Fiber-coupling efficiency for free-space optical communication through atmospheric turbulence

Fiber-coupling efficiency for free-space optical communication through atmospheric turbulence

High-speed free-space optical communication systems have recently used fiber-optic components. The received laser beam in such a system must be coupled into a single-mode fiber at the input of the receiver module. However, propagation through atmospheric turbulence degrades the spatial coherence of...

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Veröffentlicht in:Applied Optics 2005-08, Vol.44 (23), p.4946-4952
Hauptverfasser: Dikmelik, Yamaç, Davidson, Frederic M
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Davidson, Frederic M
description High-speed free-space optical communication systems have recently used fiber-optic components. The received laser beam in such a system must be coupled into a single-mode fiber at the input of the receiver module. However, propagation through atmospheric turbulence degrades the spatial coherence of a laser beam and limits the fiber-coupling efficiency. We numerically evaluate the fiber-coupling efficiency for laser light distorted by atmospheric turbulence. We also investigate the use of a coherent fiber array as a receiver structure and find that a coherent fiber array that consists of seven subapertures would significantly increase the fiber-coupling efficiency.
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title Fiber-coupling efficiency for free-space optical communication through atmospheric turbulence
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