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由半导体光放大器速率方程及泵浦光、探测光在放大器中的传输方程，建立了交叉增益调制波长转换器中转换速率与输出消光比关系的小信号理论模型，并在不同泵浦光功率下进行了数值计算，分析表明转换速率对输出消光比有重要影响，为研究波长转换器的消光比特性提供了理论依据
The small-signal theoretical model of the relationship between slew rate and output extinction ratio in the cross-gain modulation wavelength converter is established from the equation of the speed of the semiconductor optical amplifier and the transmission equation of the pump light and the probe light in the amplifier. At different pump light powers The numerical results show that the conversion rate has an important influence on the extinction ratio of the output, which provides a theoretical basis for studying the extinction ratio of the wavelength converter