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:
Oct. 17, 2006
Filed:
Oct. 22, 2003
Dong-jae Shin, Suwon-shi, KR;
Dae-kwang Jung, Suwon-shi, KR;
Jea-hyuck Lee, Anyang-shi, KR;
Seong-taek Hwang, Pyongtaek-shi, KR;
Yun-je OH, Yongin-shi, KR;
Dong-Jae Shin, Suwon-shi, KR;
Dae-Kwang Jung, Suwon-shi, KR;
Jea-Hyuck Lee, Anyang-shi, KR;
Seong-Taek Hwang, Pyongtaek-shi, KR;
Yun-Je Oh, Yongin-shi, KR;
Samsung Electronics Co., Ltd., Suwon-Si, KR;
Abstract
A method for maintaining the mode-locked state of a Fabry-Perot (FP) laser and a WDM light source using the same method for use in WDM optical communication are disclosed. The mode-locked state can be maintained irrespective of temperature change, without use of a temperature controller, by spectrum-slicing the incoherent light generated by a light source element and injecting the spectrum-sliced light to the FP laser, then the FP laser amplifies and outputs only a lasing mode coinciding with the wavelength of the injected light, wherein a lasing-mode interval of the FP laser is set to be less than a 3 dB linewidth of the injected light, so that at least one lasing mode exists inside the 3 dB linewidth of the injected light irrespective of changes in external temperature.