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:
Mar. 14, 2006
Filed:
Dec. 01, 2003
Kyung-hyun Park, Daejeon, KR;
Young-ahn Leem, Daejeon, KR;
Dong-churl Kim, Daejeon, KR;
Dae-su Yee, Daejeon, KR;
Sung-bock Kim, Anyang, KR;
Yong-soon Baek, Daejeon, KR;
Kyung-Hyun Park, Daejeon, KR;
Young-Ahn Leem, Daejeon, KR;
Dong-Churl Kim, Daejeon, KR;
Dae-Su Yee, Daejeon, KR;
Sung-Bock Kim, Anyang, KR;
Yong-Soon Baek, Daejeon, KR;
Abstract
A multi DFB laser diode for generating spontaneous pulses comprises first and second DFB sections each of which has a substrate including a diffraction grating, an active layer formed on the substrate, a clad layer formed on the active layer and including a refraction varying layer, and an electrode formed on the active layer; and a phase tuning section including a substrate, an active layer formed on the substrate, a clad layer formed on the active layer, and an electrode isolated from the electrode of the first and second DFB sections. The refraction varying layer in the active layer of the first DFB section has a refractive index different from that of the refraction varying layer in the active layer of the second DFB section.