双模光纤中参量FWM对Stokes光子的抑制  

Parametric Four-Wave Mixing Effects and Suppression of Stimulated Raman Scattering in Two-Mode Optical Fibers

作　　者：王凯[1] 宋克辉[2] 熊贵光[1] 

机构地区：[1]武汉大学物理学系,武汉430072 [2]北京理工大学物理学系,北京100081

出　　处：《武汉大学学报（自然科学版）》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

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.

关 键 词：双模光纤 参量四波混频 FWM Stokes光子 抑制 

分 类 号：TN25[电子电信—物理电子学] TN929.11