that fusion-splices the short optical fiber and other coated optical fiber, the short optical fiber extended from the plug frame is positioned in a fusion position.

Holder, fusion-splicing apparatus, and manufacturing method of optical connector

An optical fiber holder automatically corrects the tendency of a buffered optical fiber to bend, can position an optical fiber so as to make contact with the V groove, and can readily perform an operation for positioning the optical fiber. The optical fiber holder includes a base stage having a groove configured and arranged to accommodate a buffered optical fiber or an optical fiber ribbon; and a lid that is disposed above the groove. The lid is openable and closeable and has a restraining member. The restraining member includes a contacting part configured and arranged to bend the buffered optical fiber or optical fiber ribbon.

Optical fiber holder

Connector holder

An optical fiber connection jig which is small in size, lightweight and excellent in portability, simple in structure, can be produced at a low cost, and enables an optical fiber-connecting operation at the field to be carried out easily and positively. The optical fiber connection jig includes a jig body having wedge pieces which are fitted respectively into wedge insertion slits in a splice member by a grasping operation for a pair of left and right grasp frames opposed to each other with the splice member disposed therebetween, thereby forcibly expanding an optical fiber holding groove, and a fiber insertion guide which is mounted on the jig body, and guides a coated optical fiber generally onto a center axis of the optical fiber holding groove by a coated fiber guide groove extending in a direction of the center axis Yof the optical fiber holding groove.

Optical fiber connecting tool

A fiber cleaver is provided which is capable of cleaving a glass fiber portion in a short time without depending on a particular working environment. The fiber cleaver comprises a holding member for holding a glass fiber portion of an optical fiber, a cutter for affording a scratch to the glass fiber portion which is held by the holding member, an elastic member or spring for moving the cutter, and a slider engaging member for maintaining the elastic member or spring in a state of elastic deformation. Also provided is a fiber cleaver comprising a holding member for holding the glass fiber portion of an optical fiber, a cutter for affording a scratch to the glass fiber portion held by the holding member, and a holder engaging part for holding a holder that holds an optical fiber at its part having a protective covering. The holder engaging part has a first holder engaging member for pushing and holding the holder in a direction parallel to a movement direction of the cutter.

Growing community of inventors

Kanagawa, Japan

Toshihiko Honma