30 May 2016 Iterative matrix inversion technique for simultaneous strain and temperature sensing in an extended temperature range
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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, 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); doi: 10.1117/12.2236852; https://doi.org/10.1117/12.2236852
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