Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
November 9, 2010
Patent Application Number
12088131
Date Filed
September 26, 2006
Patent Primary Examiner
Patent abstract
A tunable laser comprises a gain section and two or more reflectors. At least one of the reflectors is a Bragg grating comprising a reduced strength section comprising a base order periodic pattern of marks and spaces from at which at least some of the marks or spaces are missing. This enables the reflective strength of the grating to be controlled relative to the other reflector. The Bragg grating may be a phase change grating with individual sections being reduced in strength by line removal.
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