title: Soliton drift, rebound, penetration, and trapping at the interface between media with uniform and spatially modulated nonlinearities.
abstract: We numerically study soliton dynamics at the interface between media with uniform and periodically modulated self-focusing nonlinearities. We find that the soliton can spontaneously laterally drift if its power is large enough. The drift direction can be controlled by changing the sign of the nonlinear modulation coefficient. We also study the dynamics of soliton launched with a tilt angle toward the nonlinear interface and reveal unique features, such as soliton rebound, penetration, and trapping.
authors.affiliation: Department of Physics, Centre for Nonlinear Studies, and The Beijing-Hong Kong-Singapore Joint Centre for Nonlinear and Complex Systems, Hong Kong Baptist University, Kowloon Tong, Hong Kong, China. yjhe@hkbu.edu.hk
authors.forename: Yingji
authors.initials: Y
authors.lastname: He
authors.forename: Dumitru
authors.initials: D
authors.lastname: Mihalache
authors.forename: Bambi
authors.initials: B
authors.lastname: Hu