Iterative matrix inversion technique for simultaneous strain and temperature sensing in an extended temperature range

Barbara Hopf; Alexander W. Koch; Johannes Roths

doi:10.1117/12.2236852

30 May 2016 Iterative matrix inversion technique for simultaneous strain and temperature sensing in an extended temperature range

Barbara Hopf, Alexander W. Koch, Johannes Roths

Author Affiliations +

Proceedings Volume 9916, Sixth European Workshop on Optical Fibre Sensors; 99160O (2016) https://doi.org/10.1117/12.2236852
Event: Sixth European Workshop on Optical Fibre Sensors (EWOFS'2016), 2016, Limerick, Ireland

Abstract

The linear matrix approach is the common method for multi-parameter FBG-based strain and temperature sensing. As it does not include non-linear temperature responses and hence lacks accuracy, the application of an iterative matrix inversion technique can be used to remedy this deficiency. Employing this method in a set-up using a multi-parameter sensor system that consists of two FBGs in fibers, which differ in cladding diameters, significantly reduced temperature uncertainties of ± 1°C could be achieved within a temperature range between -20°C and 150°C.

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Barbara Hopf, Alexander W. Koch, and Johannes Roths "Iterative matrix inversion technique for simultaneous strain and temperature sensing in an extended temperature range", Proc. SPIE 9916, Sixth European Workshop on Optical Fibre Sensors, 99160O (30 May 2016); https://doi.org/10.1117/12.2236852

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