光通信系统中相干暗孤子间的相互作用  

The Interaction between Two Coherent Dark Solitons

作　　者：王艳荣[1] 杨性愉[2] 宋晓琴[2] 

机构地区：[1]内蒙古工业大学信息工程学院电子系,内蒙古呼和浩特010021 [2]内蒙古大学物理学系,内蒙古呼和浩特010021

出　　处：《内蒙古大学学报（自然科学版）》2001年第2期142-146,共5页Journal of Inner Mongolia University：Natural Science Edition

基　　金：国家自然科学基金资助项目

摘　　要：利用最小作用量原理导出非线性 Schrodinger方程两个相干暗孤子之间的相互作用 .它作为孤子间距 Δ和初位相差 θ的函数 ,随 Δ的增大而指数地衰减 ,当两个孤子之间初位相差 θ<π/2时相互排斥 ,θ=π/2时几乎不存在相互作用 .θ>π/2时相互吸引 .The interaction between two coherent dark solitons of nonlinear Schrodinger equation is derived using the least action principle aproach.The interaction as a function of the soliton′s separation Δ and their initial relative phase θ shows that the interaction decreased exponentially as Δ raise,and that two solitons repulse with each other when θ <π/2,and attract with each other when θ >π/2 ,there is almost no interaction when θ =π/2.The influence of high order dispersion effect on the interaction is also studied.

关 键 词：相干暗孤子 最小作用量原理 相互作用 高阶色散效应 光通信系统 孤子间距 光纤孤子 初位相差 

分 类 号：TN253[电子电信—物理电子学]