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. 20, 2015
Filed:
Sep. 13, 2012
OH Kee Kwon, Daejeon, KR;
Su Hwan OH, Daejeon, KR;
Young Ahn Leem, Daejeon, KR;
O-kyun Kwon, Daejeon, KR;
Young-tak Han, Daejeon, KR;
Yongsoon Baek, Daejeon, KR;
Yun C. Chung, Daejeon, KR;
Oh Kee Kwon, Daejeon, KR;
Su Hwan Oh, Daejeon, KR;
Young Ahn Leem, Daejeon, KR;
O-Kyun Kwon, Daejeon, KR;
Young-Tak Han, Daejeon, KR;
Yongsoon Baek, Daejeon, KR;
Yun C. Chung, Daejeon, KR;
Electronics and Telecommunications Research Institute, Daejeon, KR;
Abstract
Distributed feedback-laser diodes are provided. The distributed feedback-laser diode may include a substrate, a lower cladding layer having a grating on the substrate, an active layer disposed on the lower cladding layer, a first upper cladding layer disposed on the active layer, a phase-shift region extending in a first direction on the first upper cladding layer, and a ridge waveguide layer extending in a second direction crossing the first direction on the phase-shift region.