非线性色散对高斯脉冲传输的影响  

Influence of nonlinear dispersion on Gauss pulse transmission

作　　者：黄峻堃 张少武 万冲 HUANG Junkun;ZHANG Shaowu;WAN Chong(College of Physics and Electronic Science,Hubei Normal University,Huangshi 435000,China)

机构地区：[1]湖北师范大学物理与电子科学学院,湖北黄石435000

出　　处：《量子电子学报》2018年第5期603-607,共5页Chinese Journal of Quantum Electronics

基　　金：国家自然科学基金;11404108;湖北师范大学研究生创新科研基金项目;20170134~~

摘　　要：采用变分法求解含有三阶、五阶非线性项以及Kerr色散项的非线性薛定谔方程(NLSE).推导出不同参数下高斯脉冲参量随传播距离的演化方程.结果表明特定条件下,脉冲在一定距离内以呼吸子的形式稳定传播.在较强的Kerr色散效应下,孤子的强度变化会增大,传播过程中波峰变尖.The nonlinear Schrodinger equation（NLSE） including cubic-quintic nonlinearity and Kerr dispersion term is solved by variational method. Evolution equations of Gaussian pulse parameters versus propagation distance with different parameters are derived. Results show that under certain conditions, the pulses propagate stably in the form of breather within a certain distance. Under the strong Kerr dispersion effect, the intensity change of solitons will increase, and the peaks will become sharp during propagation.

关 键 词：非线性光学 非线性薛定谔方程 高斯脉冲 变分法 Kerr色散 

分 类 号：O437.3[机械工程—光学工程]