Optical amplifying repeater

Details Optical amplifying repeater Optical amplifying repeater

1998-02-26

1999-03-16

Moskowitz, Nelson

Optical: systems and elements

Optical amplifier

Optical fiber

359143, 359177, H04B 1008, H01S 300

Patent

active

058837353

ABSTRACT:
An optical amplifying repeater is provided which enables even after the main input optical signal is disconnected, the continued returning of a response signal in response to a command signal from an end station. This optical amplifying repeater comprises an optical amplifier, an automatic level control loop including therein a drive control unit, a supervisory unit which returns a response signal RS responding to a command signal CM from an end office, and a detection/control unit which controls the drive control unit so as to increase the amplitude of the response signal RS when a loss of the main optical signal S from an optical transmission line is detected.

REFERENCES:
patent: 5383046 (1995-01-01), Tamofuji et al.
patent: 5539557 (1996-07-01), Horiuchi et al.

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