发明名称 |
Optical communication system |
摘要 |
Signal light with a specific wavelength is transmitted and extracted from signal light multiplexed by a WDM method, and a light detection unit detects the signal light detected by an optical tunable filter, whose wavelength transmission characteristic varies depending on a control signal. An operation circuit generates information for designating a control signal needed to enable the optical tunable filter to extract signal light with a designated wavelength, based on the detected results of two segments of signal light located at each edge of a wavelength band obtained by shifting the wavelength transmission characteristic of the optical tunable filter from outside the wavelength band including all segments of the entire WDM signal. A driving circuit generates a control signal according to the designation information. |
申请公布号 |
EP1453236(B1) |
申请公布日期 |
2016.09.07 |
申请号 |
EP20040004434 |
申请日期 |
2004.02.26 |
申请人 |
FUJITSU LIMITED |
发明人 |
KAI, YUTAKA;MIYATA, HIDEYUKI |
分类号 |
H04B10/29;H04J14/02;H04B10/07;H04B10/27;H04B10/275;H04B10/291;H04J14/00 |
主分类号 |
H04B10/29 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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