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GaN based µLED drive circuit for visible light communication (VLC) with improved linearity using on-chip optical feedback

Zuhdi, Ahmad Wafi Mahmood and McKendry, Jonathan J.D. and Henderson, Robert K. and Gu, Erdan and Dawson, Martin D. and Underwood, Ian (2017) GaN based µLED drive circuit for visible light communication (VLC) with improved linearity using on-chip optical feedback. In: Proceedings of the 2016 IEEE Region 10 Conference (TENCON). Proceedings of IEEE Region Ten Conference . IEEE, Piscataway, N.J., pp. 3394-3397. ISBN 9781509025961

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Abstract

Solid-state lighting is a rapidly developing field. Visible Light Emitting Diodes (LEDs) are becoming more efficient, have high reliability and can be incorporated into many lighting applications. LED is predicted to become the main source of general illumination due to its high energy efficiency. Such source can also modulate at high speed, thus offering a prospect of illumination and communications simultaneously. Various modulation techniques have been employed such as OOK and OFDM, where the latter has shown ability to transmit into Gb/s region. However, OFDM requires high linearity response from the driver's optical power output. In this paper, we present a drive circuit for GaN μLED which employs on-chip optical feedback technique to suppress non-linearity of the optical power output from the μLED for Visible Light Communication (VLC) with OFDM modulation.

Item type: Book Section
ID code: 61425
Keywords: visible light emitting diodes, GaN, OFDM modulation, on-chip optical feedback, visible light communication, μLED drive circuit, optical feedback, wide band gap semiconductors, gallium compounds, Optics. Light, Atomic and Molecular Physics, and Optics
Subjects: Science > Physics > Optics. Light
Department: Faculty of Science > Physics > Institute of Photonics
Technology and Innovation Centre > Photonics
Depositing user: Pure Administrator
Date deposited: 31 Jul 2017 15:05
Last modified: 31 Jul 2017 15:05
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URI: https://strathprints.strath.ac.uk/id/eprint/61425
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