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.
基金
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)
ERC Starting Grant N.678919.
