Open AccessGbps Long-Distance Real-Time Visible Light Communications Using a High-Bandwidth GaN-Based Micro-LED
Author(s) -
Xiaoyan Liu,
Pengfei Tian,
Zixian Wei,
Suyu Yi,
Yuxin Huang,
Xiaolin Zhou,
Zhi-Jun Qiu,
Laigui Hu,
Zhilai Fang,
Chunxiao Cong,
Lirong Zheng,
Ran Liu
Publication year - 2017
Publication title -
ieee photonics journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.725
H-Index - 73
eISSN - 1943-0655
pISSN - 1943-0647
DOI - 10.1109/jphot.2017.2775648
Subject(s) - engineered materials, dielectrics and plasmas , photonics and electrooptics
In this investigation, we experimentally demonstrated a high-speed Gbps long distance real-time visible light communication system based on non-return-to-zero on-off keying modulation by using a high-bandwidth Gallium nitride-based micro-LED with a modulation bandwidth of 230 MHz and a size of 40 μm x 40 μm. The maximum real-time data rate obtained is up to 1.3 Gbps at a 3 m free-space transmission distance with a bit-error rate (BER) of 3.4 x 10-3 and 1 Gbps at a 10 m distance with a BER of 3.2 x 10-3, both of which are underneath the forward error correction threshold of 3.8 x 10-3 required for free-error operation. In addition, when the transmission distance is increased to 16 m in free space through reflecting the emission light beam by blue reflectors mounted on the wall, a data rate of 0.87 Gbps with a BER of 3.5 x 10-3 is achieved successfully.