Simultaneous Measurement of Strain and Temperature using Modal Interferometry in Bragg Fibers

O. Frazão (1) , L.M.N. Amaral , J.L. Santos (1) , Philippe Roy (2) , Raphaël Jamier (2) , Sébastien Février (2)

1 INESC-ID - Instituto de Engenharia de Sistemas e Computadores Investigação e Desenvolvimento em Lisboa
2 PHOTONIQUE

In this work it is investigated the strain and temperature sensing characteristics of modal interferometers supported by two Bragg fibers with different cross-section cladding geometries. It is shown that the sensitivity to these measurands is different for the two fibers, which turns feasible the conception of several sensing configurations based on the combination of these two fiber types for simultaneous measurement of strain and temperature.

O. Frazão, L.M.N. Amaral, J.L. Santos, Philippe Roy, Raphaël Jamier, et al.. Simultaneous Measurement of Strain and Temperature using Modal Interferometry in Bragg Fibers. 2nd Workshop on Specialty Optical Fibers and Their Applications (WSOF-2), Oct 2010, Oaxaca, Mexico. pp.SPIE 7839, 783913 (2010), ⟨10.1117/12.867447⟩. ⟨hal-00622589⟩