Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Yasuo Shibata0
Yuichi Thomori0
Nobuhiro Kikuchi0
Hiromi Oohashi0
Date of Patent
August 28, 2007
0Patent Application Number
114535880
Date Filed
June 14, 2006
0Patent Primary Examiner
Patent abstract
An optical amplifier includes a first optical path, second optical path, semiconductor optical amplifier, and multi-mode interference 3-dB coupler. The first optical path guides oscillation light. The second optical path guides signal light. The semiconductor optical amplifier causes oscillation on the first optical path. The multi-mode interference 3-dB coupler crosses the first and optical paths in the gain medium of the semiconductor optical amplifier.
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