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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.

SUBMITTER: Cao Z

PROVIDER: S-EPMC6804797 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature

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

Cao Zizheng Z Zhang Xuebing X Osnabrugge Gerwin G Li Juhao J Vellekoop Ivo M IM Koonen Antonius M J AMJ

Light, science & applications 20190724

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 r ...[more]

PMID: 31645917

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