期刊
CHINESE PHYSICS B
卷 30, 期 12, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/1674-1056/abf555
关键词
optical solitons; diffusive nonlocal nonlinearity; linear stability analysis
资金
- National Natural Science Foundation of China [11704339]
- Applied Basic Research Program of Shanxi Province, China [201901D211466]
- Natural Science Basic Research Plan in Shaanxi Province of China [2019JM-307]
- Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi (STIP), China [2019L0896, 2019L0905]
We investigated the properties of fundamental, multi-peak, and multi-peaked twisted solitons in finite waveguide lattices with asymmetrical diffusion nonlinearity in photorefractive media. The existence domain of two-peaked twisted solitons can be changed by soliton self-bending signals, and stable two-peaked twisted solitons can be found in a larger region when solitons self-bend toward the waveguide lattice. Three-peaked twisted solitons exhibit stability in different regions based on the lattice depth.
We investigate the properties of fundamental, multi-peak, and multi-peaked twisted solitons in three types of finitewaveguide lattices imprinted in photorefractive media with asymmetrical diffusion nonlinearity. Two opposite soliton self-bending signals are considered for different families of solitons. Power thresholdless fundamental and multi-peaked solitons are stable in the low power region. The existence domain of two-peaked twisted solitons can be changed by the soliton self-bending signals. When solitons tend to self-bend toward the waveguide lattice, stable two-peaked twisted solitons can be found in a larger region in the middle of their existence region. Three-peaked twisted solitons are stable in the lower (upper) cutoff region for a shallow (deep) lattice depth. Our results provide an effective guidance for revealing the soliton characteristics supported by a finite waveguide lattice with diffusive nonlocal nonlinearity.
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