TY - JOUR

T1 - Compensating for Optical Beam Scattering and Wandering in FSO Communications

AU - Hulea, M.

AU - Ghassemlooy, Z.

AU - Rajbhandari, Sujan

AU - Tang, X.

N1 - “© 2014 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.”

PY - 2014/4/1

Y1 - 2014/4/1

N2 - In this paper we introduce a simple and effective method for substantially reducing the beam spot wandering and scattering effects in the free space optical (FSO) communications using a spherical concave mirror (SCM). The advantages of employing SCMs for focusing the light onto a small area photodetector are improved efficiency in collecting income scattered light beam in a turbulence channel and the detachment between the position of the SCM focal point and fluctuations of the refractive index of the channel. The proposed method is experimentally evaluated in an indoor controlled turbulence environment over a propagation span of up to 104 m. The results testify that SCM can effectively compensate the optical spot scattering and wandering effect, thus leading to improved performance of the FSO system.

AB - In this paper we introduce a simple and effective method for substantially reducing the beam spot wandering and scattering effects in the free space optical (FSO) communications using a spherical concave mirror (SCM). The advantages of employing SCMs for focusing the light onto a small area photodetector are improved efficiency in collecting income scattered light beam in a turbulence channel and the detachment between the position of the SCM focal point and fluctuations of the refractive index of the channel. The proposed method is experimentally evaluated in an indoor controlled turbulence environment over a propagation span of up to 104 m. The results testify that SCM can effectively compensate the optical spot scattering and wandering effect, thus leading to improved performance of the FSO system.

KW - atmospheric light propagation

KW - atmospheric turbulence

KW - laser beams

KW - light scattering

KW - mirrors

KW - optical focusing

KW - optical links

KW - photodetectors

KW - refractive index

KW - telecommunication channels

KW - FSO communications

KW - SCM focal point

KW - beam spot wandering

KW - free space optical communications

KW - indoor controlled turbulence environment

KW - light focusing

KW - light propagation

KW - optical beam scattering

KW - photodetector

KW - scattered light beam

KW - spherical concave mirror

KW - turbulence channel

KW - Air turbulence

KW - concave spherical mirrors

KW - free space optical (FSO) link

KW - laser beams scattering and wandering

KW - Laser beams

KW - Mirrors

KW - Optical beams

KW - Optical fiber communication

KW - Optical receivers

KW - Optical transmitters

U2 - 10.1109/JLT.2014.2304182

DO - 10.1109/JLT.2014.2304182

M3 - Article

VL - 32

SP - 1323

EP - 1328

JO - Journal of Lightwave Technology

JF - Journal of Lightwave Technology

SN - 0733-8724

IS - 7

ER -