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Conferences > CLEOPR > 2022 > CMP16A > CMP16A_05

Metasurface measuring twisted light in turbulence

Thomas Dinter, Lucca Kühner, Chenhao Li, Thomas Weber, Andreas Tittl, Stefan A. Maier, Judith M. Dawes, and Haoran Ren

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Abstract

Practical free-space communication systems suffer from turbulence-induced phase distortions to propagating beams, destroying the orthogonality of orbital angular momentum (OAM) modes used for space-division multiplexing and introducing modal crosstalk. Here we present the design and use of an ultrathin OAM mode-sorting metasurface for investigating the deterioration of OAM orthogonality under different turbulence conditions, offering a compact, fast and efficient way to measure the OAM spectrum.

© 2022 IEEE

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