Real-time ultraviolet communication system with SPAD as the receiver

The novel ultraviolet photodetector single-photon avalanche diode (SPAD) boasts high integration, robust shock resistance, and elevated sensitivity. In contrast to the bulky and fragile photomultiplier tube (PMT), SPAD presents a wider spectrum of practical utility. In this study, we will investigate a newly developed SiC SPAD to explore its signal output characteristics and, for the first time, implement the construction of a real-time ultraviolet communication system using SPADs.