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Proceedings Paper

Simultaneous measurement of strain and temperature based on polarization loss properties of arc-induced long-period gratings
Author(s): Orlando Frazao; Gasper M. Rego; Francisco M. Araujo; Luis Alberto Ferreira; Henrique M. Salgado; Jose Luis Santos
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Paper Abstract

A new sensing configuration is proposed for simultaneous measurement of strain and temperature that relies on a single long period grating written by the electric arc technique. The underlying principle is the azimuthal asymmetry induced by the electric arc fabrication technique, which results in a device with polarization dependent insertion loss sensitive to both temperature and strain. With the proposed configuration, resolutions of ±2.8°C/√Hz and ±13.9με/√Hz are obtained for temperature and strain measurements, respectively.

Paper Details

Date Published: 9 June 2004
PDF: 4 pages
Proc. SPIE 5502, Second European Workshop on Optical Fibre Sensors, (9 June 2004); doi: 10.1117/12.566629
Show Author Affiliations
Orlando Frazao, INESC (Portugal)
Gasper M. Rego, INESC (Portugal)
Univ. do Porto (Portugal)
Instituto Politécnico de Viana de Castelo (Portugal)
Francisco M. Araujo, INESC (Portugal)
Luis Alberto Ferreira, INESC (Portugal)
Henrique M. Salgado, INESC (Portugal)
Univ. do Porto (Portugal)
Jose Luis Santos, INESC (Portugal)
Univ. do Porto (Portugal)


Published in SPIE Proceedings Vol. 5502:
Second European Workshop on Optical Fibre Sensors
Jose Miguel Lopez-Higuera; Brian Culshaw, Editor(s)

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