强双折射光纤中任意偏振方向矢量调制不稳定性  

Vector modulation instability in an arbitrary polarized direction in strong birefringence fibers

作　　者：贾维国[1] 杨性愉[1] 

机构地区：[1]内蒙古大学物理系,呼和浩特010021

出　　处：《物理学报》2005年第3期1053-1058,共6页Acta Physica Sinica

基　　金：内蒙古自治区自然科学基金 (批准号 :2 0 0 3 0 80 2 0 10 2 )资助的课题 .~~

摘　　要：利用光脉冲在非线性双折射光纤中传播时所遵循的相干耦合非线性薛定谔方程 ,研究了偏振方向与双折射轴成任意角度时 ,在反常色散区和正常色散区所产生的调制不稳定性 .结果表明 ,在反常色散区和正常色散区存在不稳定偏振区域和稳定偏振区域 ,对应不同的不稳定偏振区域 ,输入临界功率不同 ,脉冲有不同的增益谱 .The coherently coupled nonlinear Schrodinger equation of the propagation of a light pulse in a nonlinear birefringence fiber has been utilized. We have studied modulation instability not only in an anomalous dispersion regime but also in a normal dispersion regime when the angle between the polarized direction and the birefringence axes is arbitrary. The results show that the instability polarized region and stability polarized region exist not only in the anomalous dispersion regime but also in the normal dispersion regime. The input pulses have obviously different gain spectra when the instability polarized region and input different power are different.

关 键 词：双折射光纤 偏振方向 调制不稳定性 增益谱 反常色散 光脉冲 非线性薛定谔方程 矢量 耦合 对应 

分 类 号：O436.1[机械工程—光学工程]