Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Takashi Sato0
Shinya Inagaki0
Tomoaki Takeyama0
Kazunari Tsubaki0
Keiko Sasaki0
Date of Patent
February 12, 2008
0Patent Application Number
108041870
Date Filed
March 19, 2004
0Patent Primary Examiner
Patent abstract
A wavelength division multiplexed optical amplifier, enabling elimination of the problems of oscillation and fluctuation in output due to ASE at the time of a rapid change in the number of input wavelengths, provided with a first-stage optical amplifying unit, second-stage optical amplifying unit, a common AGC circuit for common AGC of the first and second optical amplifying units, and a pumping light distribution means for applying pumping light to the first and second-stage optical amplifying units with a predetermined distribution ratio.
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