Communication system

Optical communications – Optical repeater system – Supervisory signal by repeater

Reexamination Certificate

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C398S177000

Reexamination Certificate

active

07039325

ABSTRACT:
A communication system that improves operation and maintenance and controls communication efficiently. A supervisory signal sending control section controls the sending of a supervisory signal for having supervisory control of optical communication and a drive supervisory signal for controlling the driving of an optical fiber amplifier for performing optical amplification by using a non-linear optical phenomenon in an optical fiber. A sending stop section receives a stop signal and stops the sending of the drive supervisory signal. A drive control section receives the drive supervisory signal and controls the driving of the optical fiber amplifier. A stop signal sending section sends the stop signal to a sending unit after the optical fiber amplifier being driven.

REFERENCES:
patent: 4401364 (1983-08-01), Mochizuki
patent: 4616898 (1986-10-01), Hicks, Jr.
patent: 4805977 (1989-02-01), Tamura et al.
patent: 5883735 (1999-03-01), Sugiyama et al.
patent: 6647211 (2003-11-01), Terahara et al.
patent: 1018666 (2000-07-01), None
Kokusaitsuushin no kenkyu No. 134, Oct. 1987, pp. 383-390, “Direct Optical Amplification by Fibre Raman Amplifier”, Oct. 1987.
Electronics Letters, Sep. 3rd1998, vol. 34, No. 18, pp. 1745-1747, Sep. 3, 1988.
OSA Tops vol. 30, “Optical Amplifiers and Their Applications”, pp. 101-105.

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