Optical Wireless Communication System Based on a Perovskite Fluorescent Antenna

Fluorescent antennas have been proposed as a crucial component of optical wireless communications (OWC) systems, offering significant advantages over traditional receivers, including a large field of view (FOV) and enhanced optical gain (OG). This paper presents a novel fluorescent antenna by embedding perovskite nanocrystals（NCs） into a plastic optical fiber. This method can maintain the stability of MAPbBr 3 NCs, making it easy to couple with other photodiodes. The antenna is characterized in terms of its structural properties, material composition, color conversion ability, and data transmission capabilities. Experimental results demonstrate that the antenna incorporating MAPbBr 3 NCs can efficiently transform light into the green region, with a low lifetime of 1.18 ns. The theoretical bandwidth of this material is predicted to reach 230.6 MHz. The fiber structure of the antennas provides a wide 360 ° circular working capacity and a horizontal working capacity of ±80 °. Based on a high‐power ultraviolet laser (bandwidth of 32.7 MHz), a fluorescent antenna system with a commercial detector as the receiver is demonstrated. The measured −3 dB bandwidth of the antenna reaches 11.4 MHz, with a data rate exceeding 15 Mbps. Finally, a wireless audio transmission is demonstrated.