Observation of nonlinear surface waves in modulated waveguide arrays

Qi, Xinyuan; Garanovich, Ivan L; Xu, Zhiyong; Sukhorukov, Andrey; Mitchell, Arnan; Zhang, Guoquan; Neshev, Dragomir; Krolikowski, Wieslaw; Kivshar, Yuri

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Observation of nonlinear surface waves in modulated waveguide arrays

Date

2009-09-15

Authors

Qi, Xinyuan

Garanovich, Ivan L

Xu, Zhiyong

Sukhorukov, Andrey

Mitchell, Arnan

Zhang, Guoquan

Neshev, Dragomir

Krolikowski, Wieslaw

Kivshar, Yuri

Publisher

Optical Society of America

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.