標題: Going beyond 4 Gbps data rate by employing RGB laser diodes for visible light communication
作者: Janjua, Bilal
Oubei, Hassan M.
Retamal, Jose R. Duran
Ng, Tien Khee
Tsai, Cheng-Ting
Wang, Huai-Yung
Chi, Yu-Chieh
Kuo, Hao-Chung
Lin, Gong-Ru
He, Jr-Hau
Ooi, Boon S.
光電工程學系
Department of Photonics
公開日期: 13-Jul-2015
摘要: With increasing interest in visible light communication, the laser diode (LD) provides an attractive alternative, with higher efficiency, shorter linewidth and larger bandwidth for high-speed visible light communication (VLC). Previously, more than 3 Gbps data rate was demonstrated using LED. By using LDs and spectral-efficient orthogonal frequency division multiplexing encoding scheme, significantly higher data rates has been achieved in this work. Using 16-QAM modulation scheme, in conjunction with red, blue and green LDs, data rates of 4.4 Gbps, 4 Gbps and 4 Gbps, with the corresponding BER/SNR/EVM of 3.3 x 10(-3)/15.3/17.9, 1.4 x 10-3/16.3/15.4 and 2.8 x 10(-3)/15.5/16.7 were obtained over transmission distance of similar to 20 cm. We also simultaneously demonstrated white light emission using red, blue and green LDs, after passing through a commercially available diffuser element. Our work highlighted that a tradeoff exists in operating the blue LDs at optimum bias condition while maintaining good color temperature. The best results were obtained when encoding red LDs which gave both the strongest received signal amplitude and white light with CCT value of 5835K. (C) 2015 Optical Society of America
URI: http://dx.doi.org/10.1364/OE.23.018746
http://hdl.handle.net/11536/128330
ISSN: 1094-4087
DOI: 10.1364/OE.23.018746
期刊: OPTICS EXPRESS
Volume: 23
Issue: 14
起始頁: 18746
結束頁: 18753
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