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

被引：0
|
作者：
Zizheng Cao
Xuebing Zhang
Gerwin Osnabrugge
Juhao Li
Ivo M. Vellekoop
Antonius M. J. Koonen
机构：
[1] Eindhoven University of Technology,Institute for Photonic Integration
[2] University of Twente,Faculty of Science and Technology
[3] Peking University,State Key Laboratory of Advanced Optical Communication Systems and Networks
来源：
Light: Science & Applications | / 8卷
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摘要：
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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