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Proceedings Paper

Enhanced link availability for free space optical time-frequency transfer using adaptive optic terminals
Author(s): Keith G. Petrillo; Michael L. Dennis; Juan C. Juarez; Katherine T. Souza; Esther Baumann; Hugo Bergeron; Ian Coddington; Jean-Daniel Deschenes; Fabrizio R. Giorgetta; Nathan R. Newbury; Laura C. Sinclair; William C. Swann
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Paper Abstract

Optical time and frequency transfer offers extremely high precision wireless synchronization across multiple platforms for untethered distributed systems. While large apertures provide antenna gain for wireless systems which leads to robust link budgets and operation over increased distance, turbulence disrupts the beam and limits the full realization of the antenna gain. Adaptive optics can correct for phase distortions due to turbulence which potentially increases the total gain of the aperture to that for diffraction-limited operation. Here, we explore the use of adaptive optics terminals for free-space time and frequency transfer. We find that the requirement of reciprocity in a two-way time and frequency transfer link is maintained during the phase compensation of adaptive optics, and that the enhanced link budget due to aperture gain allows for potential system operation over ranges of at least tens of kilometers.

Paper Details

Date Published: 13 May 2016
PDF: 10 pages
Proc. SPIE 9833, Atmospheric Propagation XIII, 983308 (13 May 2016); doi: 10.1117/12.2229648
Show Author Affiliations
Keith G. Petrillo, Johns Hopkins Univ. Applied Physics Lab., LLC (United States)
Michael L. Dennis, Johns Hopkins Univ. Applied Physics Lab., LLC (United States)
Juan C. Juarez, Johns Hopkins Univ. Applied Physics Lab., LLC (United States)
Katherine T. Souza, Johns Hopkins Univ. Applied Physics Lab., LLC (United States)
Esther Baumann, National Institute of Standards and Technology (United States)
Hugo Bergeron, National Institute of Standards and Technology (United States)
Ian Coddington, National Institute of Standards and Technology (United States)
Jean-Daniel Deschenes, National Institute of Standards and Technology (United States)
Fabrizio R. Giorgetta, National Institute of Standards and Technology (United States)
Nathan R. Newbury, National Institute of Standards and Technology (United States)
Laura C. Sinclair, National Institute of Standards and Technology (United States)
William C. Swann, National Institute of Standards and Technology (United States)


Published in SPIE Proceedings Vol. 9833:
Atmospheric Propagation XIII
Linda M. Thomas; Earl J. Spillar, Editor(s)

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