Zhu Shijie, Qiu Pengjiang, Qian Zeyuan, Shan Xinyi, Wang Zhou, Jiang Ke, Sun Xiaojuan, Cui Xugao, Zhang Guoqi, Li Dabing, Tian Pengfei
Opt Lett. 2021 May 1;46(9):2147-2150. doi: 10.1364/OL.423311.
In this Letter, we experimentally achieve high-speed ultraviolet-C (UVC) communication based on a 276.8 nm UVC micro-LED. A record ${-}{{3}};{\rm{dB}}$ optical bandwidth of 452.53 MHz and light output power of 0.854 mW at a current density of ${{400}};{\rm{A/c}}{{\rm{m}}^2}$ are obtained with a chip size of 100 µm. A UVC link over 0.5 m with a data rate of 2 Gbps is achieved using 16-ary quadrature amplitude modulation orthogonal frequency division multiplexing and pre-equalization, and an extended distance over 3 m with a data rate of 0.82 Gbps is also presented. The demonstrated high-speed performance shows that micro-LEDs have great potential in the field of UVC communication.
