In this article, the novel reconfigurable all-optical switches are designed with ultracompact size, fast response time and high extinction ratio. The hybrid silicon (Si) and phase change material of Germanium−Antimony−Tellurides (GST) based nanoresonator coupled photonic crystal platform is used to realize the 1 × 1, 2 × 2, 3 × 3, and 4 × 4 switches. The GST-based nano-rods are playing a very significant role in “ON” and “OFF” states of the optical switch which can be triggered by changing the phase of the material. The introduction of GST rods within nanocavity provide high output power at the amorphous state and very low output power at the crystalline state, which in turn provide a very high extinction ratio. The designed nanoswitch is optimized through the Finite-Difference-Time-Domain (FDTD) method. The non-volatile 1 × 1 nanoswitch is designed with a low footprint of 44 µm2, the low delay time of 293.86 femtoseconds (fs) and high data rate of 3.40 Tbps. Hence, the reported switching platform is more appropriate for photonic interconnects and quantum computing.

中文翻译：

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基于相变纳米材料的可重构光子晶体开关的数值研究

在本文中，新型可重构全光开关具有超紧凑的尺寸、快速的响应时间和高消光比。基于锗-锑-碲化物（GST）纳米谐振器耦合光子晶体平台的混合硅（Si）和相变材料用于实现1×1、2×2、3×3和4×4开关。基于 GST 的纳米棒在光开关的“开”和“关”状态中起着非常重要的作用，可以通过改变材料的相位来触发。在纳米腔内引入 GST 棒在非晶态下提供高输出功率，在结晶态下提供非常低的输出功率，从而提供非常高的消光比。设计的纳米开关通过有限差分时域 (FDTD) 方法进行了优化。非易失性 1 × 1 纳米开关设计为具有 44 µm2 的低占用空间、293.86 飞秒 (fs) 的低延迟时间和 3.40 Tbps 的高数据速率。因此，报告的交换平台更适合光子互连和量子计算。