中文摘要：

从高双折射光纤中含有拉曼效应和自陡峭效应的非线性薛定谔方程出发,利用快速分步傅里叶变换,模拟了孤子的两个正交偏振分量的演化,分析了拉曼增益和自陡峭效应对孤子俘获的影响。结果发现：当群速度失配较小时,拉曼增益增大了孤子俘获的阈值;当群速度失配较大时,拉曼增益破坏了孤子传输。自陡峭在群速度失配较大时才有明显的影响,此时快轴向慢轴发生能量转移,且当输入脉冲振幅N较大时,两脉冲彼此俘获。

英文摘要：

Based on the coupled nonlinear Schrodinger equation including Raman gain and self-steepening effect in high birefringence fiber,the evolution of two orthogonal polarization components of soliton has been simulated utlizing the fractional Fourier method,and then the impact of Raman gain and self-steepening effect on soliton trapping has been analyzed.The results show that Raman gain increases the soliton trapping threshold when the value of group velocity mismatch is small and it destroys the transmission of soliton pulse when the value of group velocity mismatch is large.The impact of self-steepning effect is obvious only when value of group velocity mismatch is large.On this condition,the energy transfers from fast axis to slow axis,and one of the two orthogonal polarization components is trapped by another when Nis large.