中文摘要：

基于忽略相干耦合项的无色散耦合模方程，模拟分析了初始脉冲的啁啾特性及脉冲形状对光克尔脉冲净化器输出脉冲时谱特性及能量透射率等的影响。结果表明，高斯脉冲的时间波形窄化较严重，初始啁啾对时间波形及能量透射率无影响，但对输出光谱影响较大；方波脉冲的时间波形和光谱形状的变化很小，且能量透射率有很大提高。

英文摘要：

The temporal and spectral characteristics of output pulse for an optical pulse cleaner under the input pulses with initial chirps and different shapes were analyzed, by solving the coupling mode equations, which ignored coherent coupling part and neglected chromatic dispersion of the fiber. It was concluded that, the Gauss pulse＇s temporal shape was narrowed seriously after the pulse cleaner, and the initial chirps and the energy transmittance were independent of the initial chirps, but the output spectrum were quite different with the initial chirps. When the temporal shape of the input pulse was square, the output pulse＇s temporal shape and the spectral shape were both changed slightly but the energy transmittance was highly enhanced.