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Applied Optics

Applied Optics


  • Vol. 32, Iss. 19 — Jul. 1, 1993
  • pp: 3601–3609

Practical fiber-optic Bragg grating strain gauge system

Serge M. Melle, Kexing Liu, and Raymond M. Measures  »View Author Affiliations

Applied Optics, Vol. 32, Issue 19, pp. 3601-3609 (1993)

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A fiber-optic strain gauge system for use in structural monitoring and smart-structure applications is described. The strain gauge uses a fiber-optic Bragg grating sensor to measure strain and a passive, wavelength demodulation system to determine the wavelength of the narrow-band, backreflected spectrum from the grating sensor. The fiber-optic strain gauge system permits the measurement of both static and dynamic strains with a noise-limited resolution of 0.44 microstrain / Hz , a measurement dynamic range of 27.8 dB, and a bandwidth of 250 Hz.

© 1993 Optical Society of America

Original Manuscript: September 22, 1992
Published: July 1, 1993

Serge M. Melle, Kexing Liu, and Raymond M. Measures, "Practical fiber-optic Bragg grating strain gauge system," Appl. Opt. 32, 3601-3609 (1993)

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