色散和Kerr系数扰动影响下光孤子传输演化的研究  

Effects of dispersion and Kerr coefficient distributing randomly on propagation of optical solitons

作　　者：李俊红[1] 汪仲清[1] 安广雷[1] 

机构地区：[1]重庆邮电学院,重庆400065

出　　处：《重庆邮电学院学报（自然科学版）》2006年第1期34-37,52,共5页Journal of Chongqing University of Posts and Telecommunications(Natural Sciences Edition)

摘　　要：从描述色散位移光纤中Kerr系数随机扰动影响下皮秒光孤子的修正非线性薛定锷(NLS)方程出发,利用对称分步Fourier方法,对光孤子在Kerr系数和群速度色散随机扰动情况下的传输演化特性进行了数值研究。结果表明,Kerr系数的随机扰动使单孤子幅值随传输距离产生了微小波动,对两孤子传输的影响主要表现在孤子间相互作用被加强,同时还表明,群速度色散的随机变化没有加强Kerr系数随机扰动对孤子间相互作用的影响,而是部分地互相抵消。The properties of propagation of picoseconds optical soliton described by modified nonlinear Schrodinger equation with Kerr coefficient and group velocity dispersion distributing randomly in Dispersion-Shifted Fiber are studied by using symmetrical slit-step Fourier numerical method. The results show that the amplitude of single soliton is fluctuated slightly in the course of propagation,and that the interaction between solitons is strengthened due to Kerr coefficient distributing randomly and also show that group velocity dispersion doesn＇t strengthen the interaction of optical solitons but offsets the effect of Kerr coefficient.

关 键 词：三阶色散 KERR系数 群速度色散 随机扰动 

分 类 号：TN929.11[电子电信—通信与信息系统]