Title :
Simultaneous measurement of temperature and strain based on arc-induced long-period fibre gratings
Author :
Rego, G. ; Marques, P. V S ; Salgado, H.M. ; Santos, J.L.
Author_Institution :
Unidade de Optoelectronica e Sistemas Electronicos, INESC, Porto, Portugal
Abstract :
A study on arc-induced long-period fibre gratings (LPFGs) revealed that their strain sensitivity depends on the electric current of the arc discharge. Based on that property, a sensor scheme comprising two concatenated LPFGs was implemented for discrimination of temperature and strain effects. This sensor presented resolutions of ±0.1°C/√Hz and ±35 με/√Hz, respectively.
Keywords :
Bragg gratings; arcs (electric); fibre optic sensors; strain measurement; strain sensors; temperature measurement; temperature sensors; arc discharge; arc-induced long-period fibre gratings; electric current; sensor scheme; strain effects; temperature effects;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20057292
