Tomoegawa Paper Co., Inc.

Tomoegawa Co., Ltd.

Other

Nippon Telegraph and Telephone Corporation

Ken Sukegawa

Masayoshi Suzuki

Kyoichi Sasaki

Tatsushi Kobayashi

Ritsu Kawase

Tomoki Furue

Koichi Arishima

Mamoru Hirayama

Nobuhiro Hashimoto

Fumihiro Ebisawa

Tadao Matsunaga

Mitsutoshi Hoshino

Nobuhiro Funakoshi

Akira Morinaka

Takashi Yoshida

Miwa Urabe

Shigeko Toeda

Norio Sashida

There is provided a tape core wire manufacturing apparatus that makes it possible to manufacture a large variety of tape core wires in small quantities with ease, and in addition, makes it easy to apply a uniform coating over a broad width. In the tape core wire manufacturing apparatus of the present invention, a coating apparatus that applies a coating material to respective optical fiber core wires has a coating head that moves in the longitudinal direction relatively to the respective optical fiber core wires that have been placed in a row on a coating jig. The coating head has a position adjustment surface that is located in the vicinity of a coating member of the coating head and adjusts the positioning in the thickness direction of the respective optical fiber core wires when these are in the form of a tape. This position adjustment surface is pressed against the respective optical fiber core wires. The coating head is also able to be tilted in the longitudinal direction.

Tape core wire manufacturing apparatus, tape core wire wiring apparatus and wiring method

An adhesive connecting member and an optical connecting structure using the member, in which connection loss can be reduced and handling is facilitated, are provided. The adhesive connecting member optically connects an optical transmission medium and another optical transmission medium or an optical part by being intervened therebetween, and the member has a strongly adhesive face contacting the optical transmission medium and a weakly adhesive face contacting the other optical transmission medium or optical part. In addition, by this adhesive connecting member, the optical transmission medium and the other transmission medium or optical part can be optically connected.

Adhesive connecting member, optical connecting structure used therewith, and jig for attaching adhesive connecting member

An optical fiber coil and a production method therefor reduce the likelihood of optical transmission loss due to stress or temperature changes at low cost. Plural single optical fibers are arranged in parallel and are integrally covered with a covering portion so as to form an optical fiber ribbon, and the optical fiber ribbon is wound into a coiled state.

Production method for optical fiber coil

The present invention provides a process for producing an optical connector, an apparatus for producing the same, and a process for forming a polymer coating film on an end face of a fibrous dielectric, which can dispose a refractive index adjuster only onto an end face of an optical transmitting medium with excellent reproducibility. Such a process includes bringing an end surface of the optical transmitting medium close to an end face of a liquid refractive index adjuster, while charging at least one of the optical transmitting medium and the liquid refractive index adjuster, thereby adhering the liquid refractive index adjuster to the end face of the optical transmitting medium, and thereafter solidifying the adhered liquid refractive index adjuster to obtain the refractive index adjuster.

Process for producing optical connector, apparatus for producing the same, and process for forming polymer coating

Tape core wire wiring apparatus

The present invention provides an optical fiber structure that allows for reliable and easy branching of optical fibers, as well as a method of manufacturing such optical fiber structure. The optical fiber structure proposed by the present invention is characterized by a structure wherein multiple optical fiber units, each comprising multiple optical fibers that are aligned two-dimensionally in such a way that one side is covered by a first covering body, are aligned so that the covered surfaces face the same direction, and the covered or uncovered surfaces of the multiple optical fiber units are integrally covered by a second covering body. The second covering body should preferably be made of silicone rubber having a tearing strength of 29 kgf/cm or below.

Optical fiber structure and method of manufacturing same

An optical fiber wiring sheet includes: at least one optical-fiber aligning section including a plurality of two-dimensionally aligned and wired coated optical fibers; and at least one optical-fiber branching part where at least one of the plurality of coated optical fibers branches off as a branching coated optical fiber from the remaining coated optical fibers. The coated optical fibers have ends which constitute optical input/output ports.

