We demonstrate, for the first time to our knowledge, all-optical switching with a contrast ratio of 7:1 based on the cascaded second-order nonlinearity. We performed the switching experiments in a nonlinear hybrid Mach–Zehnder interferometer, using a nonuniformly temperature-tuned lithium niobate channel waveguide in an operating regime of small fundamental depletion.
© 1995 Optical Society of America
Original Manuscript: April 17, 1995
Published: November 1, 1995
Y. Baek, R. Schiek, and G. I. Stegeman, "All-optical switching in a hybrid Mach–Zehnder interferometer as a result of cascaded second-order nonlinearity," Opt. Lett. 20, 2168-2170 (1995)