二阶孤子间相互作用引起孤子衰变

Soliton Decay Induced by Interaction between Two Neighboring Second-Order Solitons

对于二阶孤子脉冲对 ,通过数值求解非线性Schr dinger方程 ,得到了二阶孤子在光纤中传输时的衰变规律 由于脉冲之间的相互作用 ,原来的二阶孤子衰变为两个分离的基孤子 二阶孤子对同位相时 ,相互作用为“吸引” ,衰变后峰值小的基孤子位于内侧 ,二阶孤子对反位相时 ,相互作用为“排斥” ,衰变后峰值小的基孤子位于外侧 两个二阶孤子脉冲间隔越小 ,反位相时 ,在相同传输距离处 。

The rule of soliton decay induced by interaction between two neighboring Second-order solitons in optical fiber is gained by solving the nonlinear Schrdinger equation numerically.Second-order soliton decays into two separate fundamental solitons because of the interaction between two neighboring second-order solitons.If the second-soliton pair has the same phase,the interaction is 'attractiveness' and the fundamental solitons with lower peak value lie inside,if the second-soliton pair has the opposite phase,the interaction is 'repulsiveness' and the fundamental solitons with lower peak value lie outside. When the second-soliton pair has the opposite phase,the smaller the initial separation of the second-order soliton pair is,the further two separate fundamental solitons decayed from second-order soliton are at the same distance of transmission.