Designing fast and efficient electrically driven phase change photonics using foundry compatible waveguide-integrated microheaters
Designing fast and efficient electrically driven phase change photonics using foundry compatible waveguide-integrated microheaters
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DOI：
10.1364/oe.446984
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发表时间：
2022-04-11
期刊：
影响因子：
3.8
通讯作者：
Xiong, Feng
中科院分区：
文献类型：
--
作者：
Erickson, John R.;Shah, Vivswan;Xiong, Feng
相变硫属化物（例如Ge2Sb2Te5（GST））最近使得先进的光学器件能够用于诸如存储器内计算、反射显示器、可调谐超颖表面和可重构光子学的应用。然而，设计具有可靠且有效的电控制的相变光学器件是具有挑战性的，这是由于可逆切换需要高非晶化温度和极快的淬火速率。在这里，我们使用多物理模拟框架来模拟三个波导集成的微加热器，旨在切换光学相变材料。我们探讨的几何形状，掺杂和电脉冲参数的影响，以优化开关速度，并尽量减少这些光学器件的能耗。(C)2022 Optica出版集团根据Optica开放获取出版协议的条款
Phase change chalcogenides such as Ge2Sb2Te5 (GST) have recently enabled advanced optical devices for applications such as in-memory computing, reflective displays, tunable metasurfaces, and reconfigurable photonics. However, designing phase change optical devices with reliable and efficient electrical control is challenging due to the requirements of both high amorphization temperatures and extremely fast quenching rates for reversible switching. Here, we use a Multiphysics simulation framework to model three waveguide-integrated microheaters designed to switch optical phase change materials. We explore the effects of geometry, doping, and electrical pulse parameters to optimize the switching speed and minimize energy consumption in these optical devices. (C) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement