Abstract

To improve measurement accuracy of spectrally distorted fiber Bragg grating temperature sensors, reflection profiles were curve fitted to Gaussian shapes, of which center positions were transformed into temperature information. By applying the Gaussian curve-fitting algorithm in a tunable bandpass filter demodulation scheme, 0.3°C temperature resolution was obtained with a severely distorted grating sensor, which was much better than that obtained using the highest peak search algorithm. A binary search was also used to retrieve the optimal fitting curves with the least amount of processing time.

© 2007 Optical Society of America

Full Article  |  PDF Article

References

  • View by:
  • |
  • |
  • |

  1. 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, 1442-1463 (1997).
    [Crossref]
  2. C. C. Chang, G. A. Johnson, and S. T. Vohra, "Effects of fiber Bragg grating spectrum distortion on scanning Fabry-Perot and fiber interferometer based wavelength shift detection schemes," in Technical Digest of the 13th Optical Fiber Sensors Conference (IEEE, 1999), pp. 141-144.
  3. C. C. Chang and S. T. Vohra, "Spectral broadening due to non-uniform strain fields in fibre Bragg grating based transducers," Electron. Lett. 34, 1778-1779 (1998).
    [Crossref]
  4. B. Glisic and D. Inaudi, "Sensing tape for easy integration of optical fiber sensors in composite structures," in Technical Digest of the 16th Optical Fiber Sensors Conference (IEEE, 2003), pp. 482-485.
  5. Y. B. Lin, K. C. Chang, J. C. Chem, and L. A. Wang, "Packaging methods of fiber-Bragg grating sensors in civil structure applications," IEEE Sensors J. 5, 419-423 (2005).
    [Crossref]
  6. Z. Jin and M. Song, "Fiber grating sensor array interrogation with time-delayed sampling of a wavelength-scanned fiber laser," IEEE Photon. Technol. Lett. 16, 1924-1926 (2004).
    [Crossref]
  7. 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).
    [Crossref] [PubMed]
  8. C. C. Chan, W. Jin, H. L. Ho, D. N. Wang, and Y. Wang, "Improvement of measurement accuracy of fibre Bragg grating sensor systems by use of gas absorption lines as multi-wavelength references," Electron. Lett. 37, 742-743 (2001).
    [Crossref]

2005 (1)

Y. B. Lin, K. C. Chang, J. C. Chem, and L. A. Wang, "Packaging methods of fiber-Bragg grating sensors in civil structure applications," IEEE Sensors J. 5, 419-423 (2005).
[Crossref]

2004 (1)

Z. Jin and M. Song, "Fiber grating sensor array interrogation with time-delayed sampling of a wavelength-scanned fiber laser," IEEE Photon. Technol. Lett. 16, 1924-1926 (2004).
[Crossref]

2001 (1)

C. C. Chan, W. Jin, H. L. Ho, D. N. Wang, and Y. Wang, "Improvement of measurement accuracy of fibre Bragg grating sensor systems by use of gas absorption lines as multi-wavelength references," Electron. Lett. 37, 742-743 (2001).
[Crossref]

1998 (1)

C. C. Chang and S. T. Vohra, "Spectral broadening due to non-uniform strain fields in fibre Bragg grating based transducers," Electron. Lett. 34, 1778-1779 (1998).
[Crossref]

1997 (1)

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, 1442-1463 (1997).
[Crossref]

1993 (1)

Askins, C. G.

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, 1442-1463 (1997).
[Crossref]

Berkoff, T. A.

Chan, C. C.

C. C. Chan, W. Jin, H. L. Ho, D. N. Wang, and Y. Wang, "Improvement of measurement accuracy of fibre Bragg grating sensor systems by use of gas absorption lines as multi-wavelength references," Electron. Lett. 37, 742-743 (2001).
[Crossref]

Chang, C. C.

C. C. Chang and S. T. Vohra, "Spectral broadening due to non-uniform strain fields in fibre Bragg grating based transducers," Electron. Lett. 34, 1778-1779 (1998).
[Crossref]

C. C. Chang, G. A. Johnson, and S. T. Vohra, "Effects of fiber Bragg grating spectrum distortion on scanning Fabry-Perot and fiber interferometer based wavelength shift detection schemes," in Technical Digest of the 13th Optical Fiber Sensors Conference (IEEE, 1999), pp. 141-144.

