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2. 发明公开

EP0762677A2 Optical communication system which determines the spectrum of a wavelength division multiplexed signal and performs various processes in accordance with the determined spectrum 失效
标题翻译：与测量与波分复用和处理的信号的频谱的光传输系统依赖于频谱
公开(公告)号：EP0762677A2
公开(公告)日：1997-03-12
申请号：EP96113542.3
申请日：1996-08-23
申请人： FUJITSU LIMITED
发明人： Onaka, Hiroshi, c/o Fujitsu Ltd. , Otsuka, Kazue, c/o Fujitsu Ltd. , Miyata, Hideyuki, c/o Fujitsu Ltd.
IPC分类号： H04B10/145 , H04J14/02
CPC分类号： H04J14/0221 , H04B10/077 , H04B10/0795 , H04B10/07953 , H04B10/07955 , H04B10/07957 , H04B10/0799 , H04B10/506 , H04B10/564 , H04B10/572 , H04J14/0284 , H04J14/0297
摘要： An optical communication system for transmitting wavelength division multiplexed (WDM) signal light through an optical fiber. The optical communication system includes a decoupling unit and a monitoring unit. The decoupling unit decouples a portion of the WDM signal light from the optical fiber as a monitoring signal. The monitoring unit determines the spectrum of the WDM signal light from the monitoring signal and performs control processing in accordance with the determined spectrum. Control processing includes performing at least one of the following: (1) controlling light sources to maintain a constant wavelength of each light signal in the WDM signal light, (b) determining a noise figure of an optical amplifier which amplifies the WDM signal light, (c) controlling the optical amplifier to achieve a desired noise figure, (d) detecting a signal-to-noise ratio of the WDM signal light, (e) detecting a true signal power of the WDM signal light, (f) maintaining the true signal power to be at a constant level, (g) counting the number of channels in the WDM signal light, (h) equalizing the gain of an optical amplifier to maintain a flat gain, (i) selecting a light source from among redundant light sources for providing a light signal on a respective channel of the WDM signal light, or (j) selecting a respective channel of the WDM signal light for signal enhancement.
摘要翻译：用于通过光纤发射波分复用（WDM）信号光的光通信系统。光通信系统包括：去耦单元和监视单元。去耦单元解耦从光纤作为监测信号中的WDM信号光的一部分。监视单元确定性地雷从监视信号的WDM信号光的光谱和在雅舞蹈的控制处理与所述确定性开采光谱。控制处理包括：执行以下中的至少一个：（1）控制光源以维持在WDM信号光的每个光信号的恒定波长，（b）中确定的采矿，放大所述WDM信号光的光放大器的噪声系数，（c）控制所述光放大器以实现期望的噪声系数，（d）检测所述WDM信号光的信噪比，（e）检测所述WDM信号光的真实信号功率，（F）维护真信号功率是在一个恒定的水平，（G）进行计数的WDM信号光信道数目，（H）均衡光放大器的增益，以保持平坦的增益，（i）选择从冗余中的光源光源用于对WDM信号光，或（j）选择为信号增强的WDM信号光的信道respectivement的respectivement信道提供的光信号。

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