Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Tomoaki Takeyama0
Keiko Sasaki0
Shinya Inagaki0
Takashi Shimizu0
Date of Patent
November 14, 2006
Patent Application Number
11094720
Date Filed
March 31, 2005
Patent Primary Examiner
Patent abstract
The present invention has an object to provide an optical amplifier capable of realizing a good response characteristic in a wide frequency band, even when a population inversion state is formed by a pumping light supplied to an optical amplification medium and an ASE light generated in the optical amplification medium. To this end, in the optical amplifier according to the present invention, a delayed phase matching fiber in which a first fiber whose response speed is relatively low is arranged on the input side and a second fiber whose response speed is relatively high is arranged on the output side, is used as the optical amplification medium doped with a rare-earth element.
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