The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 24, 2007
Filed:
Feb. 23, 2006
Jong Moo Lee, Daejeon, KR;
Sun Tak Park, Daejeon, KR;
Yong Soon Baek, Daejeon, KR;
Abstract
Provided are a temperature-insensitive polymeric optical AWG device and method of manufacturing the same. The temperature-insensitive polymeric optical AWG device includes: polymeric grating channel waveguides interposed between free propagation slab regions on a substrate between the input and output waveguides and having different lengths; a plurality of hollow trenches formed by selectively etching a surface of the substrate under the polymeric grating channel waveguides and allowing the polymeric grating channel waveguides to freely thermally expand from the substrate depending on a temperature variation; and a shield layer shielding entrances of the hollow trenches so that the polymeric grating channel waveguides do not flow into the hollow trenches.