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. 03, 2012
Filed:
Aug. 13, 2010
Kyung Hyun Park, Daejeon, KR;
Namje Kim, Daejeon, KR;
Young Ahn Leem, Daejeon, KR;
Sang-pil Han, Daejeon, KR;
Chul-wook Lee, Daejeon, KR;
Jaeheon Shin, Daejeon, KR;
Eundeok Sim, Daejeon, KR;
Yongsoon Baek, Daejeon, KR;
Kyung Hyun Park, Daejeon, KR;
Namje Kim, Daejeon, KR;
Young Ahn Leem, Daejeon, KR;
Sang-Pil Han, Daejeon, KR;
Chul-Wook Lee, Daejeon, KR;
Jaeheon Shin, Daejeon, KR;
Eundeok Sim, Daejeon, KR;
Yongsoon Baek, Daejeon, KR;
Electronics and Telecommunications Research Institute, Daejeon, KR;
Abstract
Provided is a laser device. In the laser device, an active layer is connected to a stem core of a 1×2 splitter on a substrate, a first diffraction grating is coupled to a first twig core of the 1×2 splitter, and a second diffraction grating is coupled to a second twig core of the 1×2 splitter. An active layer-micro heater is designed to supply heat to the active layer. First and second micro heaters are designed to supply heats to the first and second diffraction gratings, respectively, thereby varying a Bragg wavelength.