利用变分法研究了时域和频域的控制技术同步幅度调制器和固定频率滤波器对色散管理孤子系统的作用 .得到了计算定时抖动的解析表达式 ,利用得到的公式 ,可以计算不同控制参量时 ,孤子系统定时抖动的大小 ,从而优化同步幅度调制器和固定频率滤波器的设计 .结果也证明了滤波器对喇曼效应引起的时间抖动的抑制作用 . The variational method is used to study the effect of time-domain and frequency-domain control techniques of synchronous amplitude modulator and fixed frequency filter on the dispersion management soliton system. An analytical expression for calculating the timing jitter is obtained. Using the obtained formula, different control The parameters of the soliton system timing jitters optimize the design of the synchronous amplitude modulator and the fixed frequency filter, and the results also show that the filter suppresses the time jitter caused by the Raman effect.