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.
出处
《半导体光电》
CAS
CSCD
北大核心
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)
关键词
光子晶体光纤
孤子自俘获
群速度失配
高阶色散
photonic crystal fiber
soliton self-trapping
group velocity mismatching
higher-order dispersion
