Journal
APPLIED MATHEMATICS AND COMPUTATION
Volume 361, Issue -, Pages 325-331Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.amc.2019.05.046
Keywords
Solitons; Soliton interactions; Analytic solution; Coupled nonlinear Schrodinger equation
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Funding
- National Natural Science Foundation of China [11705130, 11547149]
- Beijing Youth Top-notch Talent Support Program [20170 0 0 026833ZK08]
- Fund of State Key Laboratory of Information Photonics and Optical Communications (Beijing University of Posts and Telecommunications) [IPOC2017ZZ05]
- Chutian Scholar Program of Hubei Government in China
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The analytic multi-soliton solutions for nonlinear Schrodinger (NLS) equations are complex to obtain. Based on those solutions, interactions among multiple solitons show more abundant characteristics than two soliton interactions. With the Hirota method, bilinear forms and analytic soliton solutions of the coupled NLS equation are derived, and the influences of the dispersion parameter beta(x) and constant parameters p(1), p(2) and p(3) on soliton interactions are discussed in detail. The novel triple-S structures are presented via choosing suitable values. The phase, intensity and incidence angles of dark solitons are controlled with appropriate constant parameters. Besides, bound states of dark solitons are observed with different periods. In addition, the peculiar triple-triangle structures are presented when one sets beta(x) as the hyperbolic tangent function. Results in this paper are useful for the generation and interaction of optical solitons in nonlinear optics and ultrafast optics. (C) 2019 Elsevier Inc. All rights reserved.
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