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Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
July 12, 2011
Patent Application Number
12438558
Date Filed
January 11, 2007
Patent Primary Examiner
Patent abstract
The present invention relates to an optical modulator that generates quaternary amplitude modulated light without inter-symbol-interference by splitting input light into three optical paths, generating a continuous wave signal in a first optical path, generating binary phase modulated lights using a single drive MZ type optical phase modulator in second and third optical paths, and interfering them at in-phase and at field amplitude 1:a:b.
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