This article is cited in 2 papers

Integrated optics

Simulation of an electro-optic modulator based on the quantum-confined Stark effect in a two-layer InAlGaAs rib waveguide on an InP substrate

A. V. Tsarev^ab, R. M. Taziev<sup>a

a</sup> Rzhanov Institute of Semiconductor Physics, Siberian Branch of Russian Academy of Sciences, Novosibirsk
^b Novosibirsk State University

Abstract: An electro-optic Mach–Zehnder modulator based on the quantum-confinement Stark effect in layered multiple-quantum-well InAlGaAs structures on InP substrate is numerically simulated. The novelty of the modulator design is the use of a two-layer rib optical waveguides, which provide technologically efficient (loss of 1.5 dB per element) coupling of the modulator with optical fibre. It is shown that, changing the electrode width and the distance between two waveguides in two Mach–Zehnder interferometer arms, one can match the impedance of the modulator with an external 50-W load and the velocities of microwave and optical waves in the modulator. The results of the study can be used in integrated optics, optical communication, and radiophotonics devices.

Keywords: electro-optic modulator, quantum-confined Stark effect, numerical simulation, integrated optics, radiophotonics.

Received: 10.05.2018
Revised: 20.07.2018

 English version: Quantum Electronics, 2019, 49:3, 266–271

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