Chang, K. C.

Y. B. Lin, K. C. Chang, J. C. Chem, and L. A. Wang, "Packaging methods of fiber-Bragg grating sensors in civil structure applications," IEEE Sensors J. 5, 419-423 (2005).
[Crossref]

Chem, J. C.

Y. B. Lin, K. C. Chang, J. C. Chem, and L. A. Wang, "Packaging methods of fiber-Bragg grating sensors in civil structure applications," IEEE Sensors J. 5, 419-423 (2005).
[Crossref]

Davis, M. A.

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, 1442-1463 (1997).
[Crossref]

Friebele, E. J.

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, 1442-1463 (1997).
[Crossref]

Glisic, B.

B. Glisic and D. Inaudi, "Sensing tape for easy integration of optical fiber sensors in composite structures," in Technical Digest of the 16th Optical Fiber Sensors Conference (IEEE, 2003), pp. 482-485.

Ho, H. L.

C. C. Chan, W. Jin, H. L. Ho, D. N. Wang, and Y. Wang, "Improvement of measurement accuracy of fibre Bragg grating sensor systems by use of gas absorption lines as multi-wavelength references," Electron. Lett. 37, 742-743 (2001).
[Crossref]

Inaudi, D.

B. Glisic and D. Inaudi, "Sensing tape for easy integration of optical fiber sensors in composite structures," in Technical Digest of the 16th Optical Fiber Sensors Conference (IEEE, 2003), pp. 482-485.

Jin, W.

C. C. Chan, W. Jin, H. L. Ho, D. N. Wang, and Y. Wang, "Improvement of measurement accuracy of fibre Bragg grating sensor systems by use of gas absorption lines as multi-wavelength references," Electron. Lett. 37, 742-743 (2001).
[Crossref]

Jin, Z.

Z. Jin and M. Song, "Fiber grating sensor array interrogation with time-delayed sampling of a wavelength-scanned fiber laser," IEEE Photon. Technol. Lett. 16, 1924-1926 (2004).
[Crossref]

Johnson, G. A.

C. C. Chang, G. A. Johnson, and S. T. Vohra, "Effects of fiber Bragg grating spectrum distortion on scanning Fabry-Perot and fiber interferometer based wavelength shift detection schemes," in Technical Digest of the 13th Optical Fiber Sensors Conference (IEEE, 1999), pp. 141-144.

Kersey, A. D.

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, 1442-1463 (1997).
[Crossref]

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).
[Crossref] [PubMed]

Koo, K. P.

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, 1442-1463 (1997).
[Crossref]

LeBlanc, M.

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, 1442-1463 (1997).
[Crossref]

Lin, Y. B.

Y. B. Lin, K. C. Chang, J. C. Chem, and L. A. Wang, "Packaging methods of fiber-Bragg grating sensors in civil structure applications," IEEE Sensors J. 5, 419-423 (2005).
[Crossref]

Morey, W. W.

Patrick, H. J.

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, 1442-1463 (1997).
[Crossref]

Putnam, M. A.

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, 1442-1463 (1997).
[Crossref]

Song, M.

Z. Jin and M. Song, "Fiber grating sensor array interrogation with time-delayed sampling of a wavelength-scanned fiber laser," IEEE Photon. Technol. Lett. 16, 1924-1926 (2004).
[Crossref]

Vohra, S. T.

C. C. Chang and S. T. Vohra, "Spectral broadening due to non-uniform strain fields in fibre Bragg grating based transducers," Electron. Lett. 34, 1778-1779 (1998).
[Crossref]

C. C. Chang, G. A. Johnson, and S. T. Vohra, "Effects of fiber Bragg grating spectrum distortion on scanning Fabry-Perot and fiber interferometer based wavelength shift detection schemes," in Technical Digest of the 13th Optical Fiber Sensors Conference (IEEE, 1999), pp. 141-144.

Wang, D. N.

