Zhang Yuqing, Peng Zheng, Wang Zhicheng, Wu Yilu, Hu Yuqi, Wu Jiagui, Yang Junbo
College of Artificial Intelligence, Southwest University, Chongqing 400715, China.
Center of Material Science, National University of Defense Technology, Changsha 410073, China.
Nanomaterials (Basel). 2023 Apr 15;13(8):1375. doi: 10.3390/nano13081375.
Photonic logic gates have important applications in fast data processing and optical communication. This study aims to design a series of ultra-compact non-volatile and reprogrammable photonic logic gates based on the SbSe phase-change material. A direct binary search algorithm was adopted for the design, and four types of photonic logic gates (OR, NOT, AND, and XOR) are created using silicon-on-insulator technology. The proposed structures had very small sizes of 2.4 μm × 2.4 μm. Three-dimensional finite-difference time-domain simulation results show that, in the C-band near 1550 nm, the OR, NOT, AND, and XOR gates exhibit good logical contrast of 7.64, 6.1, 3.3, and 18.92 dB, respectively. This series of photonic logic gates can be applied in optoelectronic fusion chip solutions and 6G communication systems.
光子逻辑门在快速数据处理和光通信中具有重要应用。本研究旨在基于SbSe相变材料设计一系列超紧凑、非易失性且可重新编程的光子逻辑门。设计采用了直接二分搜索算法，并利用绝缘体上硅技术创建了四种类型的光子逻辑门（或门、非门、与门和异或门）。所提出的结构尺寸非常小，为2.4μm×2.4μm。三维时域有限差分模拟结果表明，在1550nm附近的C波段，或门、非门、与门和异或门分别具有7.64、6.1、3.3和18.92dB的良好逻辑对比度。这一系列光子逻辑门可应用于光电融合芯片解决方案和6G通信系统。
