Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
January 6, 2009
Patent Application Number
10731266
Date Filed
December 9, 2003
Patent Primary Examiner
Patent abstract
In an optical transmission system which can keep a flat pass characteristic within an optical signal modulation band, a spectrum of a dropped optical signal within a modulation band per channel is monitored, and non-flatness for the optical signal is compensated by detecting the non-flatness of a pass characteristic of a transmission line from the spectrum.
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