All-optical Mode Mixer Spatial Switch Based on Cascading in Lithium Niobate

Y. Baek, R. Schiek, G. Stegeman, G. Assanto, and W. Sohler

Appl. Phys. Lett. 72, 3405-3407 (1998)


An all-optically induced spatial shift in the interference between the two lowest-order modes of a lithium niobate channel waveguide was demonstrated based on the power-dependent nonlinear phase shift induced via quadratic cascading.