Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Carlton D. Brown0
Date of Patent
April 10, 2007
0Patent Application Number
112156670
Date Filed
August 30, 2005
0Patent Primary Examiner
Patent abstract
A system for detecting wavelength error that includes one or more ordered pairs of photodetectors each of which receives an individual optical signal and is used to detect a wavelength error in that optical signal. Each individual optical signal is directed towards a corresponding pair of photodetectors. The pair of photodetectors are positioned around a region of maximum constructive interference or minimum insertion loss. A feedback circuit analyzes output signals from the photodetectors and determines wavelength error based on differences between the output signals from the photodetectors.
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