Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Ashish K. Verma0
Tsurugi Sudo0
Sumesh Mani K. Thiyagarajan0
David Bruce Young0
Date of Patent
October 12, 2010
0Patent Application Number
121383610
Date Filed
June 12, 2008
0Patent Primary Examiner
Patent abstract
In one example embodiment, a DFB laser includes a substrate, an active region positioned above the substrate, and a grating layer positioned above the active region. The grating layer includes a portion that serves as a primary etch stop layer. The DFB laser also includes a secondary etch stop layer located either above or below the grating layer, and a spacer layer interposed between the grating layer and the active region.
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