中国物理B ›› 2021, Vol. 30 ›› Issue (12): 124204-124204.doi: 10.1088/1674-1056/abf555
Changming Huang(黄长明)1,†, Hanying Deng(邓寒英)2, Liangwei Dong(董亮伟)3, Ce Shang(尚策)4, Bo Zhao(赵波)1, Qiangbo Suo(索强波)1, and Xiaofang Zhou(周小芳)1
Changming Huang(黄长明)1,†, Hanying Deng(邓寒英)2, Liangwei Dong(董亮伟)3, Ce Shang(尚策)4, Bo Zhao(赵波)1, Qiangbo Suo(索强波)1, and Xiaofang Zhou(周小芳)1
摘要: We investigate the properties of fundamental, multi-peak, and multi-peaked twisted solitons in three types of finite waveguide 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.
中图分类号: (Optical solitons; nonlinear guided waves)