1.5 Gbit/s multi-channel visible light communications using CMOS-controlled GaN-based LEDs

Shuailong Zhang, Scott Watson, Jonathan McKendry, David Massoubre, Andrew Cogman, Erdan Gu, R.K. Henderson, A.E. Kelly, Martin Dawson

Research output: Contribution to journalArticle

92 Citations (Scopus)

Abstract

An on-chip multi-channel visible light communication (VLC) system is realized through a blue (450 nm) GaN-based micron-size light-emitting diode (μLED) array integrated with complementary metal-oxide-semiconductor (CMOS) electronics. When driven by a custom-made CMOS driving board with 16 independent parallel data input ports, this μLED array device is computer controllable via a standard USB interface and is capable of delivering high speed parallel data streams for VLC. A total maximum error-free data transmission rate of 1.5 Gbit/s is achieved over free space by modulating four μLED pixels simultaneously using an on-off key non-return to zero modulation scheme. Electrical and optical crosstalk of the system has also been investigated in detail and the further optimization of CMOS design to minimize the crosstalk is proposed.
Original languageEnglish
Pages (from-to)1211-1216
Number of pages6
JournalJournal of Lightwave Technology
Volume31
Issue number8
Early online date8 Feb 2013
DOIs
Publication statusPublished - 15 Apr 2013

Keywords

  • III-V semiconductors
  • gallium compounds
  • light emitting diodes
  • optical communication
  • CMOS electronics

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