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Optics Letters

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  • Vol. 21, Iss. 17 — Sep. 1, 1996
  • pp: 1405–1407

Distributed strain measurement based on a fiber Bragg grating and its reflection spectrum analysis

M. LeBlanc, S. Y. Huang, M. Ohn, R. M. Measures, A. Guemes, and A. Othonos  »View Author Affiliations


Optics Letters, Vol. 21, Issue 17, pp. 1405-1407 (1996)
http://dx.doi.org/10.1364/OL.21.001405


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Abstract

A method of extracting the strain profile along a fiber Bragg grating from the intensity reflection spectrum is described. The procedure is based on a filter synthesis theory that relates the aperiodicity of a grating with its reflection spectrum. To illustrate the approach, we measured the strain profile near a hole in a plate and obtained a strain resolution of 80 μ∊. The spatial resolution depends on the strain gradient; i.e., the higher the gradient, the better the resolution. A resolution of 0.8 mm was achieved for a 5-mm grating with a gradient of 250 μ∊/mm.

© 1996 Optical Society of America

History
Original Manuscript: March 27, 1996
Published: September 1, 1996

Citation
M. LeBlanc, A. Guemes, A. Othonos, S. Y. Huang, M. Ohn, and R. M. Measures, "Distributed strain measurement based on a fiber Bragg grating and its reflection spectrum analysis," Opt. Lett. 21, 1405-1407 (1996)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-21-17-1405


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