Open AccessScintillation and aperture averaging for Gaussian beams through non-Kolmogorov maritime atmospheric turbulence channels
Author(s) -
Mingjian Cheng,
Lixin Guo,
Yixin Zhang
Publication year - 2015
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.032606
Subject(s) - scintillation , optics , physics , free space optical communication , turbulence , aperture (computer memory) , wavelength , atmospheric optics , gaussian , gaussian beam , optical communication , beam (structure) , meteorology , acoustics , quantum mechanics , detector
Analytic expression of the receiver-aperture-averaged scintillation index (SI) was derived for Gaussian-beam waves propagating through non-Kolmogorov maritime atmospheric environment by establishing a generalized maritime atmospheric spectrum model. The error performance of an intensity-modulated and direct-detection (IM/DD) free-space optical (FSO) system was investigated using the derived SI and log-normal distribution. The combined effects of non-Kolmogorov power-law exponent, turbulence inner scale, structure parameter, propagation distance, receiver aperture, and wavelength were also evaluated. Results show that inner scale and power-law exponent obviously affect SI. Large wavelength and receiver aperture can mitigate the effects of turbulence. The proposed model can be evaluated ship-to-ship/shore FSO system performance.