Influence of atmospheric attenuation of laser beam on performance of free space optics system

Abstract AR

In this research the optical parameters that effect on the performance of the free space optics (FSO) system such as ^velength ,transmitted optical power, aperture averaging factor, and power margin for different paths links have been discussed, also the scintillation index caused by atmospheric turbulence and the atmospheric attenuation of laser beam due to the sc^tering by fog, mist, and haze have been discussed for these systems, the simulations are performed for a horizontal-path propagation of the Gaussian-beam wave and for two wavelengths 780 , and 1600 .