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 µɛ/√Hz, respectively.
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Rego et al. (2005) studied this question.
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