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:
Apr. 12, 2011
Filed:
Apr. 24, 2007
Hyun-soo Kim, Daejeon, KR;
Jeong-woo Park, Daejeon, KR;
Bongki Mheen, Daejeon, KR;
Young-ahn Leem, Daejeon, KR;
Gyungock Kim, Seoul, KR;
Hyun-Soo Kim, Daejeon, KR;
Jeong-Woo Park, Daejeon, KR;
Bongki Mheen, Daejeon, KR;
Young-Ahn Leem, Daejeon, KR;
Gyungock Kim, Seoul, KR;
Electronics & Telecommunications Research Institute, Daejeon, KR;
Abstract
Provided is an optical device having an edge effect with improved phase shift and propagation loss of light without decreasing the dynamic characteristics of the optical device. The optical device includes a first semiconductor layer which is doped with a first type of conductive impurities, and has a recessed groove in an upper portion thereof; a gate insulating layer covering the groove and a portion of the first semiconductor layer; and a second semiconductor layer which covers an upper surface of the gate insulating layer and is doped with a second type of conductive impurities opposite to the first type of conductive impurities.