摘要
在孤子传输系统中引进三阶色散微扰,根据非线性薛定谔(NLS)方程,利用变分法对有三阶色散效应扰动的光孤子在光纤中的传输情况进行了研究,并得出了孤子解.结果表明,三阶色散使孤子的中心位置和相位随传输距离作线性漂移,随着三阶色散系数的增大,这种漂移更加厉害,当其增大到一定程度,就会破坏孤子传输的稳定性,甚至导致孤子崩溃.
By importing third-order dispersion effect to the soliton communication system,the evolution properties of the soliton transmitting in the fiber with third-order dispersion effect are studied via solving the nonlinear Schredinger （NLS） equation by making use of variational principle method, and it has derived the soliton solution. It is shown that the centre position and phase drift linearly with the transmission distance. With the increase of third-order dispersion effect, the drift becomes more fierce. When the increase reaches a certain extent, it will undermine the stability of the soliton transmission, and even lead to the collapse of the soliton.
出处
《河南师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2009年第1期78-81,共4页
Journal of Henan Normal University(Natural Science Edition)
关键词
变分法
三阶色散
孤子解
variational principle
third-order dispersion effect
soliton solution
