Analysing the Atmospheric Effects on Optical Communication Link Parameters Through a Slant Path in the Non-Kolmogorov Turbulence

Abstract

In this investigation, the effects of scattering, absorption and non-Kolmogorov atmospheric turbulence on the wireless optical communication link's parameters is studied. Link's parameters including scintillation index, Power In Bucket (PIB), Signal to Noise Ratio (SNR) and Bit Error Rate (BER) through a slant path, which has been studied in detail. According to the extended Huygens-Fresnel principle, the cross-spectral density (and hence the average intensity)and scintillation index of a Flat-topped array laser beam propagating through the slant path in the turbulent atmosphere with the help of the derived analytical expressions are investigated. By using the LOWTRAN code, the atmospheric transmittance is estimated. Consequently, the link reliability through investigation of PIB, SNR and BER is numerically analyzed. Then, the impacts of some crucial source and turbulent environment factors on the considered link parameters are scrutinized. The results of the study are presented using the graphs.