C. C. Chan, W. Jin, H. L. Ho, D. N. Wang, and Y. Wang, "Improvement of measurement accuracy of fibre Bragg grating sensor systems by use of gas absorption lines as multi-wavelength references," Electron. Lett. 37, 742-743 (2001).
[Crossref]

Wang, L. A.

Y. B. Lin, K. C. Chang, J. C. Chem, and L. A. Wang, "Packaging methods of fiber-Bragg grating sensors in civil structure applications," IEEE Sensors J. 5, 419-423 (2005).
[Crossref]

Wang, Y.

C. C. Chan, W. Jin, H. L. Ho, D. N. Wang, and Y. Wang, "Improvement of measurement accuracy of fibre Bragg grating sensor systems by use of gas absorption lines as multi-wavelength references," Electron. Lett. 37, 742-743 (2001).
[Crossref]

Electron. Lett. (2)

C. C. Chang and S. T. Vohra, "Spectral broadening due to non-uniform strain fields in fibre Bragg grating based transducers," Electron. Lett. 34, 1778-1779 (1998).
[Crossref]

C. C. Chan, W. Jin, H. L. Ho, D. N. Wang, and Y. Wang, "Improvement of measurement accuracy of fibre Bragg grating sensor systems by use of gas absorption lines as multi-wavelength references," Electron. Lett. 37, 742-743 (2001).
[Crossref]

IEEE Photon. Technol. Lett. (1)

Z. Jin and M. Song, "Fiber grating sensor array interrogation with time-delayed sampling of a wavelength-scanned fiber laser," IEEE Photon. Technol. Lett. 16, 1924-1926 (2004).
[Crossref]

IEEE Sensors J. (1)

Y. B. Lin, K. C. Chang, J. C. Chem, and L. A. Wang, "Packaging methods of fiber-Bragg grating sensors in civil structure applications," IEEE Sensors J. 5, 419-423 (2005).
[Crossref]

J. Lightwave Technol. (1)

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, 1442-1463 (1997).
[Crossref]

Opt. Lett. (1)

Other (2)

C. C. Chang, G. A. Johnson, and S. T. Vohra, "Effects of fiber Bragg grating spectrum distortion on scanning Fabry-Perot and fiber interferometer based wavelength shift detection schemes," in Technical Digest of the 13th Optical Fiber Sensors Conference (IEEE, 1999), pp. 141-144.

B. Glisic and D. Inaudi, "Sensing tape for easy integration of optical fiber sensors in composite structures," in Technical Digest of the 16th Optical Fiber Sensors Conference (IEEE, 2003), pp. 482-485.

Cited By

OSA participates in Crossref's Cited-By Linking service. Citing articles from OSA journals and other participating publishers are listed here.

Alert me when this article is cited.


Figures (6)

Fig. 1
Fig. 1

Experimental setup for the FBG temperature sensor system: BBS, broadband source; PD, photodetector; LPF, lowpass filter.

Fig. 2
Fig. 2

Distortion of FBG spectrum according to applied pressure.

Fig. 3
Fig. 3

Gaussian curve fitting and peak locating by MSE evaluation. The dotted curves are fitted lines.

Fig. 4
Fig. 4

Algorithm searching for minimum MSE center position c min .

Fig. 5
Fig. 5

Temperature measurement using (a) highest peak detection, (b) Gaussian curve fitting, and (c) a thermocouple.

Fig. 6
Fig. 6

Wavelength shifts of a FBG sensor versus thermocouple output: (a) highest peak detection, (b) Gaussian curve fitting. Insets present temperature outputs versus time.

Equations (6)

Equations on this page are rendered with MathJax. Learn more.

MSE = 1 n i 1 n ( x i y i ) 2 ,
MSE ( c i d x ) < MSE ( c i ) < MSE ( c i + d x ) ,
MSE ( c i d x ) > MSE ( c i ) > MSE ( c i + d x ) .
A i + 1 = A i , B i + 1 = c i ,
A i + 1 = c i , B i + 1 = B i .
MSE ( c min d x ) > MSE ( c min ) < MSE ( c min + d x ) .

Metrics