微扰DNLS/MNLS孤子绝热演化的计算
Calculating adiabatic evolution of the perturbed DNLS/MNLS solitons
摘要：
本文发展了一种符号计算方法，用于计算DNLS/MNLS孤子参数的绝热演化方程，该方程是由最近发展起来的直接微扰理论[X. J. Chen和J. Yang，Phys. Rev. E { \bf 65}，066608（2002）]。作为例子，研究了脉冲内拉曼散射、三阶群速度色散和具有非线性增益的窄带滤波器对MNLS孤子的影响。
英文摘要：
A symbolic computation technique is developed to calculate adiabatic evolution equations for parameters of the perturbed DNLS/MNLS solitons obtained by the recently developed direct perturbation theory [X.-J. Chen and J. Yang, Phys. Rev. E {\bf 65}, 066608(2002)]. Effects of the intrapulse Raman scattering, third-order group velocity dispersion, and narrow-banded filters with nonlinear gain on the MNLS solitons are studied as examples.
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