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. 31, 2006
Filed:
Dec. 04, 2003
Hee Sang Chung, Daejeon, KR;
Won Kyoung Lee, Busan, KR;
Sun Hyok Chang, Daejeon, KR;
Hyun Jae Lee, Daejeon, KR;
Moo Jung Chu, Daejeon, KR;
Han Hyub Lee, Daejeon, KR;
Dong Han Lee, Daejeon, KR;
Yong Bae Lee, Daejeon, KR;
Hee Sang Chung, Daejeon, KR;
Won Kyoung Lee, Busan, KR;
Sun Hyok Chang, Daejeon, KR;
Hyun Jae Lee, Daejeon, KR;
Moo Jung Chu, Daejeon, KR;
Han Hyub Lee, Daejeon, KR;
Dong Han Lee, Daejeon, KR;
Yong Bae Lee, Daejeon, KR;
Abstract
The present invention provides an apparatus and method for compensating for the variation of a gain spectrum attributable to the temperature variation of a fiber amplifier, and a long-wavelength band dispersion-compensating hybrid amplifier equipped with the gain spectrum compensating apparatus. The apparatus includes a DCF located between a first amplification stage and a second amplification stage to compensate for dispersion of an optical signal output from the first amplification stage and perform Raman amplification of the optical signal using input pumping light; at least one pumping light provision means for providing forward or backward pumping light to the DCF; first and second temperature detection means for detecting temperature variations of the first and second amplification stages, respectively; and control means for controlling intensity of the pumping light of the pumping light provision means according to the detected temperature variations.