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:
Jun. 12, 2007
Filed:
Apr. 28, 2004
Sun Hyok Chang, Daejeon, KR;
Hee Sang Chung, Daejeon, KR;
Jin Soo Han, Daejeon, KR;
Ji Sung Jung, Daejeon, KR;
Heuk Park, Daejeon, KR;
Won Kyoung Lee, Busan, KR;
Hyun Jae Lee, Daejeon, KR;
Sun Hyok Chang, Daejeon, KR;
Hee Sang Chung, Daejeon, KR;
Jin Soo Han, Daejeon, KR;
Ji Sung Jung, Daejeon, KR;
Heuk Park, Daejeon, KR;
Won Kyoung Lee, Busan, KR;
Hyun Jae Lee, Daejeon, KR;
Abstract
Provided are a Raman amplifier and a Raman pumping method. A light source unit outputs a pumping light having a wavelength that periodically changes. A light intensity control unit varies a light intensity of the pumping light using the pumping light to improve the gain flatness of a Raman gain. A control unit directs the light intensity control unit to control the light intensity of the pumping light in synchronization with changes in the wavelength of the pumping light.