摘要
通过对双模光纤的传输方程进行数值求解 ,从理论上验证了在不考虑群速度失配的情况下 ,在光纤两个模式上相互作用的非线性色散光波之间 ,存在着由相交相位调制 (CPM)所引起的调制不稳定 (MI) .由理论输出谱线进行分析得出 ,MI效应产生的参量四波混频 (FWM)效应的参量 Stokes边带和反 Stokes边带将对普通的受激喇曼散射 (SRS)产生明显的抑制 。
By solving numerically the transmission equations in fibers,we testify the existence of cross\|phase\|modulation\|induced modulational instability (MI) in the absence of group\|velocity mismatch between the interacting waves of two modes. By analysisng the theoretical output spectra of fibers,we draw a conclusion that a parametric four\|wave mixing (FWM) process with the MI effects in a two\|mode fiber involving parametric Stokes and anti\|Stokes sidebands inhabits the growth of the ordinary Raman Stokes radiation. Furthermore,we discuss the influence of the input power on the inhabition effects.
出处
《武汉大学学报（自然科学版）》
CSCD
2000年第3期359-361,共3页
Journal of Wuhan University(Natural Science Edition)
基金
国家自然科学基金!(3997020 3)资助项目
