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

Ahmad Wafi Mahmood Zuhdi, Jonathan J.D. McKendry, Robert K. Henderson, Erdan Gu, Martin D. Dawson, Ian Underwood

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

2 Citations (Scopus)


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.
Original languageEnglish
Title of host publicationProceedings of the 2016 IEEE Region 10 Conference (TENCON)
Place of PublicationPiscataway, N.J.
Number of pages4
ISBN (Electronic)9781509025961
ISBN (Print)9781509025985
Publication statusPublished - 9 Feb 2017
Event2016 IEEE Region 10 Conference - Singapore, Singapore
Duration: 22 Nov 201625 Nov 2016

Publication series

NameProceedings of IEEE Region Ten Conference
ISSN (Electronic)2159-3450


Conference2016 IEEE Region 10 Conference
Abbreviated titleTENCON 2016


  • 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


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