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Proceedings Paper

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

Paper Details

Date Published: 30 May 2016
PDF: 4 pages
Proc. SPIE 9916, Sixth European Workshop on Optical Fibre Sensors, 99160O (30 May 2016); doi: 10.1117/12.2236852
Show Author Affiliations
Barbara Hopf, Munich Univ. of Applied Sciences (Germany)
Alexander W. Koch, Technical Univ. of Munich (Germany)
Johannes Roths, Munich Univ. of Applied Sciences (Germany)

Published in SPIE Proceedings Vol. 9916:
Sixth European Workshop on Optical Fibre Sensors
Elfed Lewis, Editor(s)

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