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:
Aug. 09, 2011
Filed:
Apr. 24, 2007
Hyun-soo Kim, Daejeon, KR;
Jeong-woo Park, Daejeon, KR;
Bongki Mheen, Daejeon, KR;
Gyungock Kim, Daejeon, KR;
Hyun-Soo Kim, Daejeon, KR;
Jeong-Woo Park, Daejeon, KR;
Bongki Mheen, Daejeon, KR;
Gyungock Kim, Daejeon, KR;
Electronics & Telecomunications Research Institute, Daejeon, KR;
Abstract
Provided is an optical device 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 uniform thickness; a gate insulating layer which has ashape and is formed on a portion of the first semiconductor layer and has a thin center portion; 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 type impurities.