利用动态载流子恢复时间可以精确模拟基于交叉增益调制的SOA全光波长变换器的饱和增益效应 ,本文将SOA分段ASE噪音功率和分段动态模型结合 ,得到沿长度分布的ASE噪音功率 ,并讨论了偏置电流、泵浦光和探测光的波长、功率、SOA长度对消光比和信噪比的影响 理论计算结果表明 ,大的偏置电流有利于提高消光比和信噪比 ;对于一定的输入波长 ,相对较大的泵浦光和相对较小的探测光变换效果好 ;SOA的长度存在最佳值 The dynamic carrier recovery time can accurately simulate the gain effect of the SOA all-optical wavelength converter based on the cross-gain modulation. In this paper, the ASE noise power along the length distribution is obtained by combining the ASE noise power of the SOA segment with the dynamic model of the segment, The effects of bias current, pump wavelength and probe wavelength, power and SOA length on extinction ratio and signal-to-noise ratio are discussed. The theoretical calculation results show that large bias current is beneficial to increase extinction ratio and signal-to-noise ratio A certain input wavelength, a relatively large pump light and relatively small probe light transform effect is good; the length of the SOA there is the best value