中国物理B ›› 2018, Vol. 27 ›› Issue (3): 30201-030201.doi: 10.1088/1674-1056/27/3/030201
• GENERAL • 下一篇
Li-Yuan Ma(马立媛), Jia-Liang Ji(季佳梁), Zong-Wei Xu(徐宗玮), Zuo-Nong Zhu(朱佐农)
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
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.
中图分类号: (Integrable systems)