作者
Ricardo XG Ferreira, Enyuan Xie, Jonathan JD McKendry, Sujan Rajbhandari, Hyunchae Chun, Grahame Faulkner, Scott Watson, Anthony E Kelly, Erdan Gu, Richard V Penty, Ian H White, Dominic C O’Brien, Martin D Dawson
发表日期
2016/6/15
期刊
IEEE Photonics Technology Letters
卷号
28
期号
19
页码范围
2023-2026
出版商
IEEE
简介
Gallium-nitride (GaN)-based light-emitting diodes (LEDs) are highly efficient sources for general purpose illumination. Visible light communications (VLC) uses these sources to supplement existing wireless communications by offering a large, licence-free region of optical spectrum. Here, we report on progress in the development of micro-scale GaN LEDs (micro-LEDs), optimized for VLC. These blue-emitting micro-LEDs are shown to have very high electrical-to-optical modulation bandwidths, exceeding 800 MHz. The data transmission capabilities of the micro-LEDs are illustrated by demonstrations using ON–OFF-keying, pulse-amplitude modulation, and orthogonal frequency division multiplexing modulation schemes to transmit data over free space at the rates of 1.7, 3.4, and 5 Gb/s, respectively.
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RXG Ferreira, E Xie, JJD McKendry, S Rajbhandari… - IEEE Photonics Technology Letters, 2016