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:
Aug. 09, 2005
Filed:
Jul. 31, 2003
Dong-churl Kim, Daejeon, KR;
Young-ahn Leem, Daejeon, KR;
Dae-su Yee, Daejeon, KR;
Kyung-hyun Pakr, Daejeon, KR;
Sung-bock Kim, Daejeon, KR;
Yong-soon Baek, Daejeon, KR;
Eun-deok Sim, Daejeon, KR;
Dong-Churl Kim, Daejeon, KR;
Young-Ahn Leem, Daejeon, KR;
Dae-Su Yee, Daejeon, KR;
Kyung-Hyun Pakr, Daejeon, KR;
Sung-Bock Kim, Daejeon, KR;
Yong-Soon Baek, Daejeon, KR;
Eun-Deok Sim, Daejeon, KR;
Abstract
Disclosed is a high frequency optical pulse source generating stable optical pulses over a wide current range in an optical transmission system to enhance stability and reliability, the high frequency optical pulse source implementing, in one chip, a multi-section distributed feedback (DFB) laser diode with a phase control section arranged between two DFB laser diodes. By controlling the current applied to the electrode of the phase control section while applying currents to the first and second DFB sections, the present invention causes self-mode locking between the compound-cavity modes having similar threshold currents, thereby generating stable tens GHz-level optical pulses. Hence, the present invention generates optical pulses uniformly over a wide current range, thereby enhancing the stability and reliability of the element.