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http://dx.doi.org/10.3807/KJOP.2006.17.6.514

Highly Stable RF Transfer over a Fiber Network by Fiber-induced Phase Noise Cancellation  

Lee, Won-Kyu (Length/Time Metrology Group, Division of Physical Metrology, Korea Research Institute of Standards and Science)
Yee, Dae-Su (Length/Time Metrology Group, Division of Physical Metrology, Korea Research Institute of Standards and Science)
Kim, Young-Beom (Length/Time Metrology Group, Division of Physical Metrology, Korea Research Institute of Standards and Science)
Kwon, Taeg-Yong (Length/Time Metrology Group, Division of Physical Metrology, Korea Research Institute of Standards and Science)
Publication Information
Korean Journal of Optics and Photonics / v.17, no.6, 2006 , pp. 514-518 More about this Journal
Abstract
We have transferred highly stable 100 MHz RF through a 23 km fiber network. The fiber-induced phase noise due to the vibration and the temperature fluctuation in the optical path is detected and is compensated by configuring a noise-canceling servo. The transfer instability was $6{\times}10^{14}$ at 1 s of averaging time and $2{\times}10^{-17}$ at 10000 s of averaging time. The single sideband phase noise was greatly reduced by more than 20 dB below the Fourier frequency of 1 kHz. The transferred RF has nearly the same stability as the original reference frequency.
Keywords
RF transfer; Fiber network; Phase noise; Transfer stability;
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