7.4-Gbit/s Visible-Light Communication Utilizing Wavelength-Selective Semipolar Micro-Photodetector

被引：25

作者：

Alkhazragi, Omar ^{[1
]}

Kang, Chun Hong ^{[1
]}

Kong, Meiwei ^{[1
]}

Liu, Guangyu ^{[1
]}

Lee, Changmin ^{[2
]}

Li, Kuang-Hui ^{[1
]}

Zhang, Huafan ^{[1
]}

Wagstaff, Jonathan M. ^{[1
]}

Alhawaj, Fatimah ^{[1
]}

Ng, Tien Khee ^{[1
]}

Speck, James S. ^{[2
]}

Nakamura, Shuji ^{[2
]}

DenBaars, Steven P. ^{[2
]}

Ooi, Boon S. ^{[1
]}

机构：

[1] King Abdullah Univ Sci & Technol, Photon Lab, Thuwal 239556900, Saudi Arabia

[2] Univ Calif Santa Barbara, Mat Dept, Santa Barbara, CA 93106 USA

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2020年 / 32卷 / 13期

关键词：

Optical wireless communication; InGaN/GaN photodetectors; P-I-N; HIGH-SPEED; LINK;

D O I：

10.1109/LPT.2020.2995110

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Visible light communication (VLC) has drawn significant attention in recent years. Though high-speed visible-light sources have seen significant advances, commercially available photodetectors have low wavelength selectivity and modulation bandwidth in the near-violet-blue wavelengths, making them a bottleneck in VLC links. Here we show a record 7.4-Gbit/s visible-light communication link using a wavelength-selective, (20 (21) over bar)-oriented, semipolar InGaN/GaN multiple-quantum-well micro-photodetector (mu PD) on GaN substrate. This is achieved by leveraging on the unique photodetection properties of semipolar mu PDs, combined with an optimized communication system utilizing bit- and power-loading schemes in orthogonal frequency-division multiplexing (OFDM) modulation over a 2-GHz bandwidth. We used a 405-nm violet laser diode transmitter as the responsivity of the mu PD was highest within the responsivity range of 360 - 420 nm. The investigation fully demonstrated the feasibility and favorable choice of semipolar InGaN/GaN mu PDs for multi-Gbit/s optical wireless communication.

引用

页码：767 / 770

页数：4

共 23 条

[1] Dynamic Characterization of III-Nitride-Based High-Speed Photodiodes [J].