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Aperture averaging in multiple-input single-output free-space optical systems

Title	Aperture averaging in multiple-input single-output free-space optical systems
Author	Gökçe, M. C., Baykal, Y., Kamacıoğlu, C., Uysal, Murat
Publication Date:	2015-06
Publication Place	- SPIE
Subject	Multiple-input single-output systems, Free-space optical communication, Optical wave propagation, Power scintillation, Aperture averaging
Type	Periodical
Language	English
Digital	Yes
Manuscript	No
Library:	Özyeğin University
Library Asset ID	1560-2303
Record ID	98dc9fc0-a7a3-4001-a467-d83aad6e9d53
Library Location	Electrical & Electronics Engineering
Date	2015-06
Notes	Due to copyright restrictions, the access to the full text of this article is only available via subscription.
Sample Text	Multiple-input single-output systems are employed in free-space optical links to mitigate the degrading effects of atmospheric turbulence. We formulate the power scintillation as a function of transmitter and receiver coordinates in the presence of weak atmospheric turbulence by using the extended Huygens–Fresnel principle. Then the effect of the receiver–aperture averaging is quantified. To get consistent results, parameters are chosen within the range of validity of the wave structure functions. Radial array beams and a Gaussian weighting aperture function are used at the transmitter and the receiver, respectively. It is observed that the power scintillation decreases when the source size, the ring radius, the receiver–aperture radius, and the number of array beamlet increase. However, increasing the number of array beamlets to more than three seems to have negligible effect on the power scintillation. It is further observed that the aperture averaging effect is stronger when radial array beams are employed instead of a single Gaussian beam.
DOI	10.1117/1.OE.54.6.066103
Cilt	54

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Özyeğin University

Aperture averaging in multiple-input single-output free-space optical systems

Author Gökçe, M. C., Baykal, Y., Kamacıoğlu, C., Uysal, Murat

Publication Date 2015-06

Publication Place - SPIE

Subject Multiple-input single-output systems, Free-space optical communication, Optical wave propagation, Power scintillation, Aperture averaging

Type Periodical

Language English

Digital Yes

Manuscript No

Library Özyeğin University

Library Asset ID 1560-2303

Record ID 98dc9fc0-a7a3-4001-a467-d83aad6e9d53

Library Location Electrical & Electronics Engineering

Date 2015-06

Notes Due to copyright restrictions, the access to the full text of this article is only available via subscription.

Sample Text Multiple-input single-output systems are employed in free-space optical links to mitigate the degrading effects of atmospheric turbulence. We formulate the power scintillation as a function of transmitter and receiver coordinates in the presence of weak atmospheric turbulence by using the extended Huygens–Fresnel principle. Then the effect of the receiver–aperture averaging is quantified. To get consistent results, parameters are chosen within the range of validity of the wave structure functions. Radial array beams and a Gaussian weighting aperture function are used at the transmitter and the receiver, respectively. It is observed that the power scintillation decreases when the source size, the ring radius, the receiver–aperture radius, and the number of array beamlet increase. However, increasing the number of array beamlets to more than three seems to have negligible effect on the power scintillation. It is further observed that the aperture averaging effect is stronger when radial array beams are employed instead of a single Gaussian beam.

DOI 10.1117/1.OE.54.6.066103

Cilt 54