Near-IR and Mid-IR wave propagation through patchy fog

E. Verdugo; L. Luini; C. Riva; G. Galzerano; L. Resteghini; L. da Silva Mello; R. Nebuloni

doi:10.1117/12.2692324

12 March 2024 Near-IR and Mid-IR wave propagation through patchy fog

E. Verdugo, L. Luini, C. Riva, G. Galzerano, L. Resteghini, L. da Silva Mello, R. Nebuloni

Proceedings Volume 12877, Free-Space Laser Communications XXXVI; 128771J (2024) https://doi.org/10.1117/12.2692324
Event: SPIE LASE, 2024, San Francisco, California, United States

Conference Poster

Abstract

A Free-Space Optics (FSO) propagation experiment is running in Milan, Italy, since September 2022, in the framework of the Joint Lab between Huawei and Politecnico di Milano in collaboration with Consiglio Nazionale delle Ricerche (CNR). The set-up includes two co-located FSO links: a prototype mid-IR link (10.6 μm) and a commercial near-IR link (1.550 μm) over an 800-m path. Meteorological data are collected by two visibility sensors, two disdrometers, and a weather station. Data from a case study of moderate fog that occurred in winter 2022 highlights that the spatial distribution of fog is highly non-homogeneous along the path, hence, simple prediction models based on single-point measurements of the visibility may incur in large errors. Moreover, the comparison of path attenuation time series shows that the mid-IR link performs better than near-IR.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

E. Verdugo, L. Luini, C. Riva, G. Galzerano, L. Resteghini, L. da Silva Mello, and R. Nebuloni "Near-IR and Mid-IR wave propagation through patchy fog", Proc. SPIE 12877, Free-Space Laser Communications XXXVI, 128771J (12 March 2024); https://doi.org/10.1117/12.2692324

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