Demonstration of GBit/s coherent free-space optical communications over an 800 m outdoor path

Douglas McDonald; Raphael Bellossi; Szymon Gladysz; Andrew Lambert

doi:10.1117/12.2600085

12 September 2021 Demonstration of GBit/s coherent free-space optical communications over an 800 m outdoor path

Douglas McDonald, Raphael Bellossi, Szymon Gladysz, Andrew Lambert

Proceedings Volume 11860, Environmental Effects on Light Propagation and Adaptive Systems IV; 118600A (2021) https://doi.org/10.1117/12.2600085
Event: SPIE Remote Sensing, 2021, Online Only

Abstract

Coherent free-space optical (FSO) communications systems offer both an opportunity for significantly increased data rates and improved security compared to conventional radio frequency (RF) systems. A key challenge in implementing FSO systems is the characterization and mitigation of atmospheric turbulence present along the optical channel. In this work, we present experiments demonstrating coherent free-space optical communications over a two-pass 800 m link with data rates on the order of gigabits per second (Gbit/s). The link consists of a single telescope and retroreflector. At the start/end point of the monostatic link we have built an optical transceiver capable of coherent communications. We present here design considerations and results from transmission in moderate turbulence.

Conference Presentation

Citation Download Citation

Douglas McDonald, Raphael Bellossi, Szymon Gladysz, and Andrew Lambert "Demonstration of GBit/s coherent free-space optical communications over an 800 m outdoor path", Proc. SPIE 11860, Environmental Effects on Light Propagation and Adaptive Systems IV, 118600A (12 September 2021); https://doi.org/10.1117/12.2600085

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