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Optics Letters

Optics Letters


  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 13 — Jul. 1, 2014
  • pp: 4045–4048

Automated alignment system for optical wireless communication systems using image recognition

Paul Brandl, Alexander Weiss, and Horst Zimmermann  »View Author Affiliations

Optics Letters, Vol. 39, Issue 13, pp. 4045-4048 (2014)

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In this Letter, we describe the realization of a tracked line-of-sight optical wireless communication system for indoor data distribution. We built a laser-based transmitter with adaptive focus and ray steering by a microelectromechanical systems mirror. To execute the alignment procedure, we used a CMOS image sensor at the transmitter side and developed an algorithm for image recognition to localize the receiver’s position. The receiver is based on a self-developed optoelectronic integrated chip with low requirements on the receiver optics to make the system economically attractive. With this system, we were able to set up the communication link automatically without any back channel and to perform error-free (bit error rate <109) data transmission over a distance of 3.5 m with a data rate of 3 Gbit/s.

© 2014 Optical Society of America

OCIS Codes
(250.3140) Optoelectronics : Integrated optoelectronic circuits
(060.2605) Fiber optics and optical communications : Free-space optical communication
(100.3008) Image processing : Image recognition, algorithms and filters
(130.3990) Integrated optics : Micro-optical devices

ToC Category:
Optical Devices

Original Manuscript: March 20, 2014
Revised Manuscript: June 5, 2014
Manuscript Accepted: June 6, 2014
Published: June 30, 2014

Paul Brandl, Alexander Weiss, and Horst Zimmermann, "Automated alignment system for optical wireless communication systems using image recognition," Opt. Lett. 39, 4045-4048 (2014)

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