Method of and device for amplifying channels extracted from a wa

Details Method of and device for amplifying channels extracted from a wa Method of and device for amplifying channels extracted from a wa

1997-04-11

1999-06-22

Negash, Kinfe-Michael

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359341, 359161, H04J 1408

Patent

active

059147954

ABSTRACT:
To optimize the amplification in a device for extracting channels from a wavelength division multiplex, the following steps are carried out in succession: a first amplification step with a first gain, a wavelength selection step, and a second amplification step with a second gain. The first and second gains respectively confer upon the output optical signal a fixed signal to noise ratio and a particular optical power. Applications include optical transmission networks.

REFERENCES:
patent: 5642215 (1997-06-01), Suzuki et al.
patent: 5706125 (1998-01-01), Nakano
Patent Abstracts of Japan, vol. 017, No. 261 (E-1369), May 21, 1993, corresponding to JP-A-05 003356 (NEC Corp.) dated Jan. 8, 1993.
Kyo Inoue et al, "Tunable Gain Equalization Using a Mach-Zehnder Optical Filter in Multistage Fiber Amplifiers", IEEE Photonics Technology Letters, vol. 3, No. 8, Aug. 1, 1991, pp. 718-720.

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