Optical solitons supported by finite waveguide lattices with diffusive nonlocal nonlinearity  

作　　者：Changming Huang Hanying Deng Liangwei Dong Ce Shang Bo Zhao Qiangbo Suo Xiaofang Zhou 黄长明;邓寒英;董亮伟;尚策;赵波;索强波;周小芳(Department of Electronic Information and Physics,Changzhi University,Changzhi 046011,China;School of Photoelectric Engineering,Guangdong Polytechnic Normal University,Guangzhou 510665,China;Department of Physics,Shaanxi University of Science&Technology,Xi’an 710021,China;King Abdullah University of Science and Technology(KAUST),Physical Science and Engineering Division(PSE),Thuwal 23955-6900,Saudi Arabia)

机构地区：[1]Department of Electronic Information and Physics,Changzhi University,Changzhi 046011,China [2]School of Photoelectric Engineering,Guangdong Polytechnic Normal University,Guangzhou 510665,China [3]Department of Physics,Shaanxi University of Science&Technology,Xi’an 710021,China [4]King Abdullah University of Science and Technology(KAUST,Physical Science and Engineering Division(PSE,Thuwal 23955-6900,Saudi Arabia

出　　处：《Chinese Physics B》2021年第12期424-429,共6页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant No.11704339);the Applied Basic Research Program of Shanxi Province,China(Grant No.201901D211466);the Natural Science Basic Research Plan in Shaanxi Province of China(Grant No.2019JM-307);the Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi(STIP),China(Grant Nos.2019L0896 and 2019L0905)。

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 selfbending 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.

关 键 词：optical solitons diffusive nonlocal nonlinearity linear stability analysis 

分 类 号：O431.2[机械工程—光学工程]