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Investigation and performance analysis of LG-SDM-FSO transmission system using 2 μm laser beam under atmospheric turbulences

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Abstract

The deployment of free-space optical (FSO) communication links is simple, fast and economical than optical fiber networks. However, it presents weakness in front of low visibility and its performance is deteriorated by atmospheric turbulence due to different weather conditions. In this paper, we have investigated an effective FSO system by integrating space division multiplexing (SDM) that can be used to enhance the information-carrying capabilities of FSO links. In addition, we have used a laser beam operating at 2 μm wavelength as an optical link in the proposed SDM-FSO system, which relates the telecom performance and the FSO link state, in terms of turbulence. In this system, information channels are transmitted concurrently over distinct Laguerre–Gaussian modes (LG) of the laser beam, where each mode is used to carrying independent 10 Gbps data stream. The availability of the LG-SDM-FSO system in dependence on weather conditions and on FSO link parameters, such as transmitted optical power, geometric loss, beam divergence, receiver aperture diameter, and link range, is discussed. The performance of our system is evaluated based on eye diagram, Q Factor and BER measurements.

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Acknowledgements

This work was supported by the Directorate-General for Scientific Research and Technological Development (DG-RSDT) of Algeria.

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Authors and Affiliations

  1. Electronic and Telecommunications Department, 8 Mai 1945-Guelma University, 24000, Guelma, Algeria

    Ines Hamamdia & Rania Guernine

  2. Telecommunications Laboratory, 8 Mai 1945-Guelma University, 24000, Guelma, Algeria

    Leila Graini

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  1. Ines Hamamdia
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  2. Leila Graini
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  3. Rania Guernine
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Contributions

L. G supervised the project and conceived of the presented idea. I. H performed the analytic calculations and the numerical simulations. Both I. H and R. G contributed to the final version of the manuscript. All authors have read and agreed to the published version of the manuscript.

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Correspondence to Leila Graini.

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Hamamdia, I., Graini, L. & Guernine, R. Investigation and performance analysis of LG-SDM-FSO transmission system using 2 μm laser beam under atmospheric turbulences. J Opt 53, 643–653 (2024). https://doi.org/10.1007/s12596-023-01227-5

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  • DOI: https://doi.org/10.1007/s12596-023-01227-5

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