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Optics Letters

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  • Vol. 24, Iss. 16 — Aug. 15, 1999
  • pp: 1091–1093

Transverse load sensing by use of pi-phase-shifted fiber Bragg gratings

Michel LeBlanc, Sandeep T. Vohra, Tsung E. Tsai, and E. Joseph Friebele  »View Author Affiliations


Optics Letters, Vol. 24, Issue 16, pp. 1091-1093 (1999)
http://dx.doi.org/10.1364/OL.24.001091


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Abstract

The birefringence of a π -phase-shifted fiber Bragg grating can be determined with high accuracy by measurement of the polarization-induced spectral splitting of its narrow central transmission window. The use of this feature for sensing of a load applied in the direction transverse to the optical fiber is demonstrated. A distributed force resolution of 1.4×10<sup>-3</sup> N/mm was obtained, which corresponds to a difference in the principal strains of the fiber core of 0.5μ∈ . We also show that the transverse load response of the sensor is insensitive to temperature.

© 1999 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(230.1480) Optical devices : Bragg reflectors

Citation
Michel LeBlanc, Sandeep T. Vohra, Tsung E. Tsai, and E. Joseph Friebele, "Transverse load sensing by use of pi-phase-shifted fiber Bragg gratings," Opt. Lett. 24, 1091-1093 (1999)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-24-16-1091


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