高阶色散与非线性对高斯脉冲传输特性的影响与讨论

根据孤子脉冲在光纤中传输所遵从的非线性薛定谔方程,对照相关文献和实验给出的数据,对影响孤子脉冲传输的高阶色散和非线性因素进行了综合分析并得到了一些有意义的结论:在啁啾、三阶色散和五阶非线性同时存在的情况下,它们对脉冲的传输特性都会产生很大的影响,这些因素之间存在着相互影响和制约关系。数值模拟表明,当啁啾、三阶色散和五阶非线性选取某一准临界值时,它们对脉冲存在着增益效应和整形作用。本文所得的结论对光孤子通信的实践过程具有一定的参考意义。

Analysis and discussions of high order chromatic dispersion and non-linearity on the Gauss chirp pulse propagation

By the non-linear Schrdinger equation which satisfies the optical soliton propagation,according to the data of literature and the experiment,high order dispersion and non-linearity affect the orphan pulse transmission analyzed and obtained some meaningful conclusions:when the chirp,high-order chromatic dispersion and the fifth-order simultaneously existing,they can affect the pulse transmission characteristic very tremendous,and between these factors exist the mutual influence and the restriction relations.The numerical simulation indicated that when the parameter of the chirp,high-order chromatic dispersion and the fifth-order selected some value,they have the gain effect and the reshaping effect to the pulse.These conclusions obtained in this article has certain reference significance to the optical soliton communications's practice process.