线双折射光纤与正交极化孤子碰撞的研究

Numerical Studies on Collisions of Orthogonally Polarized Sol itons in Birefringent Optical Fibers

从描述线双折射光纤中ｐｓ量级孤子脉冲的归一化ＮＬＳ方程出发，利用对称分步傅里叶变换计算方法，分析和归纳了正交极化孤子在双折射光纤中的碰撞数值特性，并对相关结论作了粗略探讨。

A set of nonlinear coupled equations describing the propagation of picosecond pulses in linearly birefringent optical fibers are derived from the Maxwell equations in the frequency domain. The numerical approach is given, then the collisions of orthogonally polarized fundamental solitons in birefringent fibers are investigated numerically. The effect of initial separation of the two solitons on the soliton collisions is analyzed. In addition, a transition region between trap and separate region is also found. The collisions in the transition region are resonant.