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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 9 — May. 5, 2014
  • pp: 11107–11118

Design of dual-link (wide- and narrow-beam) LED communication systems

Thomas C. Shen, Robert J. Drost, Christopher C. Davis, and Brian M. Sadler  »View Author Affiliations

Optics Express, Vol. 22, Issue 9, pp. 11107-11118 (2014)

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We explore the design of an LED-based communication system comprising two free space optical links: one narrow-beam (primary) link for bulk data transmission and one wide-beam (beacon) link for alignment and support of the narrow-beam link. Such a system combines the high throughput of a highly directional link with the robust insensitivity to pointing errors of a wider-beam link. We develop a modeling framework for this dual-link configuration and then use this framework to explore system tradeoffs in power, range, and achievable rates. The proposed design presents a low-cost, compact, robust means of communication at short- to medium-ranges, and calculations show that data rates on the order of Mb/s are achievable at hundreds of meters with only a few LEDs.

© 2014 Optical Society of America

OCIS Codes
(060.4510) Fiber optics and optical communications : Optical communications
(230.3670) Optical devices : Light-emitting diodes
(060.2605) Fiber optics and optical communications : Free-space optical communication

ToC Category:
Optical Communications

Original Manuscript: February 20, 2014
Revised Manuscript: April 5, 2014
Manuscript Accepted: April 8, 2014
Published: May 1, 2014

Thomas C. Shen, Robert J. Drost, Christopher C. Davis, and Brian M. Sadler, "Design of dual-link (wide- and narrow-beam) LED communication systems," Opt. Express 22, 11107-11118 (2014)

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