title: Observation of nonlinear surface waves in modulated waveguide arrays.
abstract: We describe theoretically and study experimentally nonlinear surface waves at the edge of a modulated waveguide array with a surface defect and a self-defocusing nonlinearity. We fabricate such structures in a LiNbO(3) crystal and demonstrate the beam switching to different output waveguides with a change of the light intensity due to nonlinear coupling between the linear surface modes supported by the array.
authors.affiliation: Nonlinear Physics Centre and Laser Physics Centre, Research School of Physics and Engineering,Australian National University, Canberra, ACT 0200, Australia. qixycn@gmail.com
authors.forename: Xinyuan
authors.initials: X
authors.lastname: Qi
authors.forename: Ivan L
authors.initials: IL
authors.lastname: Garanovich
authors.forename: Zhiyong
authors.initials: Z
authors.lastname: Xu
authors.forename: Andrey A
authors.initials: AA
authors.lastname: Sukhorukov
authors.forename: Wieslaw
authors.initials: W
authors.lastname: Krolikowski
authors.forename: Arnan
authors.initials: A
authors.lastname: Mitchell
authors.forename: Guoquan
authors.initials: G
authors.lastname: Zhang
authors.forename: Dragomir N
authors.initials: DN
authors.lastname: Neshev
authors.forename: Yuri S
authors.initials: YS
authors.lastname: Kivshar