期刊
SUPERLATTICES AND MICROSTRUCTURES
卷 111, 期 -, 页码 326-334出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.spmi.2017.06.046
关键词
Solitons; Quintic nonlinearity; Gerdjikov-lvanov model
资金
- National Science Foundation for Young Scientists of Wuhan Donghu University
Exact soliton solutions in a class of derivative nonlinear Schrodinger equations including a pure quintic nonlinearity are investigated. By means of the coupled amplitude-phase formulation, we derive a nonlinear differential equation describing the evolution of the wave amplitude in the non-Kerr quintic media. The resulting amplitude equation is then solved to get exact analytical chirped bright, kink, antikink, and singular soliton solutions for the model. It is also shown that the nonlinear chirp associated with these solitons is crucially dependent on the wave intensity and related to self-steepening and group velocity dispersion parameters. Parametric conditions on physical parameters for the existence of chirped solitons are also presented. These localized structures exist due to a balance among quintic nonlinearity, group velocity dispersion, and self-steepening effects. (C) 2017 Elsevier Ltd. All rights reserved.
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