在脉冲内拉曼散射效应影响下,研究了同相和反相相邻高阶孤子脉冲之间的相互作用,分析了孤子之间的相互作用对定时抖动的影响和脉冲内拉曼散射效应所引起的孤子脉冲频移.研究结果表明;在脉冲内拉曼散射效应的影响下,同相和反相高阶孤子脉冲对都发生了分裂,分裂出的两个较强的孤子脉冲在传输过程中发生碰撞,碰撞后两脉冲迅速分离;二者的不同之处在于反相孤子脉冲对分裂出来的两个较强脉冲之间的相互作用较弱,其碰撞距离明显远于同相孤子脉冲对.引入非线性增益可以有效控制孤子之间的相互作用,抑制孤子自频移效应,稳定孤子传输.

Under the influence of intrapulse Raman scattering, the interactions between in-phase and out-phase high-order solitons are investigated numerically, and the impacts of soliton interactions to timing jitter and the impacts of Raman effects to soliton frequency shift are analyzed, respectively. It is found that under the influence of intrapulse Raman scattering, in-phase and out-phase soliton pairs are both split. Two split solitons will collide with each other during the propagation and they will be apart from each other after the collision. The difference between in-phase and out-phase soliton pair exists that the interactions of out-phase is weaker than that of in-phase soliton pair and the collision distance of out-phase is much longer than that of in-phase soliton pair. A nonlinear gain can be used to effectively suppress soliton interactions and the effects of intrapulse Raman scattering, and stabilize the soliton propagation