Journal of the Korea Institute of Information and Communication Engineering (한국정보통신학회논문지)

The Korea Institute of Information and Commucation Engineering (한국정보통신학회)
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Radiation Effects on Fiber Bragg Grating Sensors Written in UV KrF Laser Process Condition

UV KrF 레이저 공정조건에 따른 FBG 센서의 방사선 영향

  • Kim, Jong-Yeol (Department of Nuclear Convergence Technology Development, Korea Atomic Energy Research Institute (KAERI)) ;
  • Lee, Nam-Ho (Department of Nuclear Convergence Technology Development, Korea Atomic Energy Research Institute (KAERI)) ;
  • Jung, Hyun-Kyu (Department of Nuclear Convergence Technology Development, Korea Atomic Energy Research Institute (KAERI))
  • Received : 2015.11.06
  • Accepted : 2015.12.14
  • Published : 2016.01.31
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Abstract

We studied the effect of $Co^{60}$ gamma-radiation on the FBGs by a variation of grating the fabrication parameters. The FBGs were fabricated in a different UV KrF laser intensity using the same boron co-doped photo-sensitive fiber and exposed to gamma-radiation up to a dose of 33.8 kGy. According to the experimental data and analysis results, We confirmed that the laser intensity for grating inscription has a highly effect on the radiation sensitivity of the FBGs and the radiation-induced Bragg wavelength shift by the change of laser process condition showed a difference more than about 30 %.

본 논문에서는 광섬유 브래그 격자의 공정조건 변화에 따른 $Co^{60}$ 감마방사선 영향을 연구하였다. 광섬유 브래그 격자는 붕소가 첨가된 광민감 광섬유를 이용하여 UV KrF 레이저 세기를 달리하여 제작하였으며, 제작된 광섬유 브래그 격자 센서에 총 선량 33.8 kGy 감마선을 조사하였다. 실험결과를 통하여, 격자 공정을 위한 UV 레이저 세기가 광섬유 브래그 격자의 방사선 민감도에 큰 영향을 줄 수 있다는 것을 확인하였으며, 레이저 공정조건 변화에 따른 방사선에 의한 광섬유 브래그 파장의 변화는 30 % 이상의 차이를 보였다.

Keywords

References

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