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Updated: Jul 4, 2026
A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
Published on: September 5, 2019
The theoretical investigation of all-optical polarization switching based on InGaAs(P) Bragg-spaced quantum wells
Tao Wang1, Gang Li, Zheng Chen
1College of Optoelectronic Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China. wangtao@hust.edu.cn
Abstract:
The all-optical polarization switch adopting InGaAsP Bragg-spaced quantum wells (BSQWs) is investigated theoretically because it can be compatible with the optical communication system. The theoretical analysis is based on the transfer matrix approach which provides formalism for studying the optical response of the InGaAsP BSQWs. With this theoretical model we calculate the performance characteristics of the switch, which has a high contrast ratio (~31.1dB), a small insert loss (~13dB), and a small switching energy (~30 M W / cm(2) ). The theory can be used as a basis of experimental research of all-optical spin-dependent polarization switching in BSQWs.
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