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

위상잡음 제거에 의한 광섬유망에서의 높은 안정도의 RF 전송

  • 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)
  • 이원규 (한국표준과학연구원 기반표준부 길이/시간그룹) ;
  • 이대수 (한국표준과학연구원 기반표준부 길이/시간그룹) ;
  • 김영범 (한국표준과학연구원 기반표준부 길이/시간그룹) ;
  • 권택용 (한국표준과학연구원 기반표준부 길이/시간그룹)
  • Published : 2006.12.25

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.

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