Aperture averaging in a free-space laser communication system with a phase diffuser

Jennifer C. Ricklin; Frederic M. Davidson

doi:10.1117/12.453532

9 December 2002 Aperture averaging in a free-space laser communication system with a phase diffuser

Jennifer C. Ricklin, Frederic M. Davidson

Proceedings Volume 4821, Free-Space Laser Communication and Laser Imaging II; (2002) https://doi.org/10.1117/12.453532
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

Abstract

The effects of aperture averagign in a free-space laser communication system with a phase diffuser placed in front of the transmitting aperture are studied. The partially coherent beam created by the use of a phase diffuser is modeled as a Gaussian Schell beam. To evaluate aperture averaging, an analytic expression is used for the spatial covariance of irradiance fluctuations that is valid for Gaussian beams of any degree of coherence, subject to the restriction that the atmospheic turbulence-corrupted laser beam can be described as a Gaussian stochastic process. In the weak fluctuation regime this analytic expression is found to compare reasonably well with published data. It is shown that when a partially coherent source beam is used irradiance fluctuations can be significantly reduced in the weak fluctuation regime.

Citation Download Citation

Jennifer C. Ricklin and Frederic M. Davidson "Aperture averaging in a free-space laser communication system with a phase diffuser", Proc. SPIE 4821, Free-Space Laser Communication and Laser Imaging II, (9 December 2002); https://doi.org/10.1117/12.453532

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