Abstract

We report on intensity-dependent switching in lithium niobate directional couplers. Large nonlinear phase shifts that are due to cascading detune the coupling between the coupler branches, which makes all-optical switching possible. Depending on the input intensity, the output could be switched between the cross and the bar coupler branches with a switching ratio of 1:5 and a throughput of 80%.

© 1996 Optical Society of America

Nonlinear directional coupler in periodically poled lithium niobate

R. Schiek, L. Friedrich, H. Fang, G. I. Stegeman, K. R. Parameswaran, M.-H. Chou, and M. M. Fejer
Opt. Lett. 24(22) 1617-1619 (1999)

All-optical switching in two cascaded nonlinear directional couplers

J. S. Aitchison, A. Villeneuve, and G. I. Stegeman
Opt. Lett. 20(7) 698-700 (1995)

Direct measurement of cascaded nonlinearity in lithium niobate channel waveguides

R. Schiek, M. L. Sundheimer, D. Y. Kim, Y. Baek, G. I. Stegeman, H. Seibert, and W. Sohler
Opt. Lett. 19(23) 1949-1951 (1994)

Electro-optic mode-selective switch based on cascaded three-dimensional lithium-niobate waveguide directional couplers

Mengruo Zhang, Kaixin Chen, Wei Jin, Jieyun Wu, and Kin Seng Chiang
Opt. Express 28(24) 35506-35517 (2020)

All-optical switching in a hybrid Mach–Zehnder interferometer as a result of cascaded second-order nonlinearity

Y. Baek, R. Schiek, and G. I. Stegeman
Opt. Lett. 20(21) 2168-2170 (1995)