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为实现光信号的有效传输,研究了DCF（色散补偿光纤）和FBG（光纤布拉格光栅）的基本原理,利用Optisystem软件对基于RZ（归零）码调制格式的单信道传输系统中的两种色散补偿方法进行仿真,分别比较了前置补偿和后置补偿的色散补偿性能,并在此基础上提出了FBG中间色散补偿。仿真结果表明,采用FBG中间色散补偿后系统的Q值均高于另外两种色散补偿方式。进一步采用中间补偿的级联FBG模块作为波分复用系统的色散补偿器件,利用Optisystem软件对此补偿方法进行仿真,结果表明,该方法在长距离传输时仍能保持良好的补偿效果。

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