色散缓变光纤中三阶色散对孤子传输特性的影响

Influence on soliton propagation properties in slowly decreasing fibers by third-order dispersion

本文采用行波解法求解了含三阶色散项的色散缓变光纤中的MNLS方程 ,然后对所得到的解进行了理论分析 ,结果得到三阶色散对孤子幅值和相位没有影响 ,它使脉冲展宽 ,使孤子绝热关系不再成立 。

In this paper,the NLSE with third-order dispersion is solved in slowly decreasing fibers by the Travelling Wave Method.According to the solution,the results are obtained:the third-order dispersion has no influence on amplititude and phase,it causes soliton pulse to expand,it causes center position to change nonlinearily.