Solar-blind deep ultraviolet light communication network

作者：Xinjie Mo, Yingze Liang, Linning Wang, Ziqian Qi, Jiayao Zhou, Lei Zhang, Pengzhan Liu, Jiahao Gou, Yongjin Wang · 发表于：Optics Express · 年份：2025 · DOI：10.1364/oe.570896 · 被引用次数：6 · 研究领域：Optical Wireless Communication Technologies、Impact of Light on Environment and Health、Photocathodes and Microchannel Plates

Owing to its invisible character and low background noise, deep ultraviolet (DUV) light communication has gained much interest over the last few decades. Here, we propose and demonstrate a solar-blind DUV light communication network, wherein the 275 nm light-emitting diodes (LEDs) are employed for the optical transmitters, and the photo-multiplier tube is used as the receiver. Both optical transmitters and receivers are packaged together to establish a two-way DUV light transmission operating under the universal asynchronous receiver/transmitter (UART) protocol. A relay communication node is developed not only to significantly increase the communication distance but also to address complex communication environments. We conducted field experiments to validate the relay functionality of the DUV light communication network in sunlight and demonstrated bidirectional data exchange at 2 Mbps with a bit error rate (BER) below 0.1% over a communication distance of 122 m without the relay node. This work provides a feasible route towards an advanced solar-blind DUV communication network for diverse applications.