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

Muhsin C. Gökçe; Yahya Baykal; Canan Kamacioğlu; Murat Uysal

doi:10.1117/1.OE.54.6.066103

25 June 2015 Aperture averaging in multiple-input single-output free-space optical systems

Muhsin C. Gökçe, Yahya Baykal, Canan Kamacioğlu, Murat Uysal

Author Affiliations +

Optical Engineering, Vol. 54, Issue 6, 066103 (June 2015). https://doi.org/10.1117/1.OE.54.6.066103

Abstract

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.

Citation Download Citation

Muhsin C. Gökçe, Yahya Baykal, Canan Kamacioğlu, and Murat Uysal "Aperture averaging in multiple-input single-output free-space optical systems," Optical Engineering 54(6), 066103 (25 June 2015). https://doi.org/10.1117/1.OE.54.6.066103

Published: 25 June 2015

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available