Beamsteering systems offer the potential to extend the fibre-based telecommunications infrastructure with wireless point-to-point data links that are transparent to modulation scheme and data rate. In this paper we introduce beamsteering, and discuss the challenges in implementing and using such systems that use this approach in indoor environments. Results from a number of demonstration systems are presented, including ultra-high data rate indoor optical wireless, operating at up to 400Gbit/s.

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Dominic C. O'Brien, "Beamsteering for ultra-high data-rate optical wireless communications," Proc. SPIE 10945, Broadband Access Communication Technologies XIII, 109450J (Presented at SPIE OPTO: February 05, 2019; Published: 1 February 2019); https://doi.org/10.1117/12.2506266.