有损色散渐变光纤中孤子串的产生

Generation of Soliton Trains in Dispersion Decreasing Fiber with Loss

本文给出了超短脉冲在有损耗的色散渐变光纤中所满足的准非线性薛定谔方程，通过数值模拟，较全面地分析了双频差拍光信号在这种光纤中形成孤子串的过程，分析指出，计及和忽略损耗，脉冲率的传播行为有明显不同，因此损耗不能轻易忽略。

The quasi-NLS equation describing propagation of ultrashort pulses in dispersion decreasing fiber is obtained. Using numerical simulation, a complete analysis is made for the generation of soliton trains in such fiber with dual-frequency beat-signal as input. The performance shows quite different when fiber loss is taken into account,so neglect of loss must be cautious.