文章介绍了光纤通信系统中的受激布里渊散射(SBS)、四波混频(FWM)效应和自相位调制(SPM)效应这几种重要的非线性效应，分析了其产生机理及在实际应用中对系统性能的影响。从几种非线性效应的基本原理出发，采用理论分析与模拟计算相结合的方法，研究了影响几种非线性效应的主要因素，并给出了相应的抑制消除方法。

This paper introduces a few important nonlinear effects in fiber-optic communication systems, such as Stimulated Brillouin Scattering (SBS), FWM and SPM and analyzes the mechanism for their generation and the effects on the system performances in practical applications. On the basis of the basic principles of the above effects, it investigates the primary factors by theoretical analysis in combination with numerical simulation. Finally, it gives the appropriate methods for suppressing and eliminating them.