期刊
NONLINEAR DYNAMICS
卷 90, 期 2, 页码 1269-1275出版社
SPRINGER
DOI: 10.1007/s11071-017-3725-5
关键词
Vector multipole solitons; Vector vortex solitons; Cubic-quintic nonlinearity; Spatially modulated nonlinearity
资金
- Zhejiang Provincial Natural Science Foundation of China [LY17A040011, LY17F050011]
- National Natural Science Foundation of China [11404289, 11375007]
A (2+1)-dimensional N-coupled nonlinear Schrodinger equation with spatially modulated cubic-quintic nonlinearity and transverse modulation is studied, and vector multipole and vortex soliton solutions are analytically obtained. When the modulation depth q is chosen as 0 and 1, vector multipole and vortex solitons are constructed, respectively. The number of petals for the multipole solitons and vortex solitons is related to the value of the topological charge m, and the number of layers in the multipole solitons and vortex solitons is determined by the value of the soliton order number n.
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