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对一个光纤通信系统来讲,色散影响的大小与发光源波长的上下波动(即谱线宽度)及其中心波长、信号的传输速度、传输距离和所用的光纤有关.尤其是对码速高达数百兆毕每秒的信号进行数十千米的中继距离传输时,色散的影响就会很大.如将码速为400Mb/s的NRZ信号(宽度为2.5ns的光脉冲信号),用
For a fiber optic communication system, the size of the dispersion affects the wavelength of the light source (ie the width of the line) and its center wavelength, the transmission speed of the signal, the transmission distance and the fiber used, 100 Mbps Bias per second signal transmission distance of tens of kilometers relay, the dispersion will be greatly affected.If the code rate of 400Mb / s NRZ signal (width of 2.5ns optical pulse signal), with