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

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

Zizheng Cao (Corresponding author)
, Xuebing Zhang
, Gerwin Osnabrugge
, Juhao Li
, Ivo M. Vellekoop (Corresponding author)
, Antonius M.J. Koonen (Corresponding author)

Onderzoeksoutput: Bijdrage aan tijdschrift › Tijdschriftartikel › Academic › peer review

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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.

Originele taal-2	Engels
Artikelnummer	69
Aantal pagina's	9
Tijdschrift	Light: Science and Applications
Volume	8
Nummer van het tijdschrift	1
DOI's	https://doi.org/10.1038/s41377-019-0177-3
Status	Gepubliceerd - 24 jul. 2019

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This work is supported by the European Research Council in Advanced Grant project BROWSE and Proof-of-Concept project BROWSE+; NWO Zwaartekracht program on Integrated Nanophotonics; National Natural Science Foundation of China (NSFC) (61575186, 61635001); Open Fund from State Key Laboratory of Advanced Optical Communication Systems Networks, China; NWO China Exchange Programme (530-5CDP06) and ERC Starting Grant N. 678919. The authors want to thank the anonymous reviewers for their in-depth comments, suggestions and direct help to improve the presentation of the manuscript. Z. Cao would like to thank Dr. Chia Wei Hsu from Yale University for the fruitful discussion. X. Zhang thanks Dr. Chao Li from Eindhoven University of Technology for discussion.

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

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