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:
Dec. 13, 2005
Filed:
Nov. 21, 2003
Se-hong Park, Seoul, KR;
Sang-ho Kim, Suwon-shi, KR;
Kwan-woong Song, Songnam-shi, KR;
Seong-taek Hwang, Pyongtaek-shi, KR;
Tae-sung Park, Yongin-shi, KR;
Se-Hong Park, Seoul, KR;
Sang-Ho Kim, Suwon-shi, KR;
Kwan-Woong Song, Songnam-shi, KR;
Seong-Taek Hwang, Pyongtaek-shi, KR;
Tae-Sung Park, Yongin-shi, KR;
Samsung Electronics, Suwon-Si, KR;
Abstract
An automatic gain controller for controlling gain values of an optical fiber amplifier. The automatic gain controller includes a first opto-electric conversion unit for converting a portion of optical signals that are input into the optical fiber amplifier into electrical signals to output the converted electrical signals. A second opto-electric conversion unit converts a portion of output optical signals output from the optical fiber amplifier into electrical signals and then outputs the converted electrical signals. A transient suppressing unit generates pulse typed waveforms when a change in channel number is generated during monitoring outputs of the first opto-electric conversion unit, and a comparing unit compares the sum of output signals of the transient suppressing unit and output signals of the first opto-electric conversion unit with output signals of the second opto-electric conversion unit. A control unit outputs pump control signals in response to the output signals of the transient suppressing unit and output signals of the comparing unit, and a first pumping light source unit supplies pumping light to the optical fiber amplifier in response to the inputting of the pump control signals.