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Turbulence-induced channel crosstalk in an orbital angular momentum-multiplexed free-space optical link

Anguita, Jaime A., Neifeld, Mark A., Vasic, Bane V.·2008·Applied Optics
DOI 10.1364/ao.47.002414
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Abstract

A multichannel free-space optical (FSO) communication system based on orbital angular momentum (OAM)-carrying beams is studied. We numerically analyze the effects of atmospheric turbulence on the system and find that turbulence induces attenuation and crosstalk among channels. Based on a model in which the constituent channels are binary symmetric and crosstalk is a Gaussian noise source, we find optimal sets of OAM states at each turbulence condition studied and determine the aggregate capacity of the multichannel system at those conditions. OAM-multiplexed FSO systems that operate in the weak turbulence regime are found to offer good performance. We verify that the aggregate capacity decreases as the turbulence increases. A per-channel bit-error rate evaluation is presented to show the uneven effects of crosstalk on the constituent channels.

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  • Nonuniform refractive index profiles caused by variations in temperature and pressure result in unwanted coupling within high-dimensional degrees of freedom in classical links and a loss of entanglement for quantum channels.

    “Nonuniform refractive index profiles caused by variations in temperature and pressure result in unwanted coupling within these high-dimensional DoFs in classical links (23–27) and a loss of entanglement for quantum channels (28–33)”

    From Topological robustness of optical skyrmions through a real-world free-space link (2026) · cites this paper as [23]

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Metadata

Authors
Anguita, J. A., Neifeld, M. A., & Vasic, B. V.
Venue
Applied Optics
Publisher
Optica Publishing Group
Published
2008-04-28
Volume
47
Issue
13
Pages
2414
ISSN
  • 0003-6935
  • 1539-4522
DOI
10.1364/ao.47.002414
Cited by
442
References
1
Language
en
Licence

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