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Publication Citation: Long distance optical frequency transfer over fiber: predicting the frequency stability from the fiber noise

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Author(s): Nathan R. Newbury; Paul A. Williams; William C. Swann;
Title: Long distance optical frequency transfer over fiber: predicting the frequency stability from the fiber noise
Published: May 19, 2008
Abstract: We have recently demonstrated the coherent transfer of an optical signal over a 251 km link of optical fiber using the standard Doppler-cancellation approach to remove the effects of the fiber-link noise. The fundamental limit to the frequency instability on the transmitted optical frequency is set by residual phase noise on the optical frequency resulting from the unavoidable imperfect Doppler cancellation of the fiber-link noise. Here we demonstrate that it is possible to quantitatively predict the phase noise and instability of the Doppler-cancelled transmitted optical frequency directly from the measured fiber-link noise. The ability to predict the frequency instability from the measured fiber noise can be a useful tool in evaluating whether a coherent fiber optic link is operating at its fundamental limit, or whether there is additional excess noise from the measurement system present in the link.
Proceedings: 2008 IEEE International Frequency Control Symposium
Volume: 978-1-4244-1795-7/08
Pages: pp. 725 - 728
Location: Honolulu, HI
Dates: May 19-21, 2008
Keywords: frequency combs;Frequency transfer
Research Areas: Optical Physics
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