光子晶体光纤中非线性自陡峭对高阶孤子传输的影响

Nonlinear Self-steepening Impact on High-order Soliton Transmission in Photonic Crystal Fiber

采用对称分步傅里叶法数值模拟了高阶孤子在自陡峭效应的影响下,脉冲传输特性及脉冲和频谱展宽情况。另外,讨论了存在自陡峭的情况下,初始正啁啾在反常色散区,导致脉冲初始窄化,然后脉冲将有较强的展宽。初始负啁啾加强脉冲展宽。

This paper using the symmetrical split-step Fourier′ method simulates the pulse of high-order solitons transmission characteristic in self-steepening effect and broadening of pulse and spectrum situation.Otherwise,discussed under the existence of self-steepening circumstances,initial positive chirped in the anomalous dispersion section,lead pulse initial narrowing,then there will be strong pulse broadening.The initial negative chirped strengthen pulse broadening.