色散位移光纤中Kerr系数的随机扰动对光孤子传输的影响

Effects of Kerr coefficient distributing randomly on the propagation of optical soliton in dispersion-shifted fiber

从描述色散位移光纤中Kerr系数随机扰动影响下皮秒光孤子的修正非线性薛定谔 (NLS)方程出发 ,利用对称分步Fourier方法 ,数值研究了光孤子在Kerr系数随机扰动情况下的传输演化特性。结果表明 ,Kerr系数的随机扰动使单孤子幅值随传输距离产生了微小波动 ;对两孤子传输的影响主要表现在孤子间相互作用被加强。研究结果还表明 。

The properties of propagation of picoseconds optical soliton described by modified nonlinear Schrdinger equation with Kerr coefficient distributing randomly in dispersion-shifted fiber are studied by using symmetrical slit-step Fourier numerical method.The results show that the amplitude of single soliton is fluctuated slightly in the course of propagation,and that the interaction between solitons is strengthened due to Kerr coefficient distributing randomly.It is also show that launching adjacent solitons with unequal amplitudes can suppress the interaction of solitons.