Optical amplifier

Details Optical amplifier Optical amplifier

2006-12-05

2006-12-05

Keith, Jack (Department: 3663)

Optical: systems and elements

Optical amplifier

Optical fiber

Reexamination Certificate

active

07145717

ABSTRACT:
An optical amplifier that improves transmission quality by driving an excitation light source according to a change in the level of an input optical signal and by compensating for a change in the characteristics of the excitation light source. An optical amplification section includes an amplification medium doped with an active substance for optical amplification and an excitation light source for emitting excitation light. A constant-gain control section finds out target excitation light power to be set according to a change in the level of an input optical signal on the basis of a correlation between a gain and excitation light power to obtain a target gain, finds out a target drive signal for making the excitation light source emit the target excitation light power on the basis of a correlation between a drive signal for driving the excitation light source and excitation light power, and exercises constant-gain control over the optical amplification section by a feedforward control system.

REFERENCES:
patent: 5374973 (1994-12-01), Maxham et al.
patent: 5594748 (1997-01-01), Jabr
patent: 6215565 (2001-04-01), Davis et al.
patent: 6246514 (2001-06-01), Bonnedal et al.
patent: 6341034 (2002-01-01), Sun et al.
patent: 6417965 (2002-07-01), Ye et al.
patent: 6690508 (2004-02-01), Tian et al.
patent: 6762878 (2004-07-01), Park et al.
patent: 6900934 (2005-05-01), Lelic
patent: 2002/0027706 (2002-03-01), Park et al.
patent: 2003/0184851 (2003-10-01), Tian et al.
Meriam-Webster's Collegiate Dictionary, 10thed., Meriam-Webster Inc, Springfiled, Mass., p. 79 (1999).
Patent Abstracts of Japan, Pub. No. 2002-217836.
European Patent Office Search Report dated Jun. 29, 2005 in corresponding European Patent Application No. EP 04 00 4302.

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