High-speed visible light communication systems based on Si-substrate LEDs with multiple superlattice interlayers

作     者：Fangchen Hu Shouqing Chen Yuyi Zhang Guoqiang Li Peng Zou Junwen Zhang Chao Shen Xiaolei Zhang Jian Hu Jianli Zhang Zhixue He Shaohua Yu Fengyi Jiang Nan Chi 

作者机构：Key Laboratory for Information Science of Electromagnetic Waves(MoE)Fudan UniversityShanghai 200433People’s Republic of China National Institute of LED on Silicon SubstrateNanchang UniversityNanchang 330096People’s Republic of China State Key Laboratory of Precision SpectroscopyEast China Normal UniversityShanghai 200241People’s Republic of China State Key Laboratory of Optical Communication Technologies and NetworksChina Information Communication Technologies Group CorporationWuhan 430000People’s Republic of China Peng Cheng LaboratoryShenzhen 518055China. 

出 版 物：《PhotoniX》 (智汇光学（英文）)

年 卷 期：2021年第2卷第1期

页      面：199-216页

核心收录：

学科分类：0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 

基　　金：supported by the NSFC project(No.61925104,No.62031011) Peng Cheng Laboratory project(No.PCL2021A14)and Fudan University-CIOMP Joint Fund 

主　　题：Visible light communication InGaN/GaN LEDs design Silicon photonics Superlattice interlayers 6G 

摘      要：High-speed visible light communication(VLC),as a cutting-edge supplementary solution in 6G to traditional radio-frequency communication,is expected to address the tension between continuously increased demand of capacity and currently limited supply of radio-frequency spectrum *** main driver behind the high-speed VLC is the presence of light emitting diode(LED)which not only offers energy-efficient lighting,but also provides a cost-efficient alternative to the VLC transmitter with superior modulation ***,the InGaN/GaN LED grown on Si substrate is a promising VLC transmitter to simultaneously realize effective communication and illumination by virtue of beyond 10-Gbps communication capacity and Watt-level output optical *** previous parameter optimization of Si-substrate LED,the superlattice interlayer(SL),especially its period number,is reported to be the key factor to improve the lighting performance by enhancing the wall-plug efficiency,but few efforts were made to investigate the influence of SLs on VLC ***,to optimize the VLC performance of Si-substrate LEDs,we for the first time investigated the impact of the SL period number on VLC system through experiments and theoretical *** results show that more SL period number is related to higher signal-to-noise ratio(SNR)via improving the wall-plug *** addition,by using Levin-Campello bit and power loading technology,we achieved a record-breaking data rate of 3.37 Gbps over 1.2-m free-space VLC link under given optimal SL period number,which,to the best of our knowledge,is the highest data rate for a Si-substrate LED-based VLC system.