Nippon Telegraph and Telephone Corporation

Fujikura Limited

Tetsuhiro Numata

Kazuhiro Takizawa

Takashi Yamaguchi

Kazutoshi Takamizawa

Atsushi Daido

Hayato Minami

Tadashi Sasaki

Masahiro Ida

Hiroyuki Morioka

Chihiro Suzuki

Atsushi Hamaoka

Shigeo Takahashi

Tatsumi Miyazaki

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

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 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

Growing community of inventors

Tsukuba, Japan

Tetsuhiro Numata