期刊
APPLIED MATHEMATICS AND COMPUTATION
卷 368, 期 -, 页码 -出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.amc.2019.124768
关键词
Birefringent optical fiber; Vector nonlinear schrodinger equation; Modulation instability; Breather fission and fusion; Breathers in chaotic wave fields
资金
- National Natural Science Foundation of China [11772017, 11272023, 61973042, 11471050]
- Fund of State Key Laboratory of Information Photonics and Optical Communications (Beijing University of Posts and Telecommunications), China [IPOC:2017ZZ05]
- Fundamental Research Funds for the Central Universities of China [2011BUPTYB02]
- Beijing University of Posts and Telecommunications Excellent PH.D. Students Foundation [CX2018217]
Investigation is made on a vector nonlinear Schrodinger equation in the anomalous dispersion regime describing the optical pulses in a birefringent optical fiber or in a wavelength division multiplexed system. We derive the analytical breather solutions. Fission and fusion of the breathers are investigated via the relation between the phase velocity and group velocity of the plane wave. Stability of the numerical breather is studied via the pseudospectral method: The breather with the white noise propagates stably. Breathers in the chaotic wave fields are derived via the split-step Fourier method: The breathers in the positive x axis are observed more distinctly than in the negative, where x is the spatial coordinate. Complex eigenvalue is gotten to study those phenomena. Effects of the modulation instability on the breathers in the chaotic wave fields are investigated. (C) 2019 Elsevier Inc. All rights reserved.
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