Analysis of beam wander effect in high turbulence for FSO communication link. Issue 20 (23rd October 2018)

• Record Type: Journal Article
• Authors: Mukherjee, Arka; Kar, Subrat; Kumar Jain, Virander
• Is Part Of: IET communications. Volume 12:Issue 20(2018)
• Page Start: 2533
• Page End: 2537
• Publication Date: 2018-10-23
• Subjects: atmospheric turbulence -- optical links -- gamma distribution -- refractive index -- atmospheric light propagation; refractive index fluctuations -- high turbulence regime -- FSO communication link -- atmospheric turbulence -- turbulent eddy -- dielectric lens -- refractive index profile -- eddy positions -- Gamma distributed eddy sizes -- beam wander effect -- propagation path -- aperture size; Telecommunication systems -- Periodicals; Speech processing systems -- Periodicals; 621.38205
• DOI: 10.1049/iet-com.2018.5409
• Languages: English
• ISSNs: 1751-8628

Abstract

Abstract : Atmospheric turbulence causes severe impairment of FSO communication link. Existing model underestimates the beam wander effect in high turbulence regime. In this paper, we model each turbulent eddy as a thin dielectric lens with Gaussian shaped refractive index profile and assume there are several sheets of eddies throughout the propagation path. We consider uniformly distributed eddy positions in a laminar sheet with Gamma distributed eddy sizes and refractive index fluctuations. We calculate mean beam wander and link availability for a given aperture size in high turbulence regime. Our simulation results show good concordance with the analytical results.