Wide field-of-view fluorescent antenna for visible light communications beyond the étendue limit

Pavlos Manousiadis, Sujan Rajbhandari, Rahmat Mulyawan, Chiranthika Dimali Amarasinghe Vithanage, Hyunchae Chun, Grahame Faulkner, Dominic C O'Brien, Graham Alexander Turnbull, Stephen Collins, Ifor David William Samuel

Research output: Contribution to journalArticlepeer-review

39 Citations (Scopus)
6 Downloads (Pure)

Abstract

Visible light communications (VLC) is an important emerging field aiming to use optical communications to supplement Wi-Fi. This will greatly increase the available bandwidth so that demands for ever-higher data rates can be met. In this vision, solid-state lighting will provide illumination while being modulated to transmit data. An important obstacle to realizing this vision are receivers, which need to be inexpensive, sensitive, fast, and have a large field of view (FoV). One approach to increasing the sensitivity of a VLC receiver is to increase the area of the receiver’s photodetector, but this makes them expensive and slow. An alternative approach is to use optical elements to concentrate light, but conservation of étendue in these elements limits their FoV. In this paper, we demonstrate novel antennas that overcome these limitations, giving fast receivers with large collection areas and large FoV. Our results exceed the limit of étendue, giving an enhancement of light collection by a factor of 12, with FoV semi-angle of 60°, and we show a threefold increase in data rate.
Original languageEnglish
Pages (from-to)702-706
Number of pages5
JournalOptica
Volume3
Issue number7
Early online date28 Jun 2016
DOIs
Publication statusPublished - 20 Jul 2016

Keywords

  • Visible light communications
  • Organic materials
  • Optical devices
  • Non-imaging optics

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