【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
【机 构】
：
内蒙古大学物理科学与技术学院,内蒙古广播电视大学教务处,
论文部分内容阅读
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。
Based on the nonlinear Schrödinger equation with Raman effect and self-steep effect in high birefringent fiber, the evolution of two orthogonal polarization components of the soliton was simulated by fast step-fourier transform, and the Raman gain and self The Effect of Steepness on Soliton Trapping. The results show that when the group velocity mismatch is small, the Raman gain increases the soliton capture threshold; when the group velocity mismatch is larger, the Raman gain destroys the soliton transmission. Self-steepness has a significant effect when the group velocity mismatch is large, where energy transfer takes place at the fast axis slow axis and the two pulses capture each other when the input pulse amplitude N is large.
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