# US 5,351,328 A · Optical connector with V-grooves having an oxide film

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- Number: US 5,351,328 A
- Document ID: US5351328A
- Status: Granted
- Kind: A
- Application number: 08/161,346
- Filed: 1993-12-06
- Granted: 1994-09-27
- Earliest claimed: 1991-09-09
- Assignees: Sumitomo Electric Industries, Ltd.; Nippon Telegraph and Telephone Corporation
- Inventors: Toshiaki Kakii; Makoto Honjo; Hidetoshi Ishida; Hiroshi Katsura; Toru Yamanishi; Kazumichi Miyabe; Yoshikyo Tamekuni; Shinji Nagasawa
- Web page: https://patentgrep.com/patent/US5351328A

## CPC

- G02B 6/3865: {fabricated by using moulding techniques (shaping techniques of plastic materials in general B29C; producing plastic optical fiber connectors B29D11/0075)}
- G02B 6/3839: {for a plurality of light guides}
- G02B 6/3873: {Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls}
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

## Abstract

An optical connector for connecting optical fibers, comprises: a guide-groove substrate having grooves for positioning optical fibers and guide pins; an upper plate having groove portions each for covering the guide pins positioned in the guide grooves of the guide-groove substrate; elastic guide-pin pressing members each provided in the groove portions of the upper plate above portions where the guide pin grooves are in contact with the guide pins. In such a arrangement, it is preferable to form an oxide film on said V-grooves of the guide-groove substrate at least in the vicinity of contact points between the guide pins and the V-grooves. The optical connector further includes a resin molding portion for surrounding the substrate and the upper plate, the resin molding portion including a pair of opposite opened portions at a front and back surfaces thereof.

## Claims

### Claim 1

An optical connector for coupling optical fibers, comprising:
a connection member made of silicon and having V-grooves by which guide pins and optical fibers are positioned and fixed; and
an oxide film formed on said V-grooves of said connection member at least in the vicinity of contact points between said guide pins and said V-grooves.

### Claim 2 (depends on 1)

An optical connector as claimed in claim 1, wherein said oxide film is formed by oxidizing surfaces of said V-grooves.

### Claim 3 (depends on 1)

An optical connector as claimed in claim 1, wherein said oxide film has a thickness of 0.01 to 2.0 .mu.m.

### Claim 4 (depends on 1)

An optical connector as claimed in claim 1, wherein said guide pins are made of ceramic.

### Claim 5 (depends on 1)

An optical connector as claimed in claim 1, wherein said guide pins are made of zirconia.