1.3 GHz E-O bandwidth GaN-based micro-LED for multi-gigabit visible light communication

作     者：LEI WANG ZIXIAN WEI CHIEN-JU CHEN LAI WANG H.Y.FU LI ZHANG KAI-CHIA CHEN MENG-CHYI WU YUHAN DONG ZHIBIAO HAO YI LUO 

作者机构：Beijing National Research Center for Information Science and Technology(BNRist)Department of Electronic EngineeringTsinghua UniversityBeijing 100084China Tsinghua-Berkeley Shenzhen Institute(TBSI)Tsinghua UniversityShenzhen 518055China Shenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055China Institute of Electronics EngineeringTaiwan Tsing Hua UniversityHsinchu 30013TaiwanChina 

出 版 物：《Photonics Research》 (光子学研究（英文版）)

年 卷 期：2021年第9卷第5期

页      面：792-802页

核心收录：

学科分类：08[工学] 0803[工学-光学工程] 

基　　金：National Key Research and Development Program of China(2016YFB0401803) National Natural Science Foundation of China(61822404,61974080) Shenzhen Science and Technology Innovation Commission(JCYJ20180507183815699) Tsinghua-Berkeley Shenzhen Institute(TBSI)Faculty Start-up Fund Shenzhen Fundamental Research Project(JCYJ20170817161720819) Overseas Research Cooperation Fund of Tsinghua Shenzhen International Graduate School(HW2018003) 

主　　题：communication visible light 

摘      要：The data rate of a visible light communication(VLC) system is basically determined by the electrical-to-optical(E-O) bandwidth of its light-emitting diode(LED) source. In order to break through the intrinsic limitation of the carrier recombination rate on E-O bandwidth in conventional c-plane LEDs based on In Ga N quantum wells,a blue micro-LED with an active region of nano-structured In Ga N wetting layer is designed, fabricated, and packaged to realize a high-speed VLC system. The E-O bandwidth of the micro-LED can reach up to 1.3 GHz. Based on this high-speed micro-LED, we demonstrated a data rate of 2 Gbps with a bit error rate(BER) of 1.2×10^(-3) with simple on-off keying signal for a 3-m real-time VLC. In addition, a 4-Gbps VLC system using quadrature phase shift keying-orthogonal frequency-division multiplexing with a BER of 3.2×10^(-3) is also achieved for the same scenario. Among all the point-to-point VLC systems based on a single-pixel LED,this work has the highest distance-bandwidth product of 3 GHz·m and the highest distance-rate product of 12 Gbps·m.