PubCard - High-speed visible light communication based on micro-LED: A technology with wide applications in next generation communication

(Peer-Reviewed) High-speed visible light communication based on micro-LED: A technology with wide applications in next generation communication

Tingwei Lu 卢霆威 ¹, Xiangshu Lin 林祥枢 ¹, Wenan Guo 郭文安 ¹, Chang-Ching Tu 杜长庆 ³ ⁴, Shibiao Liu 刘时彪 ¹, Chun-Jung Lin 林俊荣 ⁵, Zhong Chen 陈忠 ¹ ², Hao-Chung Kuo 郭浩中 ³ ⁴, Tingzhu Wu 吴挺竹 ¹ ²

¹ School of Electronic Science and Engineering, Fujian Engineering Research Center for Solid-State Lighting, Xiamen University, Xiamen 361005, China
中国厦门厦门大学电子科学与技术学院福建省固态照明工程研究中心
² Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Xiamen 361005, China
中国厦门福建能源材料科学与技术创新实验室（嘉庚创新实验室）
³ Department of Photonics and Graduate Institute of Electro-Optical Engineering, College of Electrical and Computer Engineering, Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan, China
中国台湾新竹台湾阳明交通大学电机学院光子学系光电工程研究所
⁴ Semiconductor Research Center, Hon Hai Research Institute, Taipei 11492, Taiwan, China
中国台湾台北鸿海研究院半导体研究中心
⁵ Guangdong Visible Light Communication Technology Co., LTD., Foshan 528000, China
中国佛山广东可见光通信科技有限公司

Opto-Electronic Science, 2022-12-29

https://doi.org/10.29026/oes.2022.220020

https://www.oejournal.org/article/doi/10.29026/oes.2022.220020

Abstract

The evolution of next-generation cellular networks is aimed at creating faster, more reliable solutions. Both the next-generation 6G network and the metaverse require high transmission speeds. Visible light communication (VLC) is deemed an important ancillary technology to wireless communication. It has shown potential for a wide range of applications in next-generation communication.

Micro light-emitting diodes (μLEDs) are ideal light sources for high-speed VLC, owing to their high modulation bandwidths. In this review, an overview of μLEDs for VLC is presented. Methods to improve the modulation bandwidth are discussed in terms of epitaxy optimization, crystal orientation, and active region structure. Moreover, electroluminescent white LEDs, photoluminescent white LEDs based on phosphor or quantum-dot color conversion, and μLED-based detectors for VLC are introduced.

Finally, the latest high-speed VLC applications and the application prospects of VLC in 6G are introduced, including underwater VLC and artificial intelligence-based VLC systems.