中文摘要：

以包含增益色散、增益饱和、三阶色散、自陡峭、自频移等高阶效应的光纤放大器为研究对象,对其产生渐近抛物型自相似脉冲的条件及传输特性进行了详细的讨论。结果表明,合理选择系统参数,在渐近约束条件下,可以获得不同振幅和脉宽大小的自相似脉冲;此外,非线性增益（或吸收）与非线性谱宽限制在自相似脉冲存在的范围内近似成线性比例关系,且脉冲的有效脉宽,功率,峰值振幅及能量的大小及增长速度也将随参数的变化而变化。相关结果将为实验中调节光纤放大器以及系统参数的选择提供一定的理论参考。

英文摘要：

Based on optical fiber amplifier with the gain dispersion, gain saturation, third-order dispersion （TOD） , self-steepening, and self-frequency shift, the generating conditions and transmission performances of asymptotic parabolic pulse are discussed in detail. The results show that the self-similar pulse with required amplit Otherwise, the ude and width can be obtained when the system parameters are reasonably chosen. nonlinear gain or absorption parameter and the nonlinear spectrum width limit parameter are linearly proportional within the existence scope of self-similar pulse. And the values and growth rates of the effective width, the power, the peak amplitude as well as the intensity change with the variation of the system parameters. These results will provide theoretical references for adjusting the optical fiber amplifier and choosing system parameters reasonably.