Other

Nippon Telegraph and Telephone Corporation

Ntt Electronics Corporation

Swcc Showa Cable Systems Co., Ltd.

Nippon Telegraph and Telephone Corporation and Seikoh Giken Co., Ltd.

Shin Sumida

Koichi Arishima

Takashi Yoshida

Masahiro Nakajima

Masaru Kobayashi

Kenji Yokoyama

Keiko Shiraishi

Takumi Yoshida

Yukinori Miyake

Shinichi Iwano

Mamoru Hirayama

Tomotaka Murase

Shuichi Yanagi

Makoto Nakamura

Hiroshi Takahashi

Kouji Minami

Junji Taira

Yasuyuki Inoue

Ryo Nagase

Motohaya Ishii

Katsunari Okamoto

Takeshi Uchiyama

Motohiro Nakahara

Toshiaki Nakano

Akimasa Kaneko

Senichi Suzuki

Michiyuki Amano

Fumihiro Ebisawa

Fumiaki Hanawa

Kuninori Hattori

Noboru Ishihara

Yoshito Shuto

Kenichi Muta

Yuichi Morishita

Tomohiro Shimada

Yuji Shinagawa

Hiroaki Yamada

Yasuaki Ohkubo

Shunichi Tohno

Kenji Yagi

Masanobu Okayasu

Syuichi Yanagi

Mituo Itoh

Takeshi Kurosaki

Ken-ichi Muta

Takashi Tadokoro

Tatsuhito Shinozaki

Ken-Ichi Muta

Provided is a device for removing coating on an optical fiber. The device has a cutting depth limiting surface disposed on a receiver body and a cutting blade attached between a pusher body and a fixing block. The cutting blade is made from plastics and has a specified bending elasticity. An optical fiber is inserted between the cutting blade and the limiting surface. During operation, the cutting blade cuts into a covering on the optical fiber. A high precision in arranging the cutting blade is not required.

Device for removing coating on optical fiber

An optical functioning component has a tubular housing with a front end side having substantially the same shape as that of a front end of a removable plug housing of an optical connector plug. A rear end side of the tubular housing has a shape configured for connection to the optical connector plug when the plug housing is removed from the optical connector plug. A ferrule is provided on the front end side of the tubular housing and has a mechanism capable of attenuating, cutting-off, reflecting or absorbing a specific wavelength of light. An optical connection sleeve is connected to an end of the ferrule. A frame supports the ferrule and the optical connection sleeve and is mounted in the tubular housing for undergoing axial movement therein by a preselected amount.

Optical functioning component and optical connector having optical functioning component

This invention provides an optical fiber wiring board having excellent optical property, high reliability and high mounting property. This invention relates to an optical fiber component for connection having a substrate on which a plurality of optical fibers being wired, wherein a foam polymer layer is provided on a surface of the substrate wiring the optical fibers, or both on a surface of the substrate wiring the optical fibers and on a surface opposite to the surface of the substrate wiring the optical fibers, or so that whole of substrate is covered. The optical fiber component of the present invention may be further provided with a protective layer and may be filled with a filler. This invention provides also a manufacturing method of the optical fiber component for connection.

Optical fiber component for connection and manufacturing method thereof

An optical connector plug has a front housing, a rear housing, a ferrule, a coil springand an optical cord fixing member, and in addition to the ferruleand the coil spring, the optical cord fixing memberfor fixing a tension resistive member and a cord outer jacket is received and held within an internal through space defined when the front housingand the rear housingare coupled. Also, upon assembling the optical connector plug, assembling of these memberstocan be realized by movement in an axial direction as much as possible. Accordingly, assembling of the optical connector plug is facilitated and suitable for automatic assembling.

Optical connector plug, manufacturing method thereof and assembling tool

A plug frame for an optical connector component comprising a ferrule for receiving an end portion of a core optical fiber of a fiber optic cable and a plug frame for floatingly supporting the ferrule. The plug frame is configured as a one-piece component. This allows reduction of the number of component parts and assembling steps, simplification of the assembling operations and reduction of the manufacturing cost.

One-piece construction of plug frame for optical connector component

An optical fiber ribbonizing apparatus is disclosed which arranges a plurality of optical fibers in parallel, applies a resin to peripheries of the plurality of optical fibers, and hardens the resin to form the optical fibers into a ribbon. The apparatus comprises a ribbonizing jig integrally including an optical fiber aligning mechanism for aligning the plurality of optical fibers in parallel, a resin applying mechanism for applying the resin to the optical fibers aligned by the fiber aligning mechanism and a resin hardening device for hardening the resin applied to the optical fibers by the resin applying mechanism, the optical fiber aligning mechanism, the resin applying mechanism and the resin hardening device being arranged in a line in an optical fiber inserting direction, and movement mechanism for moving at least one of the ribbonizing jig and the optical fibers in a predetermined direction relative to the other.

Optical fiber ribbonizing apparatus

Disclosed is an optical connector component comprising a ferrule for receiving an end portion of a core optical fiber of a fiber optic cable, a flange mounted on the peripheral of the ferrule and a one-piece plug frame for floatingly supporting the ferrule having the flange mounted thereon. The flange and the plug frame are provided with respective engagement portions that are mutually engaged. The flange has such resiliency that it is reduced in diameter by a radial and inward force exerted through the engagement portions when the ferrule is inserted into the plug frame from one end thereof and the flange is restored to the original condition present before the insertion when the engagement portions are mutually engaged.

Ferrule holding structure for optical connector component

An optical module capable of connecting signal lines to an external substrate easily without causing any degradation of the transmission characteristic is disclosed. The optical module comprises an optical element mounting block having an optical element mounting section and an optical fiber guide, and a wiring lead integrated resin substrate having a ferrule holding section, an optical element mounting block housing section, and wiring leads, where at least a part of the wiring leads are provided by signal lines in a coplanar guide structure entirely formed on the wiring lead integrated resin substrate such that a characteristic impedance does not change when the wiring leads are electrically connected to external wirings.

Optical module using wiring lead integrated resin substrate

An optical fiber connector has a stop ring having an end portion having an outer periphery and an optical fiber cable having a strength member extending from an end thereof. An adhesive material is disposed over the end portions of the stop ring and the optical fiber cable so that at least a portion of the strength member of the optical fiber cable is embedded in the adhesive material. A heat-shrinkable tube has an inner surface and is disposed on the adhesive material so that the portion of the strength member is disposed between the inner surface of the heat-shrinkable tube and the outer periphery of the stop ring.

Optical fiber connector

In a light waveguide circuit including a plurality of waveguides having different length, a material (,) having a temperature coefficient of a refractive index including a symbol different from that of a temperature coefficient of an effective refractive index of the waveguide (,) is charged into a groove (,) formed by removing the upper clad and the core from the waveguide (,), or a groove (,) formed by removing the upper clad, the core and the lower clad from the waveguide (,). A difference in length of the removed portions between adjacent waveguides is proportional to a difference in length of the waveguides which were not removed and remained.

Optical waveguide circuit, its manufacturing method and optical waveguide module having the optical waveguide circuit

An optical fiber ribbon includes a plurality of optical fibers arranged in a row and an outer coating formed around the optical fibers. Each of the optical fibers has a core, a cladding, and a non-strippable thin coating made of synthetic resin with a Young's modulus of 50 kg/mm,to 250 kg/mm,at room temperature and coated around the cladding. The concentricity of the core to the diameter of the non-strippable thin coating is 1 &mgr;m or less.

Optical fiber

Growing community of inventors

Tokyo, Japan

Shin Sumida