Micro-LED Based Double-Sided Emission Display and Cross-Medium Communication

• Published in: IEEE photonics journal Vol. 14; no. 3; pp. 1 - 5
• Main Authors: Zhu, Shijie, Qiu, Pengjiang, Shan, Xinyi, Wang, Zhou, Lin, Runze, Cui, Xugao, Zhang, Guoqi, Tian, Pengfei
• Format: Journal Article
• Language: English
• Published: Piscataway IEEE 01-06-2022; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Avalanche photodiodes; Bandwidth; Communication; Cross-medium communication; double-sided emission; Emission; Green products; Lenses; Light emitting diodes; micro-LED; OFDM; Optical communication; Optical transmitters; Signal transmission; Underwater; underwater communication; Voltage
• ISSN: 1943-0655; 1943-0655; 1943-0647
• DOI: 10.1109/JPHOT.2022.3169818

GaN micro-LEDs have been spotlighted as promising candidates for high-speed optical communication, which may become important components in 6G communication blueprint. To achieve a superior network covering sea, land and air for 6G communication, we demonstrated cross-medium communication based on an 80 <inline-formula><tex-math notation="LaTeX">\mu</tex-math></inline-formula>m double-sided emission micro-LED array. The high enough light output power radiated from both sides of the green micro-LED enabled interference-free signal transmission in different media. Data rates of 1.55 Gbps over the 3 m free-space link and 1.11 Gbps over the 3.4 m underwater link could be achieved simultaneously. Furthermore, parallel-connected micro-LEDs were utilized to demonstrate the feasibility of pattern display and communication, and expected to achieve longer communication distances in media such as underwater channels.