色散平坦光纤中类自孤子脉冲传播特性  

Propagation of autosoliton-like pulses in dispersion-flattened fibers

作　　者：周青春[1] 刘生[1] 

机构地区：[1]江苏科技大学数理学院

出　　处：《江苏科技大学学报（自然科学版）》2010年第2期210-212,共3页Journal of Jiangsu University of Science and Technology:Natural Science Edition

基　　金：江苏省高校自然科学基金资助项目(2008SL063J)

摘　　要：采用变分法研究了sech2形状的脉冲在色散平坦光纤中传播的脉宽、幅值和频率啁啾演化特征.给出了计入4阶色散效应严格的拉格朗日密度函数及参量变分方程组,通过定性分析和数值计算讨论了脉冲周期性演化和单调演化的条件.Variational approach was applied to the study of evolution of width,amplitude and frequency chirp of a sech2-type pulse during its propagation in a dispersion-flattened fiber.The exact Lagrangian density function taking the fourth-order dispersion into account and the corresponding varational equations for the pulse parameters were given.Furthermore,the conditions for periodic and monotonous evolution of the pulse were discussed by a qualitative analysis and numerical calculations.

关 键 词：色散平坦光纤 变分法 自孤子 

分 类 号：O431[机械工程—光学工程]