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. 16, 2010
Filed:
Dec. 01, 2003
Kyung-hyun Park, Daejeon, KR;
Dae-su Yee, Daejeon, KR;
Dong-churl Kim, Daejeon, KR;
Young-ahn Leem, Daejeon, KR;
Sung-bock Kim, Daejeon, KR;
Kyung-Hyun Park, Daejeon, KR;
Dae-Su Yee, Daejeon, KR;
Dong-Churl Kim, Daejeon, KR;
Young-Ahn Leem, Daejeon, KR;
Sung-Bock Kim, Daejeon, KR;
Abstract
A multi-section semiconductor laser diode is disclosed. The laser diode includes a complex-coupled DFB laser section that includes a complex-coupled grating and an active structure for controlling the intensity of oscillating laser light, to oscillate laser light in a single mode, and an external cavity including a phase control section and an amplifier section, the phase control section having a passive waveguide that controls a phase variation of feedback laser light, the amplification section having an active structure that controls the strength of the feedback laser light. Currents are separately provided to the three sections to generate optical pulses with tuning range of tens of GHz. Applications include the clock recovery in the 3R regeneration of the optical communication.