Asymmetric W-shaped and M-shaped soliton pulse generated from a weak modulation in an exponential dispersion decreasing fiber

doi:10.1088/1674-1056/26/12/120503

中国物理B ›› 2017, Vol. 26 ›› Issue (12): 120503-120503.doi: 10.1088/1674-1056/26/12/120503

Asymmetric W-shaped and M-shaped soliton pulse generated from a weak modulation in an exponential dispersion decreasing fiber

Xiang-Shu Liu(刘祥树), Li-Chen Zhao(赵立臣), Liang Duan(段亮), Zhan-Ying Yang(杨战营), Wen-Li Yang(杨文力)

1. School of Physics, Northwest University, Xi'an 710069, China;
2. Faculty of Science, Qinzhou University, Qinzhou 535000, China;
3. Shaanxi Key Laboratory for Theoretical Physics Frontiers, Xi'an 710069, China;
4. Institute of Modern Physics, Northwest University, Xi'an 710069, China

收稿日期:2017-07-25 修回日期:2017-08-17 出版日期:2017-12-05 发布日期:2017-12-05
通讯作者: Zhan-Ying Yang E-mail:zyyang@nwu.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 11475135), the Fund from Shaanxi Province Science Association of Colleges and Universities (Grant No. 20160216), and Guangxi Provincial Education Department Research Project, China (Grant No. 2017KY0776).

Asymmetric W-shaped and M-shaped soliton pulse generated from a weak modulation in an exponential dispersion decreasing fiber

Xiang-Shu Liu(刘祥树)^1,2, Li-Chen Zhao(赵立臣)^1,3, Liang Duan(段亮)^1,3, Zhan-Ying Yang(杨战营)^1,3, Wen-Li Yang(杨文力)^3,4

1. School of Physics, Northwest University, Xi'an 710069, China;
2. Faculty of Science, Qinzhou University, Qinzhou 535000, China;
3. Shaanxi Key Laboratory for Theoretical Physics Frontiers, Xi'an 710069, China;
4. Institute of Modern Physics, Northwest University, Xi'an 710069, China

Received:2017-07-25 Revised:2017-08-17 Online:2017-12-05 Published:2017-12-05
Contact: Zhan-Ying Yang E-mail:zyyang@nwu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 11475135), the Fund from Shaanxi Province Science Association of Colleges and Universities (Grant No. 20160216), and Guangxi Provincial Education Department Research Project, China (Grant No. 2017KY0776).

摘要/Abstract

摘要： We study localized waves on continuous wave background in an exponential dispersion decreasing fiber with two orthogonal polarization states. We demonstrate that asymmetric W-shaped and M-shaped soliton pulse can be generated from a weak modulation on continuous wave background. The numerical simulation results indicate that the generated asymmetric soliton pulses are robust against small noise or perturbation. In particular, the asymmetric degree of the asymmetric soliton pulse can be effectively controlled by changing the relative frequency of the two components. This character can be used to generate other nonlinear localized waves, such as dark-antidark and antidark-dark soliton pulse pair, symmetric W-shaped and M-shaped soliton pulse. Furthermore, we find that the asymmetric soliton pulse possesses an asymmetric discontinuous spectrum.

关键词: asymmetric soliton pulse, asymmetric discontinuous spectrum, exponential dispersion decreasing fiber

Abstract: We study localized waves on continuous wave background in an exponential dispersion decreasing fiber with two orthogonal polarization states. We demonstrate that asymmetric W-shaped and M-shaped soliton pulse can be generated from a weak modulation on continuous wave background. The numerical simulation results indicate that the generated asymmetric soliton pulses are robust against small noise or perturbation. In particular, the asymmetric degree of the asymmetric soliton pulse can be effectively controlled by changing the relative frequency of the two components. This character can be used to generate other nonlinear localized waves, such as dark-antidark and antidark-dark soliton pulse pair, symmetric W-shaped and M-shaped soliton pulse. Furthermore, we find that the asymmetric soliton pulse possesses an asymmetric discontinuous spectrum.

Key words: asymmetric soliton pulse, asymmetric discontinuous spectrum, exponential dispersion decreasing fiber

中图分类号: (Solitons)

05.45.Yv

42.65.Tg (Optical solitons; nonlinear guided waves) 42.81.Dp (Propagation, scattering, and losses; solitons)

刘祥树, 赵立臣, 段亮, 杨战营, 杨文力. Asymmetric W-shaped and M-shaped soliton pulse generated from a weak modulation in an exponential dispersion decreasing fiber[J]. 中国物理B, 2017, 26(12): 120503-120503.

Xiang-Shu Liu(刘祥树), Li-Chen Zhao(赵立臣), Liang Duan(段亮), Zhan-Ying Yang(杨战营), Wen-Li Yang(杨文力). Asymmetric W-shaped and M-shaped soliton pulse generated from a weak modulation in an exponential dispersion decreasing fiber[J]. Chin. Phys. B, 2017, 26(12): 120503-120503.

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Asymmetric W-shaped and M-shaped soliton pulse generated from a weak modulation in an exponential dispersion decreasing fiber

Asymmetric W-shaped and M-shaped soliton pulse generated from a weak modulation in an exponential dispersion decreasing fiber

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