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:
Jan. 04, 2011
Filed:
Jul. 20, 2009
Kyung Hyun Park, Daejeon, KR;
Jaeheon Shin, Daejeon, KR;
Namje Kim, Daejeon, KR;
Chul-wook Lee, Daejeon, KR;
Eundeok Sim, Daejeon, KR;
Sang-pil Han, Daejeon, KR;
Yongsoon Baek, Daejeon, KR;
Kyung Hyun Park, Daejeon, KR;
Jaeheon Shin, Daejeon, KR;
Namje Kim, Daejeon, KR;
Chul-Wook Lee, Daejeon, KR;
Eundeok Sim, Daejeon, KR;
Sang-Pil Han, Daejeon, KR;
Yongsoon Baek, Daejeon, KR;
Electronics and Telecommunications Research Institute, Daejeon, KR;
Abstract
Provided is a multiple distributed feedback laser device. The laser device includes an active layer, a first diffraction grating, and a second diffraction grating. The substrate includes a first distributed feedback region, a modulation region, and a second distributed feedback region. The first diffraction grating is coupled to the active layer in the first distributed feedback region. The second diffraction grating is coupled to the active layer in the second distributed feedback region. In addition, the laser device includes a first micro heater and a second micro heater. The first micro heater supplies heat to the first diffraction grating. The second micro heater supplies heat to the second diffraction grating. The first micro heater and the second micro heater are controlled independently from each other.