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 

机构地区：[1]Beijing National Research Center for Information Science and Technology(BNRist),Department of Electronic Engineering,Tsinghua University,Beijing 100084,China [2]Tsinghua-Berkeley Shenzhen Institute(TBSI),Tsinghua University,Shenzhen 518055,China [3]Shenzhen International Graduate School,Tsinghua University,Shenzhen 518055,China [4]Institute of Electronics Engineering,Taiwan Tsing Hua University,Hsinchu 30013,Taiwan,China

出　　处：《Photonics Research》2021年第5期792-802,共11页光子学研究（英文版）

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)。

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.

关 键 词：COMMUNICATION VISIBLE light 

分 类 号：TN929.1[电子电信—通信与信息系统] TN312.8[电子电信—信息与通信工程]