超短DM光孤子系统中自频移影响及其抑制方法  

Effect of the Self-frequency Shift in Ultrashort DMS System and its Suppression Method

作　　者：诸波[1] 杨祥林[1] 

机构地区：[1]南京邮电大学光通信研究所

出　　处：《南京邮电大学学报（自然科学版）》2009年第4期26-30,共5页Journal of Nanjing University of Posts and Telecommunications：Natural Science Edition

基　　金：国家自然科学基金(60072046)资助项目

摘　　要：针对色散管理孤子系统中孤子幅度、脉宽等参数的动态周期变化特性,采用时域和导频滤波复合控制方法,建立了光脉冲的传输方程,研究了短皮秒DM光孤子系统中控制孤子自频移(SSFS)影响的可行性和有效性,采用变分法分析了高速DM啁啾高斯准孤子在喇曼自频移条件下传输演化特性,采用沿线上导频滤波控制方法,将自频移控制在设计范围内,稳定了孤子中心频率。对40 Gbit/s长距离高速DM孤子传输系统的传输特性进行了数值模拟,所得结果与理论分析完全一致。In allusion to periodic dynamic change of the soliton parameters such as its amplitude and width in dispersion management soliton（DMS） system, the propagation equation is established to investigate the feasibility and the validity of the suppression of soliton self-frequency shift （SSFS） in the subpicosecond soliton system employing compound control method of time domain and frequency domain. Using the variational approach, the evolution of the DMS is analyzed in the presence of intrapulse Raman scattering. The self-frequency shift（SFS） is controlled by up frequency-guiding filter control method and the stability of the system is enhanced. The performances of long-haul DMS transmission systems at the rate of 40Gb/s are numerically simulated and the simulation results are in well accordance with our theoretical analysis.

关 键 词：色散管理孤子 高阶非线性 喇曼自频移 传输控制 稳定传输 

分 类 号：TN929.11[电子电信—通信与信息系统]