@inproceedings{7a0b8ec0ebdc41ed891c66bb7546ee8f,
title = "Free space communication under scattering and scintillation effects",
abstract = "A combination of scattering and scintillation effects is considered to compare the resilience of mid-IR and near-IR free space communication links. Beam-wander rw(t) under different scintillation conditions for mid-IR and near- IR beams are recorded simultaneously in real-time by a unique broad-band camera. The correlation coefficients show that both beams undergo the same pathway and experience the same scattering and scintillation effect which allows to identify and distill wavelength dependent effects. Using the frequency dependence in the observed beam wander allows for classification of our simulated atmospheric turbulence. Under these lab conditions, perceived refractive index structure parameter C-n^2 is extracted for each wavelength and a long-term radius is estimated for a long-distance link. In addition, the transmissivity and broadening of beams are calculated using discrete ordinate method to account for the scattering by fog. Considering both scattering and scintillation effects, the experimental and analytical results show that mid-IR (4.328 and mu;m) beam has higher resilience in low visibility conditions compared to a near-IR (1.550 and mu;m) beam.",
keywords = "C2n, Rytov variance, mid-infrared, scintillation, turbulence",
author = "Ting Bu and Dayu Zhang and Prajnesh Kumar and Nan Chen and Rainer Martini",
note = "Publisher Copyright: {\textcopyright} 2019 SPIE. Downloading of the abstract is permitted for personal use only.; Free-Space Laser Communications XXXI 2019 ; Conference date: 04-02-2019 Through 06-02-2019",
year = "2019",
doi = "10.1117/12.2513941",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Boroson, {Don M.} and Hamid Hemmati",
booktitle = "Free-Space Laser Communications XXXI",
}