分布式PT对称非线性耦合器中光纤孤子间的相互作用

J4 ›› 2016, Vol. 33 ›› Issue (3): 338-342.

分布式PT对称非线性耦合器中光纤孤子间的相互作用

郝瑞宇

长治学院电子信息与物理系，山西长治 046011

收稿日期:2015-04-13 修回日期:2015-07-15 出版日期:2016-05-28 发布日期:2016-05-27

Interaction of optical fiber solitons in the distributed PT-symmetric nonlinear couplers

Ruiyu Hao

Received:2015-04-13 Revised:2015-07-15 Published:2016-05-28 Online:2016-05-27
Contact: Ruiyu Hao

摘要/Abstract

摘要： 为了在光纤孤子的应用装置中讨论孤子稳定性和相互作用，数值地研究了变系数耦合非线性薛定谔方程组。结果发现微孤子相互作用存在于具有周期分布的色散和非线性参量的PT对称非线性耦合器中。而且，在不同初始条件下，包括同相输入的两个或三个等幅孤子，及含反相二孤子输入的三孤子，都存在这样的微孤子相互作用。此外，还讨论了在有限初始扰动下微孤子相互作用的稳定性。结果表明，有限初始扰动不会影响微孤子相互作用的主要特征。

Abstract: In order to discuss the stability and interaction of optical fiber solitons in the application device, two linearly coupled nonlinear Schr?dinger (NLS) equations with variable coefficients were investigated numerically. And the weak soliton interaction in the PT-symmetric nonlinear coupler with periodically distributed dispersion and nonlinearity is presented, under the different initial conditions, including the case of in-phase injection of two or three solitons with equal amplitudes, and the case of in-antiphase injection of two solitons in three solitons. Also, the stability of the weak soliton interaction with respect to the finite initial perturbations was discussed. The results show that the finite initial perturbations could not influence the main character of the weak soliton interaction.

Key words: The weak soliton interaction

中图分类号:

TN929.1

郝瑞宇. 分布式PT对称非线性耦合器中光纤孤子间的相互作用[J]. J4, 2016, 33(3): 338-342.

Ruiyu Hao. Interaction of optical fiber solitons in the distributed PT-symmetric nonlinear couplers[J]. J4, 2016, 33(3): 338-342.

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