Coherent free space optics communications over the maritime atmosphere with use of adaptive optics for beam wavefront correction

We evaluate the performance of the coherent free space optics (FSO) employing quadrature array phase-shift keying (QPSK) modulation over the maritime atmosphere with atmospheric turbulence compensated by use of adaptive optics (AO). We have established a comprehensive FSO channel model for maritime...

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Published in:Applied optics (2004) 2015-02, Vol.54 (6), p.1453-1462
Main Authors: Li, Ming, Cvijetic, Milorad
Format: Article
Language:English
Subjects:
Adaptive optics
Channels
Coherence
Fluid flow
Free space optics
Links
Maritime
Turbulent flow
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description We evaluate the performance of the coherent free space optics (FSO) employing quadrature array phase-shift keying (QPSK) modulation over the maritime atmosphere with atmospheric turbulence compensated by use of adaptive optics (AO). We have established a comprehensive FSO channel model for maritime conditions and also made a comprehensive comparison of performance between the maritime and terrestrial atmospheric links. The FSO links are modeled based on the intensity attenuation resulting from scattering and absorption effects, the log-amplitude fluctuations, and the phase distortions induced by turbulence. The obtained results show that the FSO system performance measured by the bit-error-rate (BER) can be significantly improved when the optimization of the AO system is achieved. Also, we find that the higher BER is observed in the maritime FSO channel with atmospheric turbulence, as compared to the terrestrial FSO systems if they experience the same turbulence strength.
doi_str_mv 10.1364/AO.54.001453
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source Optica Publishing Group Journals
subjects Adaptive optics
Channels
Coherence
Fluid flow
Free space optics
Links
Maritime
Turbulent flow
title Coherent free space optics communications over the maritime atmosphere with use of adaptive optics for beam wavefront correction
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