双模光纤中参量FWM对Stokes光子的抑制

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 王凯 WANG Kai 1 1 2 first-author 宋克辉 SONG Ke\|hui 2 1 2 熊贵光 XIONG Gui\|guang 1 1 2 武汉大学物理学系,武汉,430072 武汉大学物理学系,武汉,430072 Department of Physics,Wuhan University Department of Physics,Wuhan University 北京理工大学物理学系,北京,100081 北京理工大学物理学系,北京,100081 Department of Physics,Beijing Institute of Technology Department of Physics,Beijing Institute of Technology 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 ,并讨论了输入光功率对此抑制效应的影响 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. 双模光纤 调制不稳定 参量四波混频 two-mode optical fiber modulational instability parametric four-wave mixing 10.14188/j.1671-8836.2000.03.027 TN929.11 国家自然科学基金!（3997020 3）资助项目 2000-03-01 2021-04-01 3