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Applied Optics

Applied Optics


  • Vol. 41, Iss. 9 — Mar. 20, 2002
  • pp: 1661–1667

Multipoint Temperature-Independent Fiber-Bragg-Grating Strain-Sensing System Employing an Optical-Power-Detection Scheme

Yan-Ju Chiang, Likarn Wang, Horng-Shyang Chen, Chih-Chung Yang, and Wen-Fung Liu  »View Author Affiliations

Applied Optics, Vol. 41, Issue 9, pp. 1661-1667 (2002)

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A temperature-independent fiber-Bragg-grating strain-sensing system, based on a novel optical-power-detection scheme, is developed and analyzed. In this system a pair of fiber Bragg gratings with reflection spectra either partially or substantially overlapping is placed side by side to form a temperature-independent strain-sensor unit. Conventional wavelength-interrogation techniques are not used here, and instead an optical-power-detection scheme is proposed to directly calibrate the measurand, i.e., the strain. Unlike the conventional approach in a multiplexed sensing system, the presented power-detection-based interrogation method does not need the fiber-Bragg-grating sensors to be spectrally separate. The only requirement is that the spectra of the two fiber Bragg gratings of each sensor unit in a multiplexed system be identical or slightly separate (slightly overlapping spectra would also work in the sensing scheme) and the source’s optical power be sufficient for sensitive measurement. Based on a three-sensor-unit system, we demonstrate simple strain measurements of high linearity (±0.4%), good sensitivity [2 microstrains (μS)], high thermal stability (±0.8%), and zero cross talk. The effects of light source spectral flatness and fiber bending loss on measurement accuracy are also discussed.

© 2002 Optical Society of America

OCIS Codes
(040.1880) Detectors : Detection
(050.2770) Diffraction and gratings : Gratings
(060.2310) Fiber optics and optical communications : Fiber optics
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(060.2410) Fiber optics and optical communications : Fibers, erbium
(120.6810) Instrumentation, measurement, and metrology : Thermal effects

Yan-Ju Chiang, Likarn Wang, Horng-Shyang Chen, Chih-Chung Yang, and Wen-Fung Liu, "Multipoint Temperature-Independent Fiber-Bragg-Grating Strain-Sensing System Employing an Optical-Power-Detection Scheme," Appl. Opt. 41, 1661-1667 (2002)

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  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 sensor,” J. Lightwave Technol. 15, 1442–1463 (1997).
  2. J. Mora, A. Diez, J. L. Cruz, and M. V. Andres, “A magnetostrictive sensor interrogated by fiber gratings for dc current and temperature discrimination,” IEEE Photon. Technol. 12, 1680–1682 (2000).
  3. G. A. Johnson, M. D. Todd, B. L. Althouse, and C. C. Chang, “Fiber Bragg grating interrogation and multiplexing with a 3 × 3 coupler and a scanning filter,” J. Lightwave Technol. 18, 1101–1105 (2000).
  4. A. D. Kersey, T. A. Berkoff, and W. W. Morey, “High-resolution fiber-grating-based strain sensor with interferometric wavelength-shift detection,” Electron. Lett. 28, 236–238 (1992).
  5. A. Ezbiri, A. Munoz, S. E. Kanellopoulos, and V. A. Handerek, “High resolution fiber Bragg grating sensor demodulation using a diffraction grating spectrometer and CCD detection,” in IEE Colloquium on Optical Techniques for Smart Structures and Structural Monitoring, Digest 1997/033 (Institute of Electrical Engineers, London, U.K., 1997).
  6. A. Arie, B. Lissak, and M. Tur, “Static fiber-Bragg grating strain sensing using frequency-locked lasers,” J. Lightwave Technol. 17, 1849–1854 (1999).
  7. L. A. Ferreira, E. V. Diatzikis, J. L. Santos, and F. Farahi, “Frequency-modulated multimode laser diode for fiber Bragg grating sensors,” J. Lightwave Technol. 16, 1620–1630 (1998).
  8. D. A. Jackson, A. B. Lobo Ribeiro, L. Reekie, and J. L. Archambault, “Simple multiplexing scheme for a fiber-optic grating sensor network,” Opt. Lett. 18, 1192–1194 (1993).
  9. K. P. Koo and A. D. Kersey, “Bragg grating-based laser sensors systems with interferometric interrogation and wavelength division multiplexing,” J. Lightwave Technol. 13, 1243–1249 (1995).
  10. M. A. Davis, D. G. Bellemore, M. A. Putnam, and A. D. Kersey, “Interrogation of 60 fiber Bragg grating sensors with microstrain resolution capability,” Electron. Lett. 32, 1393–1394 (1996).
  11. R. W. Fallon, L. Zhang, A. Gloag, and I. Bennion, “Multiplexed identical broadband chirped grating interrogation system for large strain sensing application,” IEEE Photon. Technol. Lett. 9, 1616–1618 (1997).
  12. M. G. Xu, J. L. Archambault, L. Reekie, and J. P. Dakin, “Discrimination between strain and temperature effects using dual-wavelength fiber grating sensors,” Electron. Lett. 30, 1085–1087 (1994).
  13. B. O. Guan, H. Y. Tam, X. M. Tao, and X. Y. Dong, “Simultaneous strain and temperature measurement using a superstructure fiber Bragg grating,” IEEE Photon. Technol. Lett. 12, 675–677 (2000).
  14. W. C. Du, X. M. Tao, and H. Y. Tam, “Fiber Bragg grating cavity sensor for simultaneous measurement of strain and temperature,” IEEE Photon. Technol. Lett. 11, 105–107 (1999).
  15. S. Kim, J. Kwon, S. Kim, and B. Lee, “Temperature-independent strain sensor using chirped grating partially embedded in a glass tube,” IEEE Photon. Technol. Lett. 12, 678–680 (2000).

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