Abstract

In order to do continuous health monitoring of large structures, it is necessary that the distributed sensing of strain and temperature of the structures be measured. So, we present the temperature compensation of a signal from a fiber optic BOTDA (Brillouin Optical Time Domain Analysis) sensor. A fiber optic BOTDA sensor has good performance of strain measurement. However, the signal of a fiber optic BOTDA sensor is influenced by strain and temperature. Therefore, we applied an optical fiber on the beam as follows: one part of the fiber, which is sensitive to the strain and the temperature, is bonded on the surface of the beam and another part of the fiber, which is only sensitive to the temperature, is located nearby the strain sensing fiber. Therefore, the strains can be determined from the strain sensing fiber while compensating for the temperature from the temperature sensing fiber. These measured strains were compared with the strains from electrical strain gages. After temperature compensation, it was concluded that the strains from the fiber optic BOTDA sensor had good coincidence with those values of the conventional electrical strain gages.

© 2003 Optical Society of Korea

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References

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  1. R. O. Claus, J. C. Mckeeman, R. G. May, and K. D. Bennet, “Optical Fiber Sensors and Signal Processing for Smart Materials and Structures Applications.” Structures and Mathematical Issues Workshop, Proc. of ARO Smart Materials, pp. 29-38, 1988.
  2. M. K. Barnoski and S. M. Jensen, Applied Optics, Vol. 15, No. 9, pp. 2112-2115, Sept. 1976.
    [CrossRef]
  3. M. Nickles, L. Thevenaz, and P. Robert, “Simple distributed fiber sensor based on Brillouin gain spectrum analysis,” Optics Letters, Vol. 21, No. 10, pp.758-760, 1996.
    [CrossRef]
  4. V. Lecoeuche, D. J. Webb, C. N. Pannel, and D. A. Jackson, “Brillouin Based Distributed Fibre Sensor Incorporating a Mode-locked Brillouin Fibre Ring Laser,” Optics Communications, Vol.152, pp. 263-268, 1998.
    [CrossRef]
  5. L. Thevenaz, M. Facchini, A. Fellay, and P. Robert, “Monitoring of large structure using distributed Brillouin scattering fiber sensing,” OFS-13, pp.345-348, 1999.
  6. G. P. Agrawal, Nonlinear Fiber Optics, (Academic press, New York, 2nd ed., 1995), pp.370-378.
  7. T. Horiguchi and M. Tateta, “BOTDA-Nondestructive Measurement of Single-mode Optical Fiber Attenuation Characteristics Using Brillouin Interaction Theory,” Journal of Lightwave Technology, Vol. 7, No. 8, pp.1170-1176, 1989.
    [CrossRef]
  8. I. B. Kwon, M. Choi, J. Yu, and S. Baik, “Development of fiber optic BOTDA sensor,” Hankook Kwanghak Hoeji, Vol. 12, No. 4, pp. 294-299 (in Korean), 2001.

2001 (1)

I. B. Kwon, M. Choi, J. Yu, and S. Baik, “Development of fiber optic BOTDA sensor,” Hankook Kwanghak Hoeji, Vol. 12, No. 4, pp. 294-299 (in Korean), 2001.

1999 (1)

L. Thevenaz, M. Facchini, A. Fellay, and P. Robert, “Monitoring of large structure using distributed Brillouin scattering fiber sensing,” OFS-13, pp.345-348, 1999.

1998 (1)

V. Lecoeuche, D. J. Webb, C. N. Pannel, and D. A. Jackson, “Brillouin Based Distributed Fibre Sensor Incorporating a Mode-locked Brillouin Fibre Ring Laser,” Optics Communications, Vol.152, pp. 263-268, 1998.
[CrossRef]

1996 (1)

M. Nickles, L. Thevenaz, and P. Robert, “Simple distributed fiber sensor based on Brillouin gain spectrum analysis,” Optics Letters, Vol. 21, No. 10, pp.758-760, 1996.
[CrossRef]

1995 (1)

G. P. Agrawal, Nonlinear Fiber Optics, (Academic press, New York, 2nd ed., 1995), pp.370-378.

1989 (1)

T. Horiguchi and M. Tateta, “BOTDA-Nondestructive Measurement of Single-mode Optical Fiber Attenuation Characteristics Using Brillouin Interaction Theory,” Journal of Lightwave Technology, Vol. 7, No. 8, pp.1170-1176, 1989.
[CrossRef]

1988 (1)

R. O. Claus, J. C. Mckeeman, R. G. May, and K. D. Bennet, “Optical Fiber Sensors and Signal Processing for Smart Materials and Structures Applications.” Structures and Mathematical Issues Workshop, Proc. of ARO Smart Materials, pp. 29-38, 1988.

1976 (1)

M. K. Barnoski and S. M. Jensen, Applied Optics, Vol. 15, No. 9, pp. 2112-2115, Sept. 1976.
[CrossRef]

Applied Optics (1)

M. K. Barnoski and S. M. Jensen, Applied Optics, Vol. 15, No. 9, pp. 2112-2115, Sept. 1976.
[CrossRef]

Korean Journal of Optics and Photonics (1)

I. B. Kwon, M. Choi, J. Yu, and S. Baik, “Development of fiber optic BOTDA sensor,” Hankook Kwanghak Hoeji, Vol. 12, No. 4, pp. 294-299 (in Korean), 2001.

Lightwave Technology, Journal of (1)

T. Horiguchi and M. Tateta, “BOTDA-Nondestructive Measurement of Single-mode Optical Fiber Attenuation Characteristics Using Brillouin Interaction Theory,” Journal of Lightwave Technology, Vol. 7, No. 8, pp.1170-1176, 1989.
[CrossRef]

OFS-13 (1)

L. Thevenaz, M. Facchini, A. Fellay, and P. Robert, “Monitoring of large structure using distributed Brillouin scattering fiber sensing,” OFS-13, pp.345-348, 1999.

Optics Communications (1)

V. Lecoeuche, D. J. Webb, C. N. Pannel, and D. A. Jackson, “Brillouin Based Distributed Fibre Sensor Incorporating a Mode-locked Brillouin Fibre Ring Laser,” Optics Communications, Vol.152, pp. 263-268, 1998.
[CrossRef]

Optics Letters (1)

M. Nickles, L. Thevenaz, and P. Robert, “Simple distributed fiber sensor based on Brillouin gain spectrum analysis,” Optics Letters, Vol. 21, No. 10, pp.758-760, 1996.
[CrossRef]

Structures and Mathematical Issues Workshop, Proc. of ARO Smart Materials (1)

R. O. Claus, J. C. Mckeeman, R. G. May, and K. D. Bennet, “Optical Fiber Sensors and Signal Processing for Smart Materials and Structures Applications.” Structures and Mathematical Issues Workshop, Proc. of ARO Smart Materials, pp. 29-38, 1988.

Other (1)

G. P. Agrawal, Nonlinear Fiber Optics, (Academic press, New York, 2nd ed., 1995), pp.370-378.

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