Simultaneous measurement of temperature and strain using a step spectrum profile fibre Bragg grating arrangement

Orlando Frazao; R. Romero; Francisco M. Araujo; Luis Alberto Ferreira; Jose Luis Santos

doi:10.1117/12.566546

9 June 2004 Simultaneous measurement of temperature and strain using a step spectrum profile fibre Bragg grating arrangement

Orlando Frazao, R. Romero, Francisco M. Araujo, Luis Alberto Ferreira, Jose Luis Santos

Author Affiliations +

Proceedings Volume 5502, Second European Workshop on Optical Fibre Sensors; (2004) https://doi.org/10.1117/12.566546
Event: Second European Workshop on Optical Fibre Sensors, 2004, Santander, Spain

Abstract

A sensing head for simultaneous measurement of temperature and strain is presented and analyzed. The proposed configuration is based on the combination of two Bragg gratings, written in different fibers and with different reflectivities, to form a single signature with a reflected step spectrum profile. By measuring the changes in the peak wavelength and spectral width of this signature, resolutions of 0.65°C/√Hz and ±2.55 με/√Hz were achieved for temperature and strain measurements, respectively.

Citation Download Citation

Orlando Frazao, R. Romero, Francisco M. Araujo, Luis Alberto Ferreira, and Jose Luis Santos "Simultaneous measurement of temperature and strain using a step spectrum profile fibre Bragg grating arrangement", Proc. SPIE 5502, Second European Workshop on Optical Fibre Sensors, (9 June 2004); https://doi.org/10.1117/12.566546

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