Journal of the Korean Institute of Illuminating and Electrical Installation Engineers (조명전기설비학회논문지)

The Korean Institute of IIIuminating and Electrical Installation Engineers (한국조명전기설비학회)
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A Quasi-Distributed Fiber-Optic Sensor System using an InGaAs PD Array and FBG Sensors for the Safety Monitoring of Electric Power Systems

InGaAs PD 어레이와 광섬유 격자를 이용한 준분배형 전력설비 안전진단 시스템

  • 김현진 (전북대학교 전자정보공학부) ;
  • 박형준 (전북대학교 BK21-전북전자정보고급인력양성사업단) ;
  • 송민호 (전북대학교 전자정보공학부)
  • Received : 2009.12.14
  • Accepted : 2010.02.01
  • Published : 2010.02.28
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Abstract

We constructed a quasi-distributed fiber-optic sensor network for the safety monitoring in power systems. It is possible to construct many of FBG sensors in a line and to be immune from electromagnetic noise. For demodulation analysis of reflected wavelength from FBG sensor, we proposed a simple and fast system using a InGaAs photo-diode array and a holographic diffraction grating. For accuracy improvement of the proposed demodulation system, we applied a Gaussian line-fitting algorithm. We obtained about 4[pm] of wavelength resolution and stability.

광섬유 격자를 이용한 센서 네트워크를 이용하여 준분배형 전력설비 안전진단 시스템을 구성하였다. FBG를 이용한 센서는 한 개의 라인에 복수의 센서가 설치가능하며, 전자기 노이즈에 영향을 받지 않는 특성을 가진다. 광섬유 격자에서 반사되는 파장의 신호를 분석하기 위하여 InGaAs PD 어레이와 홀로그램 회절격자를 이용하여 구조가 간단하면서도 고속의 파장복조가 가능하도록 하였다. 제안한 시스템의 정확도를 개선하기 위해 가우시안 라인피팅을 적용하였고, 높은 파장 정밀도(4[pm])와 동작 안정성을 얻을 수 있음을 확인하였다.

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References

  1. http://news.mk.co.kr/outside/view.php?year=2008&no=596310
  2. W. W. Morey, G. Meltz, and W. H. Glenn, "Bragg-grating temperature and strain sensors," Proc. OFS, 526, 1989.
  3. W. W. Morey, G. Meltz, and W. H. Glenn, "Fibre optic Bragg grating sensors," Proc. SPIE, 1169, 98-107, 1994.
  4. A. D. Kersey, M. A. Davis, H. J. Patrick, M. LeBlanc, K. P. Koo, C. G. Askins, M. A. Putnam, and E. J. Friebele, "Fiber Grating Sensors," J. Lightwave Technol., 15, 1442-1462, 1997. https://doi.org/10.1109/50.618377
  5. A. D. Kersey, T. A. Berkoff, and W. W. Morey, "Multiplexed fiber Bragg grating strain-sensor system with a fiber Fabry-Perot wavelength filter," Opt. Lett., 18, 1370-1372, 1993. https://doi.org/10.1364/OL.18.001370
  6. A. Orthonos and K. Kalli, "Fiber Bragg gratings: Fundamentals and applications in telecommuncations and sensing," Boston, Artech House, 1999.
  7. H. Kim, H. Park nad M. Song, "Linear interrogation of distributed fiber grating temperature sensor network using a fabry-perot ITU filter", KIIEE, vol. 21, no. 7, pp. 54-60, 2007. https://doi.org/10.5207/JIEIE.2007.21.7.054
  8. H. Park and M. Song, "Linear FBG Temperature Sensor Interrogation with Fabry-Perot ITU Multi-wavelength Reference," Sensors, 8, 6769-6776, 2008. https://doi.org/10.3390/s8106769
  9. R. J. Campbell and R. Kashyap, "Spectral profile and multiplexing of Bragg gratings in photosensitive fiber," Opt. Lett., 16, 898-900, 1991. https://doi.org/10.1364/OL.16.000898
  10. H. Lee, H. Park, J. Lee, and M. Song, "Accuracy improvement in peak positioning of spectrally distorted FBG sensors by Gaussian curve-fitting," Appl. Opt., 48, 2205-2208, 2007.