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Optical intensity scintillation in the simulated atmospherical environment
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Paper Abstract

There are several parameters of the atmospheric environment which have an effect on the optical wireless connection. Effects like fog, snow or rain are ones of the effects which appears tendentiously and which are bound by season, geographic location, etc. One of the effects that appear with various intensity for the whole time is airflow. The airflow changes the local refractive index of the air and areas with lower or higher refractive index form. The light going through these areas refracts and due to the optical intensity scintillates on the detector of the receiver. The airflow forms on the basis of two effects in the atmosphere. The first is wind cut and flowing over barriers. The other is thermal flow when warm air rises to the higher layers of the atmosphere. The heart of this article is creation such an environment that will form airflow and the refractive index will scintillate. For the experiment, we used special laboratory box with high-speed ventilators and heating units to simulate atmospheric turbulence. We monitor the impact of ventilator arrangement and air temperature on the scintillation of the gas laser with wavelength 633 nm/15 mW. In the experiment, there is watched the difference in behavior between real measurement and flow simulation with the same peripheral conditions of the airflow in the area of 500 x 500 cm.

Paper Details

Date Published: 19 September 2016
PDF: 11 pages
Proc. SPIE 9979, Laser Communication and Propagation through the Atmosphere and Oceans V, 997915 (19 September 2016); doi: 10.1117/12.2237969
Show Author Affiliations
Lukas Hajek, VŠB-Technical Univ. of Ostrava (Czech Republic)
Jan Latal, VŠB-Technical Univ. of Ostrava (Czech Republic)
Ales Vanderka, VŠB-Technical Univ. of Ostrava (Czech Republic)
Jan Vitasek, VŠB-Technical Univ. of Ostrava (Czech Republic)
Marian Bojko, VŠB-Technical Univ. of Ostrava (Czech Republic)
Lukas Bednarek, VŠB-Technical Univ. of Ostrava (Czech Republic)
Vladimir Vasinek, VŠB-Technical Univ. of Ostrava (Czech Republic)


Published in SPIE Proceedings Vol. 9979:
Laser Communication and Propagation through the Atmosphere and Oceans V
Alexander M. J. van Eijk; Christopher C. Davis; Stephen M. Hammel, Editor(s)

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