Abstract

An optical fiber vibration sensor based on a polarization diversity scheme has been developed to study structural vibration properties under external disturbance. The polarization diversity scheme has improved signal-to-noise ratio (SNR) by over 13 dB with capability of detection frequency of sub-hertz to tens of kilohertz. The minimum dynamic strain we have detected is 3 nε, and the SNR of the sensor is > 37 dB without any averaging. For the first time, Rayleigh backscattering has been utilized to detect continuous and damped vibration generated by a piezo fiber stretcher and vibrating cantilever with a frequency range of sub-hertz to 16 kHz. We also use this sensor and polarization analyzer to characterize the polarization state change and phase shift of the piezo fiber stretcher in transmission and Rayleigh backscattering up to kilohertz frequency, both results agrees quantitatively.

© 2008 IEEE

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References

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  1. S. W. Doebling, C. R. Farrar, M. B. Prime, D. W. Shevitz, “Damage identification and health monitoring of structural and mechanical systems from changes in their vibration characteristics: A literature review,” Los Alamos National Laboratory Tech. Rep. LA-13070-MS (1996).
  2. T. K. Gangopadhyay, P. J. Henderson, "Vibration: History and measurement with an extrinsic Fabry-Perot sensor with solid-state laser interferometry," Appl. Opt. 38, 2471-2477 (1999).
  3. Y. C. Yang, K. S. Han, "Damage monitoring and impact detection using optical fiber vibration sensors," Smart Mater. Struct. 11, 337-345 (2002).
  4. M. A. Davis, A. D. Kersey, J. Sirkis, E. J. Friebele, "Shape and vibration mode sensing using fiber optic Bragg grating array," Smart Mater. Struct. 5, 759-765 (1996).
  5. H. L. Rivera, J. A. García-Souto, J. Sanz, "Measurements of mechanical vibrations at magnetic cores of power transformers with fiber-optic interferometric intrinsic sensor," IEEE J. Sel. Topics Quantum Electron. 6, 788-797 (2000).
  6. A. J. Rogers, "Polarization-optical time domain reflectometry: A technique for the measurement of field distributions," Appl. Opt. 20, 1060-1074 (1981).
  7. B. Hunttner, B. Gisin, N. Gisin, "Distributed PMD measurement with a Polarization-OTDR in optical fibers," J. Lightw. Technol. 17, 1843-1848 (1999).

2002 (1)

Y. C. Yang, K. S. Han, "Damage monitoring and impact detection using optical fiber vibration sensors," Smart Mater. Struct. 11, 337-345 (2002).

2000 (1)

H. L. Rivera, J. A. García-Souto, J. Sanz, "Measurements of mechanical vibrations at magnetic cores of power transformers with fiber-optic interferometric intrinsic sensor," IEEE J. Sel. Topics Quantum Electron. 6, 788-797 (2000).

1999 (2)

T. K. Gangopadhyay, P. J. Henderson, "Vibration: History and measurement with an extrinsic Fabry-Perot sensor with solid-state laser interferometry," Appl. Opt. 38, 2471-2477 (1999).

B. Hunttner, B. Gisin, N. Gisin, "Distributed PMD measurement with a Polarization-OTDR in optical fibers," J. Lightw. Technol. 17, 1843-1848 (1999).

1996 (1)

M. A. Davis, A. D. Kersey, J. Sirkis, E. J. Friebele, "Shape and vibration mode sensing using fiber optic Bragg grating array," Smart Mater. Struct. 5, 759-765 (1996).

1981 (1)

A. J. Rogers, "Polarization-optical time domain reflectometry: A technique for the measurement of field distributions," Appl. Opt. 20, 1060-1074 (1981).

Appl. Opt. (2)

T. K. Gangopadhyay, P. J. Henderson, "Vibration: History and measurement with an extrinsic Fabry-Perot sensor with solid-state laser interferometry," Appl. Opt. 38, 2471-2477 (1999).

A. J. Rogers, "Polarization-optical time domain reflectometry: A technique for the measurement of field distributions," Appl. Opt. 20, 1060-1074 (1981).

IEEE J. Sel. Topics Quantum Electron. (1)

H. L. Rivera, J. A. García-Souto, J. Sanz, "Measurements of mechanical vibrations at magnetic cores of power transformers with fiber-optic interferometric intrinsic sensor," IEEE J. Sel. Topics Quantum Electron. 6, 788-797 (2000).

J. Lightw. Technol. (1)

B. Hunttner, B. Gisin, N. Gisin, "Distributed PMD measurement with a Polarization-OTDR in optical fibers," J. Lightw. Technol. 17, 1843-1848 (1999).

Smart Mater. Struct. (2)

Y. C. Yang, K. S. Han, "Damage monitoring and impact detection using optical fiber vibration sensors," Smart Mater. Struct. 11, 337-345 (2002).

M. A. Davis, A. D. Kersey, J. Sirkis, E. J. Friebele, "Shape and vibration mode sensing using fiber optic Bragg grating array," Smart Mater. Struct. 5, 759-765 (1996).

Other (1)

S. W. Doebling, C. R. Farrar, M. B. Prime, D. W. Shevitz, “Damage identification and health monitoring of structural and mechanical systems from changes in their vibration characteristics: A literature review,” Los Alamos National Laboratory Tech. Rep. LA-13070-MS (1996).

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