利用电驱动超小 GST 相变材料实现非易失性波导传输调谐

Nonvolatile waveguide transmission tuning with electrically-driven ultra-small GST phase-change material.

作者信息

Zhang Hanyu, Zhou Linjie, Xu Jian, Wang Ningning, Hu Hao, Lu Liangjun, Rahman B M A, Chen Jianping

机构信息

State Key Laboratory of Advanced Optical Communication Systems and Networks, Shanghai Key Laboratory of Navigation and Location Services, Shanghai Institute for Advanced Communication and Data Science, Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.

出版信息

Sci Bull (Beijing). 2019 Jun 15;64(11):782-789. doi: 10.1016/j.scib.2019.04.035. Epub 2019 May 3.

DOI:10.1016/j.scib.2019.04.035

PMID:36659548

Abstract

Low-power reconfigurable optical circuits are highly demanded to satisfy a variety of different applications. Conventional electro-optic and thermo-optic refractive index tuning methods in silicon photonics are not suitable for reconfiguration of optical circuits due to their high static power consumption and volatility. We propose and demonstrate a nonvolatile tuning method by utilizing the reversible phase change property of GST integrated on top of the silicon waveguide. The phase change is enabled by applying electrical pulses to the μm-sized GST active region in a sandwich structure. The experimental results show that the optical transmission of the silicon waveguide can be tuned by controlling the phase state of GST.

摘要

低功耗可重构光电路对于满足各种不同应用的需求非常关键。硅光子学中的传统电光和热光折射率调谐方法因其高静态功耗和波动性，不适用于光电路的重构。我们提出并演示了一种利用集成在硅波导顶部的 GST 的可逆相变特性的非易失性调谐方法。通过向三明治结构中微米尺寸的 GST 有源区施加电脉冲来实现相变。实验结果表明，通过控制 GST 的相态可以调节硅波导的光传输。