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:
Feb. 01, 2011
Filed:
Jun. 25, 2009
Junghyung Pyo, Seoul, KR;
Duk-jun Kim, Daejeon, KR;
In-gyoo Kim, Daejeon, KR;
Gyungock Kim, Seoul, KR;
Junghyung Pyo, Seoul, KR;
Duk-Jun Kim, Daejeon, KR;
In-Gyoo Kim, Daejeon, KR;
Gyungock Kim, Seoul, KR;
Electronics and Telecommunications Research Institute, Daejeon, KR;
Abstract
Provided is an optical device, which includes a substrate, a first cladding disposed on the substrate, a first optical waveguide extended in a first direction on the first cladding, and having a first refractive index, a side grating formed in at least one side of the first optical waveguide, a second optical waveguide filling a space of the side grating, extended in a second direction across the first direction on the first cladding, and having a second refractive index, and a second cladding disposed on the second optical waveguide, and having a third refractive index, wherein the first refractive index is greater than the second refractive index, and the second refractive index is greater than the third refractive index.