Replication Data for: Phototunable chip-scale topological photonics: 160 Gbps waveguide and demultiplexer for THz 6G communication

The revolutionary 5G cellular systems represent a breakthrough in the communication network design to provide a single platform for enabling enhanced broadband communications, virtual reality, autonomous driving, and the internet of everything. However, the ongoing massive deployment of 5G networks has unveiled inherent limitations that have stimulated the demand for innovative technologies with a vision toward 6G communications. Terahertz (0.1-10 THz) technology has been identified as a critical enabler for 6G communications with the prospect of massive capacity and connectivity. Nonetheless, existing terahertz on-chip communication devices suffer from crosstalk, scattering losses, limited data speed, and insufficient tunability. Here, we demonstrate a new class of phototunable, on-chip topological terahertz devices consisting of a broadband single-channel 160 Gbit/s communication link and a silicon Valley Photonic Crystal based demultiplexer. The optically controllable demultiplexing of two different carriers modulated signals without crosstalk is enabled by the topological protection and a critically coupled ultra-high-Q cavity. As a proof of concept, we demultiplexed high spectral efficiency 40 Gbit/s signals and demonstrated real-time streaming of uncompressed high-definition (HD) video (1.5 Gbit/s) using the topological photonic chip. Phototunable silicon topological photonics will augment complementary metal oxide semiconductor (CMOS) compatible terahertz technologies, vital for accelerating the development of 6G communications and real-time terabits per second wireless connectivity for network sensing, holographic communication, and cognitive internet of everything革命性的5G蜂窝系统在通信网络设计领域实现突破性进展，可为增强型宽带通信、虚拟现实、自动驾驶以及万物互联（Internet of Everything）提供统一支撑平台。然而，当前大规模部署的5G网络暴露出固有局限性，由此催生了面向6G通信的创新技术研发需求。太赫兹（Terahertz, 0.1-10 THz）技术已被认定为6G通信的关键赋能技术，有望实现超大容量与全域连接。尽管如此，现有太赫兹片上通信器件仍存在串扰、散射损耗、数据速率受限以及调谐能力不足等问题。本研究展示了一类新型光可调谐片上拓扑太赫兹器件，其包含一条宽带单通道160 Gbit/s通信链路，以及一款基于硅基谷光子晶体（Valley Photonic Crystal）的解复用器。该器件依托拓扑保护与临界耦合的超高Q值谐振腔，可实现两种载波调制信号的无串扰光控解复用。作为概念验证，我们成功解复用了高频谱效率的40 Gbit/s信号，并基于该拓扑光子芯片实现了未压缩高清（HD）视频（1.5 Gbit/s）的实时流传输。光可调谐硅基拓扑光子学技术将增强兼容互补金属氧化物半导体（CMOS）工艺的太赫兹技术性能，这对于加速6G通信发展，以及面向网络感知、全息通信、认知万物互联的实时太比特每秒无线连接技术研发至关重要。