Optical: systems and elements – Optical amplifier – Correction of deleterious effects
Patent
1998-03-11
1999-11-16
Moskowitz, Nelson
Optical: systems and elements
Optical amplifier
Correction of deleterious effects
359127, 359154, 359194, 359341, H01S 3094, G02B 628, G02F 139
Patent
active
059867990
ABSTRACT:
An optical amplifier prevents generation of an optical surge when an input signal to the optical amplifier is interrupted. A synthesized signal of an input signal light and a pumping light is input to an optical amplifying medium. An input signal light interruption detecting circuit detects an interruption of the input signal light. A variable attenuator element is provided on a signal light input side of the optical amplifying medium so as to attenuate the input signal light. The variable attenuator element is controlled based on an output of the input signal light interruption detecting circuit so that a degree of attenuation of the variable attenuator element is increased when the input signal light is interrupted and the degree of attenuation is gradually decreased when the input signal light returns.
REFERENCES:
patent: 5267071 (1993-11-01), Little et al.
patent: 5457811 (1995-10-01), Lemsa
patent: 5570227 (1996-10-01), Nabeyama et al.
patent: 5633749 (1997-05-01), Shibuya
patent: 5664131 (1997-09-01), Sugiya
patent: 5701195 (1997-12-01), Chikama
patent: 5812710 (1998-09-01), Sugaya
patent: 5818629 (1998-10-01), Kinoshita
Itou Hiroyuki
Takahashi Tsukasa
Fujitsu Limited
Moskowitz Nelson
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