Gbps Long-Distance Real-Time Visible Light Communications Using a High-Bandwidth GaN-Based Micro-LED

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...

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Bibliographic Details
Published in:IEEE photonics journal 2017-12, Vol.9 (6), p.1-9
Main Authors: Liu, Xiaoyan, Tian, Pengfei, Wei, Zixian, Yi, Suyu, Huang, Yuxin, Zhou, Xiaolin, Qiu, Zhi-Jun, Hu, Laigui, Fang, Zhilai, Cong, Chunxiao, Zheng, Lirong, Liu, Ran
Format: Article
Language:English
Subjects:
Bandwidth
Bit error rate
Forward error correction
free-space
GaN
high-speed
Light emitting diodes
long-distance
micro-LED
Modulation
NRZ-OOK
real-time
Real-time systems
Visible light communication
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Summary: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.
ISSN:1943-0655
1943-0647
DOI:10.1109/JPHOT.2017.2775648