Optical fiber wiring sheet and method of manufacturing same

The present invention provides an optical interconnection apparatus free from attaching, fixing or adhering when come into contact with each other or with another material, and easy to handle. The optical interconnection apparatus according to the invention comprises a substrate (), a protective resin layer () composed of a silicone based rubber-like or gel-like material on one side or both sides of said substrate, and plural optical fibers () which are routed two-dimensionally routed on the substrate and provided at ends thereof with end portions () adapted to permit optical interconnections, and said optical fibers being held in place by said protective resin layer, wherein a non-tacky surface layer () is provided on the surface of said protective resin layer. The non-tacky surface layer is preferred to be composed of a silicone-based material and having a kinetic friction coefficient of 3.0 or less.

Optical connection component

An optical inter-connection apparatus according to this invention has plural optical fibers 4, which are routed in a two-dimensional plane and are provided at opposite ends thereof with end portions 5 adapted to permit optical interconnections thereto, and at least one protective resin layer 2 by which the optical fibers are held in place. The protective resin layer 2 is formed from a silicone-base material curable through a condensation reaction with liberation of an oxime or liberation of an alcohol or from a silicone-base material, which is curable by crosslinking through a hydrosilation reaction, and an adhesion promoter, and is joined with a base 1 or another protective resin layer via an adhesive layer 3. The adhesive layer comprises an acrylic pressure-sensitive adhesive. As an alternative, the adhesive layer may comprise a silicone-base pressure-sensitive adhesive which is curable by crosslinking through a hydrosilation reaction.

Optical connecting component

This invention provides optical interconnection apparatus, which permit easy optical interconnections without a loss in the intactness of a routing pattern of optical fibers, and also their fabrication processes. An optical interconnection apparatus according to this invention has a base film having a two-dimensional plane, plural optical fibers routed on the base film an edge-dam arranged along or in a vicinity of a peripheral edge of the base film, a protective resin layer holding in place and protecting the plural optical fibers routed on the two-dimensional plane of the base film, and end portions located at opposite ends of the optical fibers and adapted to permit optical interconnections. The protective resin layer is formed, for example, by filling a resin material inside the edge-dam arranged along or in the vicinity of the peripheral edge of the base film and then solidifying it.

Optical interconnection apparatus and process for fabrication of the same

A process is disclosed to fabricate an optical interconnection apparatus in which plural optical fibers having end portions are provided at ports of the optical interconnection apparatus for optical interconnection, the plural optical fibers are routed in a two-dimensional plane such that a routing pattern having at least one type of parts selected from overlapping parts, curved parts or fiber pitch change partsis formed and the end portions of the optical fibers are located extending out from the ports of the optical interconnection apparatus and are protected by protective boots. According to the process, an edge-dam member, which is provided with protruding portions for forming protective boots, is formed along or in a vicinity of a peripheral edge of a base film for supporting the thus-routed optical fibers thereon. A resin material is filled inside the edge-dam member such that a protective resin layer is formed to hold the optical fibers in place and the protective boots are formed on the end portions of the optical fibers.

Process for the fabrication of an optical interconnection apparatus

An optical interconnection apparatus ( ) comprises a two-dimensional flexible base film ( ), a plurality of optical fibers ( ) with end portion for optical connection (e.g., optical connectors), and a protective resin layer ( ) of plastic material filled inside edge-dam ( ) formed along or in the vicinity of the peripheral edges of the base film ( ). The base film ( ) has an opening, in which the protective resin layer ( ) covers the optical fibers ( ) to fix them. A plurality of such apparatus ( ) can be stacked to form a laminate. Since the base film ( ) has the opening where the optical fibers ( ) are routed intricately, the optical interconnection apparatus ( ) has improved flexibility and can be used in a narrow space.

Device for optical connection

A UV-A, UV-B discriminating sensor provided with a photochromic compound or photochromic composition as the sensor portion, the photochromic compound or photochromic composition coloring under exposure to UV of wavelength greater than or equal to 280 nm or less than or equal to 400 nm, and wherein at least a portion of the photochromic layer is covered with a layer containing a pigment which absorbs UV of wavelength less than 320 nm, or with a layer containing a pigment which absorbs UV of a wave length greater than or equal to 320 nm but less than or equal to or equal to 400 nm.

Growing community of inventors

Shizuoka, Japan

Ken Sukegawa