PCF中群速度失配和高阶色散对孤子自俘获的影响  

Influences of Group Velocity Mismatch and High-order Dispersion on Soliton Self-trapping in PCF

作　　者：杨世云[1] 余重秀[1] 桑新柱[1] 苑金辉[1] 张锦龙[1] 

机构地区：[1]北京邮电大学光通信与光波技术教育部重点实验室,北京100876

出　　处：《半导体光电》2009年第4期599-601,625,共4页Semiconductor Optoelectronics

基　　金：国家"973"计划项目(2003CB314906);国家"863"计划项目(2007AA03Z477)

摘　　要：基于分步傅里叶方法,仿真研究了光子晶体光纤(PCF)在反常色散区的群速度失配因子δ、高阶色散(主要是三阶色散)对孤子自俘获效应的影响。研究结果表明:随着群速度失配δ的增大,两偏振分量的平均振幅差值也增大,孤子自俘获效应变差;三阶色散量增大时,孤子自俘获效应变差。因此,只有选择合适的特性参数值才可以得到比较好的孤子自俘获效应,此特点可用于实现光开关等光信号处理功能器件。Based on step-by-step Fourier method, the influences of group velocity mismatch factor 8 and high-order dispersion on soliton self-trapping in the photonic crystal fiber is numerically investigated. Results indicate that the average amplitude difference of these two polarization pulses becomes larger with 8 increasing, and soliton self-trapping becomes worse. When 3rd-order dispersion increases, soliton self-trapping becomes worse too. Therefore, good soliton self-trapping can only be achieved by choosing appropriate characteristic parameter values, which is useful for the research of optical signal processing devices.

关 键 词：光子晶体光纤 孤子自俘获 群速度失配 高阶色散 

分 类 号：TN929.11[电子电信—通信与信息系统]