A space division multiplexed free-space-optical communication system that can auto-locate and fully self-align with a remote transceiver

Mojtaba Mansour Abadi; Mitchell A. Cox; Rakan E. Alsaigh; Shaun Viola; Andrew Forbes; Martin P. J. Lavery

doi:10.1038/s41598-019-55670-1

A space division multiplexed free-space-optical communication system that can auto-locate and fully self-align with a remote transceiver

Mojtaba Mansour Abadi, Mitchell A. Cox, Rakan E. Alsaigh, Shaun Viola, Andrew Forbes, Martin P. J. Lavery

Research output: Contribution to journal › Article › peer-review

36 Citations (Scopus)

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Abstract

Free-Space Optical (FSO) systems offer the ability to distribute high speed digital links into remote and rural communities where terrain, installation cost or infrastructure security pose critical hurdles to deployment. A challenge in any point-to-point FSO system is initiating and maintaining optical alignment from the sender to the receiver. In this paper we propose and demonstrate a low-complexity self-aligning FSO prototype that can completely self-align with no requirement for initial manual positioning and could therefore form the opto-mechanical basis for a mesh network of optical transceivers. The prototype utilises off-the-shelf consumer electrical components and a bespoke alignment algorithm. We demonstrate an eight fibre spatially multiplexed link with a loss of 15 dB over 210 m.

Original language	English
Article number	19687
Number of pages	8
Journal	Scientific Reports
Volume	9
Issue number	1
Early online date	23 Dec 2019
DOIs	https://doi.org/10.1038/s41598-019-55670-1
Publication status	Published - Dec 2019
Externally published	Yes

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s41598-019-55670-1Final published version, 1.64 MBLicence: CC BY

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AU - Viola, Shaun

AU - Forbes, Andrew

AU - Lavery, Martin P. J.

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AB - Free-Space Optical (FSO) systems offer the ability to distribute high speed digital links into remote and rural communities where terrain, installation cost or infrastructure security pose critical hurdles to deployment. A challenge in any point-to-point FSO system is initiating and maintaining optical alignment from the sender to the receiver. In this paper we propose and demonstrate a low-complexity self-aligning FSO prototype that can completely self-align with no requirement for initial manual positioning and could therefore form the opto-mechanical basis for a mesh network of optical transceivers. The prototype utilises off-the-shelf consumer electrical components and a bespoke alignment algorithm. We demonstrate an eight fibre spatially multiplexed link with a loss of 15 dB over 210 m.

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A space division multiplexed free-space-optical communication system that can auto-locate and fully self-align with a remote transceiver

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