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

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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.

Original languageEnglish
Article number69
Number of pages9
JournalLight: Science and Applications
Volume8
Issue number1
DOIs
Publication statusPublished - 24 Jul 2019

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free-space optical communication
visual perception
Optical communication
Wavefronts
receivers
Optical receivers
frequency division multiplexing
transmitters
Orthogonal frequency division multiplexing
Telecommunication links
communication
Communication
Experiments
energy

Cite this

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title = "Reconfigurable beam system for non-line-of-sight free-space optical communication",
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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Reconfigurable beam system for non-line-of-sight free-space optical communication. / Cao, Zizheng; Zhang, Xuebing; Osnabrugge, Gerwin; Li, Juhao; Vellekoop, Ivo M.; Koonen, Antonius M.J.

In: Light: Science and Applications, Vol. 8, No. 1, 69, 24.07.2019.

Research output: Contribution to journalArticleAcademicpeer-review

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