Title :
Strain and Temperature Discrimination Using Modal Interferometry in Bragg Fibers
Author :
Frazão, Orlando ; Amaral, Luís M N ; Baptista, José M. ; Roy, Philippe ; Jamier, Raphael ; Février, Sébastien
Author_Institution :
INESC Porto-Inst. de Eng. de Sist. e Comput. do Porto, Porto, Portugal
Abstract :
The strain and temperature sensing characteristics of a modal interferometer based on two Bragg fibers have been investigated. The special nature of this sensor is that the two Bragg fibers used present a different external cladding shape. It appears that the sensitivity to the sensing parameters are different for the two Bragg fibers, which makes it possible to fabricate several sensing configurations based on the combination of these two Bragg fibers for strain and temperature discrimination.
Keywords :
Bragg gratings; fibre optic sensors; light interferometry; optical fibre cladding; strain sensors; temperature sensors; Bragg fibers; external cladding shape; modal interferometry; strain sensing; temperature sensing; Optical fiber dispersion; Optical fiber polarization; Optical fiber sensors; Strain; Temperature measurement; Bragg fiber; interferometer; modal interferometry; strain and temperature measurement;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2010.2076357
