Korean Journal of Optics and Photonics (한국광학회지)

Optical Society of Korea (한국광학회)
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Active cancellation of phase noise induced by an optical fiber for delivery of optical frequency standard

광섬유를 통한 광 주파수 전송에서 광 위상 잡음의 능동 제거

  • Lee, Won-Kyu (Length/Time Metrology Group, Division of Physical Metrology, Korea Research Institute of Standards and Science) ;
  • Kim, Jae-Wan (Length/Time Metrology Group, Division of Physical Metrology, Korea Research Institute of Standards and Science) ;
  • Ryu, Han-Young (Length/Time Metrology Group, Division of Physical Metrology, Korea Research Institute of Standards and Science) ;
  • Kim, Eok-Bong (Length/Time Metrology Group, Division of Physical Metrology, Korea Research Institute of Standards and Science)
  • 이원규 (한국표준과학연구원 기반표준부 길이/시간그룹) ;
  • 김재완 (한국표준과학연구원 기반표준부 길이/시간그룹) ;
  • 유한영 (한국표준과학연구원 기반표준부 길이/시간그룹) ;
  • 김억봉 (한국표준과학연구원 기반표준부 길이/시간그룹)
  • Published : 2007.02.25
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Abstract

We have transferred a narrow-linewidth $1.5{\mu}m$ laser beam through a 525 m fiber network with excellent transfer stability. The fiber-induced optical phase noise during the fiber transmission is cancelled by configuring a noise-canceling servo. The transfer instability was $2{\times}10^{-17}$ at 1 s of averaging time. We quantitatively analyzed the transferred optical frequency in the frequency domain and in the time domain.

광섬유 망을 통해 수 kHz의 좁은 선폭을 가지는 $1.5{\mu}m$ 레이저광원을 높은 전송 안정도로 전송하였다. 525 m 길이의 단일모드 광섬유를 통과하면서 발생하는 광 위상 잡음을 능동적으로 제거하는 실험 장치를 구성하였고, 이렇게 하여 전송된 광 주파수의 전송 안정도는 1 초의 평균시간에서 $2{\times}10^{-17}$로 측정되었다. 전송된 광 주파수의 품질을 주파수 영역과 시간 영역에서 정량적으로 분석하였다.

Keywords

References

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