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Localized Optical Waves in Defocusing Regime of Negative-Index Materials |
Wen-Hao Xu1,2, Zhan-Ying Yang1,2**, Chong Liu1,2**, Wen-Li Yang2,3 |
1School of Physics, Northwest University, Xi'an 710069 2Shaanxi Key Laboratory for Theoretical Physics Frontiers, Xi'an 710069 3Institute of Modern Physics, Northwest University, Xi'an 710069
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Cite this article: |
Wen-Hao Xu, Zhan-Ying Yang, Chong Liu et al 2017 Chin. Phys. Lett. 34 100501 |
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Abstract We study optical localized waves on a plane-wave background in negative-index materials governed by the defocusing nonlinear Schrödinger equation with self-steepening effect. Important characteristics of localized waves, such as the excitations, transitions, propagation stability, and mechanism, are revealed in detail. An intriguing sequential transition that involves the rogue wave, antidark–dark soliton pair, antidark soliton and antidark soliton pair can be triggered as the self-steepening effect attenuates. The corresponding phase diagram is established in the defocusing regime of negative-index materials. The propagation stability of the localized waves is confirmed numerically. In particular, our results illuminate the transition mechanism by establishing the exact correspondence between the transition and the modulation instability analysis.
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Received: 08 May 2017
Published: 27 September 2017
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PACS: |
05.45.Yv
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(Solitons)
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41.20.Jb
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(Electromagnetic wave propagation; radiowave propagation)
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42.65.-k
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(Nonlinear optics)
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78.20.Bh
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(Theory, models, and numerical simulation)
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Fund: Supported by the National Natural Science Foundation of China under Grant Nos 11475135, 11547302, 11434013 and 11425522. |
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