Optical communication system, optical communication...

Details Optical communication system, optical communication... Optical communication system, optical communication...

2006-07-18

2006-07-18

Healy, Brian M. (Department: 2883)

Optical waveguides

Optical transmission cable

With electrical conductor in the same cable

C385S088000, C385S089000, C385S092000, C385S128000, C398S033000, C439S577000

Reexamination Certificate

active

07079733

ABSTRACT:
An optical communication apparatus is connected to the other communication apparatus by an optical fiber. The optical fiber cable comprises conducting wires. By interconnecting an output-side conducting circuit provided to the optical communication apparatus and an input-side conducting circuit provided to the other communication apparatus, a detection circuit is constituted. The optical communication apparatus comprises a monitor for monitoring a state of conduction of the detection circuit and an output control portion for controlling a laser diode. When the optical fiber cable is extracted from the optical communication apparatus, it is extracted from the other communication apparatus, and it is broken, the output-side and input-side conducting circuits are cut off. The monitor monitors a change in the state of conduction. If the monitor detects a change in the state of conduction, the output control portion stops emission of light from the laser diode.

REFERENCES:
patent: 4612670 (1986-09-01), Henderson
patent: 5394503 (1995-02-01), Dietz et al.
patent: 6456768 (2002-09-01), Boncek et al.
patent: 6821146 (2004-11-01), Tolmie
patent: 2002/0126967 (2002-09-01), Panak et al.
patent: 2 200 009 (1988-07-01), None
Patent Abstracts of Japan vol. 0082, No. 29 (E-273), Oct. 20, 1984 & JP 59 111433 A (Hitachi Seisakusho KK) Jun. 27, 1984.

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