Compensating for optical beam scattering and wandering in FSO communications

Mircea Hulea; Zabih Ghassemlooy; Sujan Rajbhandari; Xuan Tang

doi:10.1109/JLT.2014.2304182

Compensating for optical beam scattering and wandering in FSO communications

Mircea Hulea
, Zabih Ghassemlooy
, Sujan Rajbhandari
, Xuan Tang

Gh. Asachi Technical University
Northumbria University
University of Oxford
Tsinghua University

Research output: Contribution to journal › Article › peer-review

69 Scopus citations

Abstract

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.

Original language	English
Article number	6730657
Pages (from-to)	1323-1328
Number of pages	6
Journal	Journal of Lightwave Technology
Volume	32
Issue number	7
DOIs	https://doi.org/10.1109/JLT.2014.2304182
State	Published - 1 Apr 2014
Externally published	Yes

Keywords

Air turbulence
concave spherical mirrors
free space optical (FSO) link
laser beams scattering and wandering

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10.1109/JLT.2014.2304182

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title = "Compensating for optical beam scattering and wandering in FSO communications",

abstract = "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.",

keywords = "Air turbulence, concave spherical mirrors, free space optical (FSO) link, laser beams scattering and wandering",

author = "Mircea Hulea and Zabih Ghassemlooy and Sujan Rajbhandari and Xuan Tang",

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doi = "10.1109/JLT.2014.2304182",

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T1 - Compensating for optical beam scattering and wandering in FSO communications

AU - Hulea, Mircea

AU - Ghassemlooy, Zabih

AU - Rajbhandari, Sujan

AU - Tang, Xuan

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 - Air turbulence

KW - concave spherical mirrors

KW - free space optical (FSO) link

KW - laser beams scattering and wandering

UR - https://www.scopus.com/pages/publications/84897743376

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DO - 10.1109/JLT.2014.2304182

M3 - 文章

AN - SCOPUS:84897743376

SN - 0733-8724

VL - 32

SP - 1323

EP - 1328

JO - Journal of Lightwave Technology

JF - Journal of Lightwave Technology

IS - 7

M1 - 6730657

ER -

Compensating for optical beam scattering and wandering in FSO communications

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Keywords

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