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Visible light communication using a blue GaN µLED and fluorescent polymer colour converter

Chun, Hyunchae and Manousiadis, Pavlos and Rajbhandari, Sujan and Vithanage, Dimali A. and Faulkner, Graheme and Tsonev, Dobroslav and McKendry, Jonathan James Donald and Videv, Stefan and Xie, Enyuan and Gu, Erdan and Dawson, Martin D. and Haas, Harald and Turnbull, Graham A. and Samuel, Ifor D. W. and O'Brien, Dominic C. (2014) Visible light communication using a blue GaN µLED and fluorescent polymer colour converter. IEEE Photonics Technology Letters, 26 (20). 2035 - 2038. ISSN 1041-1135

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Abstract

This letter presents a novel technique to achieve high-speed visible light communication (VLC) using white light generated by a blue GaN (mu ) LED and a yellow fluorescent copolymer. We generated white light suitable for room illumination by optimizing the ratio between the blue electroluminescence of the (mu ) LED and yellow photoluminescence of the copolymer color converter. Taking advantage of the components’ high bandwidth, we demonstrated 1.68 Gb/s at a distance of 3 cm (at 240 lx illumination). To the best of our knowledge, this is the fastest white light VLC results using a single blue LED/color converter combination.