Light amplifier

Details Light amplifier Light amplifier

1995-09-20

1997-09-02

Hellner, Mark

Optical: systems and elements

Optical amplifier

Optical fiber

359342, H01S 300

Patent

active

056641311

ABSTRACT:
A light amplifier includes first and second light amplifying parts, and a first control part. The first light amplifying part has a first number of elements or ions performing a light amplifying operation and is excited by a first exciting light which is excessive with respect to the first number of elements or ions. The first light amplifying part amplifies a signal light applied hereto. The second light amplifying part has a second number of elements or ions performing a light amplifying operation and is excited by a second exciting light having a constant intensity. The second number is than the first number. The second light amplifying part amplifies an amplified signal light output from the first light amplifying part. The first control part performs a control operation so that an intensity of the amplified signal light output from the first light amplifying part is constant.

REFERENCES:
patent: 5050949 (1991-09-01), DiGiovanni et al.
patent: 5177634 (1993-01-01), Way
patent: 5239607 (1993-08-01), da Silva et al.
patent: 5280383 (1994-01-01), Federici et al.
patent: 5406404 (1995-04-01), DiGiovanni et al.
patent: 5430572 (1995-07-01), DiGiovanni et al.
patent: 5436760 (1995-07-01), Nakabayashi
patent: 5497264 (1996-03-01), Bayart et al.
patent: 5506724 (1996-04-01), Shimizu et al.

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