Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Yuichi Thomori0
Hiromi Oohashi0
Nobuhiro Kikuchi0
Yasuo Shibata0
Date of Patent
August 8, 2006
Patent Application Number
10265065
Date Filed
October 3, 2002
Patent 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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