Correcting turbulence with a multi-actuator lens for optical communication links

Matteo Schiavon; Antonio Vanzo; Kevin Campaci; Valentina Marulanda Acosta; Stefano Bonora

doi:10.1117/12.3002851

13 March 2024 Correcting turbulence with a multi-actuator lens for optical communication links

Matteo Schiavon, Antonio Vanzo, Kevin Campaci, Valentina Marulanda Acosta, Stefano Bonora

Proceedings Volume 12877, Free-Space Laser Communications XXXVI; 128771U (2024) https://doi.org/10.1117/12.3002851
Event: SPIE LASE, 2024, San Francisco, California, United States

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Abstract

Free-space optical communication systems always require a precise focusing at the receiver. Unfortunately, when the transmitted beam passes through the atmosphere the wavefront is distorted by the time variant inhomogeneity of the refractive index, causing strong fluctuations in the power coupled into single-mode fiber at the receiver. We present an optical transmission system with a Multi-Actuator Lens (MAL) capable to increase the fiber coupling efficiency from about 5% in absence of correction to the 20%. The measurements have been performed indoor with artificially generated aberrations and outdoor in a 100m horizontal link at 1550nm.

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Matteo Schiavon, Antonio Vanzo, Kevin Campaci, Valentina Marulanda Acosta, and Stefano Bonora "Correcting turbulence with a multi-actuator lens for optical communication links", Proc. SPIE 12877, Free-Space Laser Communications XXXVI, 128771U (13 March 2024); https://doi.org/10.1117/12.3002851

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