Optical amplifier for amplifying a signal light and a continuous

Details Optical amplifier for amplifying a signal light and a continuous Optical amplifier for amplifying a signal light and a continuous

1995-01-26

1995-10-03

Moskowitz, Nelson

Optical: systems and elements

Optical amplifier

Optical fiber

359337, 372 6, G02B 626, H01S 3103

Patent

active

054557100

ABSTRACT:
In an optical amplifier a signal light of a wave length .lambda. a is coupled with a continuous light of a wave length .lambda. b and amplified by an optical fiber amplifier. Then, the amplified output light is subjected to filtration to select the light of the wave length .lambda. a alone, so that the ASE power is reduced and the dynamic range of the optical fiber amplifier from the minimum light receipt power to the saturation after amplification can be enlarged, and, in the case that the signal light is pulse-modulated, the deterioration of the extinction ratio is minimized.

REFERENCES:
patent: 4879761 (1989-11-01), Webb
patent: 5050949 (1991-09-01), Di Giovanni et al.
patent: 5117303 (1992-05-01), Desurvire et al.
patent: 5128800 (1992-07-01), Zirngibl
patent: 5229876 (1993-07-01), Fatehi et al.
The Journal of Applied Physics of Japan, "Optical Fiber Amplification With Er-doped Optical Fiber and its Application", vol. 59, No. 9, pp. 1175-1191 (1990) (Partial Translation).

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