低双折射光纤的调制不稳定性  

Modulation Instability in Weak Birefringence Fibers

作　　者：余华清[1] 郭开惠[1] 姜向东[1] 

机构地区：[1]西南交通大学应用物理系

出　　处：《激光与红外》2004年第3期219-221,共3页Laser & Infrared

基　　金：西南交通大学基础发展研究基金资助(2002B03)

摘　　要：利用连续波在光纤中传播时满足的非线性薛定谔耦合方程,研究了CW波在低双折射光纤的正、反常色散区产生的调制不稳定性。结果表明:调制不稳定性的特征由入射功率和偏振不稳定性的阈值功率的关系决定,增益谱的峰值随着入射功率的变化,大小和位置也发生变化。By using the coupled nonlinear Schr?dinger(NLS)equation of the propagation of continuous wave(CW) in a fiber, modulation instability induced by the propagation of CW in normal and anomalous dispersion regime is studied. The results show that the character of modulation instability (MI) depends on the relationship between input power and polarized threshold power, and the maximum value and location of the gain spectra is different when power of input pulse is invariable.

关 键 词：双折射 调制不稳定性 增益谱 光纤损耗 

分 类 号：TN929.11[电子电信—通信与信息系统]