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Curvature Measurement Using Fiber Bragg Gratings

파이버 브래그 격자를 이용한 곡률 측정

  • Published : 2008.08.31

Abstract

To measure the curvature, in this paper, we investigate an optical curvature sensor based on the fiber Bragg gratings. We observed the variation of the Bragg resonant wavelength shift to measure the curvature change. From the experimental results, we knew that the Brags resonant wavelength shift was lineally increased with the increase of the curvature from $0\;m^{-1}$ to $10\;m^{-1}$. It's slope is about $8.8\;pm/m^{-1}$. On the other hand, the spectral reflection decreased with the increase of the curvature.

본 논문에서는 곡률을 측정하기 위해 파이버 브래그 격자를 이용한 곡률 센서에 대해 연구하고자 한다. 곡률의 변화를 측정하기 위해 브래그 공진파장의 이동 변화를 측정하였다. 실험견과로부터 곡률이 $0\;m^{-1}$에서 $10\;m^{-1}$까지 증가함에 따라 반사 스펙트럼은 감소하나. 브래그 공진 파장의 변화량은 선형적으로 증가함을 알 수 있었으며, 기울기는 대략 $8.8\;pm/m^{-1}$ 이었다. 한편, 반사 스펙트럼은 곡률이 증가함에 따라 감소하였다.

Keywords

References

  1. K. O. Hill and G. Meltz, “Fiber Bragg grating technology fundamentals and overview,” J. Lightwave Technol., vol. 15, no. 8, pp. 1263-1276, 1997. https://doi.org/10.1109/50.618320
  2. Y. J. Rao, “In-fiber Bragg grating sensors,” Meas. Sci. Technol., vol. 8, no. 4, pp. 355-375, 1997. https://doi.org/10.1088/0957-0233/8/4/002
  3. T. Erdogan, "Fiber Grating Spectra," J. Lightwave Technol., vol. 15, no. 8, pp. 1277-1294, 1997. https://doi.org/10.1109/50.618322
  4. A. Othonos and K. Kalli, Fiber Bragg Gratings Fundamentals and Application in Telecommunication and Sensing, Artech House, 1999.
  5. M. Mahmoud and Z. Ghassemlood, “Tunable fiber gratings modeling and simulation,” Proceedings of the 36th Annual Simulation Symposium(ANSS) 2003.
  6. R. W. Waynant and M. N. Ediger, Electro-Optics Handbook, 2nd Ed., McGraw-Hill, pp. 21.7-21.8, 2000.
  7. M. Ibsen, S. Y. Set, G. S. Goh, and K. Kikuchi,“Broad-band continuously tunable all-fiber DFB lasers,” IEEE Photon Technol. Lett., vol. 14, no. 1, pp. 21-23, 2002. https://doi.org/10.1109/68.974148
  8. M. J. Gander, W. N. MacPherson, R. McBride, J. D. C. Jones, L. Zhang, I. Bennion, P. M. Blanchard, J. G. Burnett and A. H. Greenaway, "Bend measurement using Bragg gratings in multicore fibre," Electronics Lett., Vol. 36, No. 2, pp. 120-121, 2000. https://doi.org/10.1049/el:20000157