We report what is to our knowledge the first experimental evidence of nonlinear beam displacement in a strip-loaded GaAs/AlGaAs multiple-quantum-well waveguide with an asymmetric, nonlinear cladding. An intensity-dependent spatial displacement of ~2 μm was observed for the guided mode at a wavelength of 1.55 μm. Numerical simulations that correspond to the experiment are also presented. The device has the potential of providing a soliton-emission-based, ultrafast all-optical switch.
© 2000 Optical Society of America
(190.4360) Nonlinear optics : Nonlinear optics, devices
(190.4390) Nonlinear optics : Nonlinear optics, integrated optics
(190.4420) Nonlinear optics : Nonlinear optics, transverse effects in
(190.5970) Nonlinear optics : Semiconductor nonlinear optics including MQW
Patrick Dumais, Alain Villeneuve, Amr Saher-Helmy, J. Stewart Aitchison, Lars Friedrich, Russell A. Fuerst, and George I. Stegeman, "Toward soliton emission in asymmetric GaAs/AlGaAs multiple-quantum-well waveguide structures below the half-bandgap," Opt. Lett. 25, 1282-1284 (2000)