Electro-optic mode switch based on lithium-niobate Mach–Zehnder interferometer

Abstract

We propose an electro-optic mode switch based on an optical waveguide Mach–Zehnder interferometer fabricated with $x$-cut lithium niobate by the annealed proton exchange process. The device can switch between the fundamental mode and the higher-order mode with a low driving voltage. Our typical fabricated device, which has a total length of $\sim 24\mathrm{mm}$, shows a mode extinction ratio of $\sim 35\mathrm{dB}$ and a 20-dB bandwidth of $\sim 12\mathrm{nm}$ at the wavelength 1552 nm, when driven at a voltage of 1.7 V at 26°C. High performance can be obtained at any wavelength in the $C+L$ band with a driving voltage varying by no more than 3 V. The proposed mode switch is easy to fabricate and could find applications in reconfigurable mode-division-multiplexing systems.

© 2016 Optical Society of America

Broadband 2 × 2 lithium niobate electro-optic switch based on a Mach–Zehnder interferometer with counter-tapered directional couplers

Hangli Wang, Xuepeng Li, Mengruo Zhang, and Kaixin Chen
Appl. Opt. 56(29) 8164-8168 (2017)

Design of optical reversible logic gates using electro-optic effect of lithium niobate based Mach–Zehnder interferometers

Santosh Kumar, Chanderkanta, and Sanjeev Kumar Raghuwanshi
Appl. Opt. 55(21) 5693-5701 (2016)

16 × 16 non-blocking silicon optical switch based on electro-optic Mach-Zehnder interferometers

Liangjun Lu, Shuoyi Zhao, Linjie Zhou, Dong Li, Zuxiang Li, Minjuan Wang, Xinwan Li, and Jianping Chen
Opt. Express 24(9) 9295-9307 (2016)

Mode switch based on electro-optic long-period waveguide grating in lithium niobate

Wei Jin and Kin Seng Chiang
Opt. Lett. 40(2) 237-240 (2015)

Electro-Optic Long-Period Waveguide Gratings in Lithium Niobate

W. Jin, K. S. Chiang, and Q. Liu
Opt. Express 16(25) 20409-20417 (2008)