Scintillation and bit error rate analysis of a partially coherent flat-topped array laser beam in maritime and terrestrial non-Kolmogorov atmospheric environments on a slant path

• DOI: 10.1364/josaa.35.001427
• Publication Date: 2018-07-24T16:38:49Z
• Authors: Shole Golmohammady; Masoud Yousefi; Ahmad Mashal; Bijan Ghafary
• Keywords: Free-Space Optical Communication; Bit (key)

In this paper, on the basis of extended Huygens-Fresnel principle, a semi-analytical expression for describing on-axis scintillation index partially coherent flat-topped laser beam through non-Kolmogorov maritime and terrestrial atmospheric environments slant path is derived. Consequently, by using log-normal intensity probability density function, bit error rate (BER) evaluated. The effects source factors (such as wavelength, order flatness, width) turbulent atmosphere parameters Kolmogorov inner scale, spectral power-law exponent, turbulence structure constant) propagation behavior index, hence BER, are studied in detail. Results indicate that an increase average SNR causes greater influence exponent BER. Also, it can be deduced mean BER increases while decreases. addition, communication link represent fact increasing refractive-index parameter ground decreasing scale eddies these parameters.