Reconfigurable beam system for non-line-of-sight free-space optical communication

Zizheng Cao; Xuebing Zhang; Gerwin Osnabrugge; Juhao Li; Ivo M. Vellekoop; Antonius M. J. Koonen

doi:10.1038/s41377-019-0177-3

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Reconfigurable beam system for non-line-of-sight free-space optical communication

Article

- Reconfigurable beam system for non-line-of-sight free-space optical communication
- Light: Science & Applications Vol. 8, Issue 4, Pages: 591-599(2019)
- Affiliations：
  
  1.Institute for Photonic Integration, Eindhoven University of Technology, PO Box 5135600 MB Eindhoven, the Netherlands
  2.Faculty of Science and Technology, University of Twente, P.O. Box 2177500 AE Enschede, the Netherlands
  3.State Key Laboratory of Advanced Optical Communication Systems and Networks, Peking University, Beijing 100871, China
- Author bio：
  
  Zizheng Cao (z.cao@tue.nl)
  Ivo M. Vellekoop (i.m.vellekoop@utwente.nl)
  Antonius M. J. Koonen (A.M.J.Koonen@tue.nl)
- Funds：
- DOI：10.1038/s41377-019-0177-3
  CLC：
- Published：2019，
  
  Published Online：24 July 2019，
  
  Received：22 November 2018，
  
  Revised：20 May 2019，
  
  Accepted：02 July 2019
- Accepted：
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Cao, Z. Z. et al. Reconfigurable beam system for non-line-of-sight free-space optical communication. Light: Science & Applications, 8, 591-599 (2019).
DOI：

Cao, Z. Z. et al. Reconfigurable beam system for non-line-of-sight free-space optical communication. Light: Science & Applications, 8, 591-599 (2019). DOI： 10.1038/s41377-019-0177-3.

摘要

Abstract

In this paper

we propose a reconfigurable beam-shaping system to permit energy-efficient non-line-of-sight (NLOS) free-space optical communication. Light is steered around obstacles blocking the direct communication pathway and reaches a receiver after reflecting off of a diffuse surface. A coherent array optical transmitter (CAO-Tx) is used to spatially shape the wavefront of the light incident on a diffuse surface. Wavefront shaping is used to enhance the amount of diffusely reflected light reaching the optical receiver. Synthetic NLOS experiments for a signal reflected over an angular range of 20° are presented. A record-breaking 30-Gbit/s orthogonal frequency-division multiplexing signal is transmitted over a diffused optical wireless link with a > 17-dB gain.

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