根据半导体光放大器的高频滤波效应，利用动态载流子恢复时间的概念，分析了基于半导体光放大器交叉增益调制的全光波长变换器中变换信号的波形、啁啾与探测光功率的关系．理论计算表明，在保持变换信号消光比相同的情况下，在大的探测光功率下，变换信号的波形将变好，并且啁啾对变换信号码间干扰的影响会减小，理论很好地解释了文献中的实验结果． According to the high frequency filtering effect of semiconductor optical amplifier and the concept of dynamic carrier recovery time, the relationship between the waveform and the chirp of the converted signal in the all-optical wavelength converter based on the cross-gain modulation of the semiconductor optical amplifier is analyzed. Theoretical calculations show that under the condition of the same extinction ratio of the transformed signal, the waveform of the transformed signal will be better under a large probe optical power, and the influence of the chirp on the inter-symbol interference of the transformed signal will be reduced. Theoretically, Explain the experimental results in the literature.