- 专利标题: Optical amplifying apparatus, optical amplifying method, and optical communication system
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申请号: US09968892申请日: 2001-10-03
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公开(公告)号: US06570703B2公开(公告)日: 2003-05-27
- 发明人: Makoto Murakami , Motoyoshi Sekiya , Hideto Saito , Hiroaki Tomofuji , Takeshi Sakamoto , Kazuo Yamane
- 申请人: Makoto Murakami , Motoyoshi Sekiya , Hideto Saito , Hiroaki Tomofuji , Takeshi Sakamoto , Kazuo Yamane
- 优先权: JP2000-245695 20000814
- 主分类号: H04B1008
- IPC分类号: H04B1008
摘要:
An optical amplifying apparatus of the present invention comprises a correction part for correcting a predetermined fixed value of an output optical level by a correction amount according to an optical power of amplified spontaneous emission (ASE). The correction amount is, for example, computed by predetermined formulas. According to the present invention, when a WDM optical signal is optically amplified, the output is fixedly amplified for each channel by the correction amount which is a value obtained with the ASE levels taken into consideration, so that a fluctuation in the level of the average optical power of the channels is suppressed even if an optical signal is dropped/added therefrom/thereto during repeated transmissions.