中国物理B ›› 2018, Vol. 27 ›› Issue (3): 30201-030201.doi: 10.1088/1674-1056/27/3/030201

• GENERAL •    下一篇

Solitary wave for a nonintegrable discrete nonlinear Schrödinger equation in nonlinear optical waveguide arrays

Li-Yuan Ma(马立媛), Jia-Liang Ji(季佳梁), Zong-Wei Xu(徐宗玮), Zuo-Nong Zhu(朱佐农)   

  1. 1 Department of Applied Mathematics, Zhejiang University of Technology, Hangzhou 310023, China;
    2 School of Mathematics, Physics and Statistics, Shanghai University of Engineering Science, Shanghai 201620, China;
    3 School of Mathematical Sciences, Shanghai Jiao Tong University, Shanghai 200240, China
  • 收稿日期:2017-08-24 修回日期:2017-12-25 出版日期:2018-03-05 发布日期:2018-03-05
  • 通讯作者: Zuo-Nong Zhu E-mail:znzhu@sjtu.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11671255 and 11701510), the Ministry of Economy and Competitiveness of Spain (Grant No. MTM2016-80276-P (AEI/FEDER, EU)), and the China Postdoctoral Science Foundation (Grant No. 2017M621964).

Solitary wave for a nonintegrable discrete nonlinear Schrödinger equation in nonlinear optical waveguide arrays

Li-Yuan Ma(马立媛)1, Jia-Liang Ji(季佳梁)2, Zong-Wei Xu(徐宗玮)3, Zuo-Nong Zhu(朱佐农)3   

  1. 1 Department of Applied Mathematics, Zhejiang University of Technology, Hangzhou 310023, China;
    2 School of Mathematics, Physics and Statistics, Shanghai University of Engineering Science, Shanghai 201620, China;
    3 School of Mathematical Sciences, Shanghai Jiao Tong University, Shanghai 200240, China
  • Received:2017-08-24 Revised:2017-12-25 Online:2018-03-05 Published:2018-03-05
  • Contact: Zuo-Nong Zhu E-mail:znzhu@sjtu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11671255 and 11701510), the Ministry of Economy and Competitiveness of Spain (Grant No. MTM2016-80276-P (AEI/FEDER, EU)), and the China Postdoctoral Science Foundation (Grant No. 2017M621964).

摘要: We study a nonintegrable discrete nonlinear Schrödinger (dNLS) equation with the term of nonlinear nearest-neighbor interaction occurred in nonlinear optical waveguide arrays. By using discrete Fourier transformation, we obtain numerical approximations of stationary and travelling solitary wave solutions of the nonintegrable dNLS equation. The analysis of stability of stationary solitary waves is performed. It is shown that the nonlinear nearest-neighbor interaction term has great influence on the form of solitary wave. The shape of solitary wave is important in the electric field propagating. If we neglect the nonlinear nearest-neighbor interaction term, much important information in the electric field propagating may be missed. Our numerical simulation also demonstrates the difference of chaos phenomenon between the nonintegrable dNLS equation with nonlinear nearest-neighbor interaction and another nonintegrable dNLS equation without the term.

关键词: nonintegrable dNLS equation, solitary waves, chaos, nonlinear nearest-neighbor interaction

Abstract: We study a nonintegrable discrete nonlinear Schrödinger (dNLS) equation with the term of nonlinear nearest-neighbor interaction occurred in nonlinear optical waveguide arrays. By using discrete Fourier transformation, we obtain numerical approximations of stationary and travelling solitary wave solutions of the nonintegrable dNLS equation. The analysis of stability of stationary solitary waves is performed. It is shown that the nonlinear nearest-neighbor interaction term has great influence on the form of solitary wave. The shape of solitary wave is important in the electric field propagating. If we neglect the nonlinear nearest-neighbor interaction term, much important information in the electric field propagating may be missed. Our numerical simulation also demonstrates the difference of chaos phenomenon between the nonintegrable dNLS equation with nonlinear nearest-neighbor interaction and another nonintegrable dNLS equation without the term.

Key words: nonintegrable dNLS equation, solitary waves, chaos, nonlinear nearest-neighbor interaction

中图分类号:  (Integrable systems)

  • 02.30.Ik
05.45.Yv (Solitons)