Korean Journal of Optics and Photonics (한국광학회지)

Optical Society of Korea (한국광학회)
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Measurement method for profiling residual stress of an optical fiber

광섬유의 잔류응력 측정 방법

  • 박용우 (반도체 원천기술연구소, 한국전자통신연구원) ;
  • 백문철 (반도체 원천기술연구소, 한국전자통신연구원) ;
  • 진애경 (정보통신공학과, 광주과학기술원) ;
  • 백운출 (정보통신공학과, 광주과학기술원) ;
  • 김덕영 (정보통신공학과, 광주과학기술원)
  • Published : 2003.06.01
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Abstract

A novel method was proposed for determining the residual stress profile of an optical fiber by using a modified polariscope. Measurement results of the axisymmetric residual stress for a conventional single-mode fiber were demonstrated by using this method. It was found that non-uniform stress is distributed in the cladding of the fiber. This means that large mechanical stress is induced as a function of temperature generated near the neck shape of the fiber preform.

광섬유의 잔류응력(residual stress)을 측정하기 위해 위상보정 편광기(polariscope)를 새롭게 구성하고, 간섭이나 회절에 대한 영향을 최소화시키면서 빠르고 정확하게 측정하는 방법을 제시하였다. 이 방법을 이용하여 일반 광섬유의 잔류 응력 분포를 측정할 수 있었다. 또한 광섬유의 잔류응력이 모재의 잔류응력분포와 달리 인출 시 발생하는 광섬유 내 온도의 냉각곡선에 밀접한 관계를 갖고 있음을 알 수 있었다.

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References

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