Abstract
Feature Issue on Optical
Wireless Communications (OWC)
We have developed a flexible, empirical approach for optimizing the design of
free-space optical communication links by using multiframe image analysis of
received intensity scintillation patterns. This is a versatile way to perform
aperture-averaging analysis. A high-performance digital camera with a frame-grabbing
computer interface is used to capture received intensity distributions of a He-Ne
laser beam propagating in weak and intermediate turbulence conditions. The
aperture-averaging results demonstrate the expected reduction in intensity
fluctuations due to increasing the receiver aperture diameter for various strengths
of turbulence. Aperture averaging improves the bit error rate.
© 2005 Optical Society of America
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