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Iterative matrix algorithm for high precision temperature and force decoupling in multiparameter FBG sensing

  • A new iterative matrix algorithm has been applied to improve the precision of temperature and force decoupling in multi-parameter FBG sensing. For the first time, this evaluation technique allows the integration of nonlinearities in the sensor’s temperature characteristic and the temperature dependence of the sensor’s force sensitivity. Applied to a sensor cable consisting of two FBGs in fibers with 80 μm and 125 μm cladding diameter installed in a 7 m-long coiled PEEK capillary, this technique significantly reduced the uncertainties in friction-compensated temperature measurements. In the presence of high friction-induced forces of up to 1.6 N the uncertainties in temperature evaluation were reduced from several degrees Celsius if using a standard linear matrix approach to less than 0.5°C if using the iterative matrix approach in an extended temperature range between −35°C and 125°C.

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Metadaten
Author:Barbara Hopf, Franz J. Dutz, Thomas Bosselmann, Michael Willsch, Alexander W. Koch, Johannes Roths
URN:urn:nbn:de:bvb:m347-opus-3345
DOI:https://doi.org/10.1364/OE.26.012092
Parent Title (English):Optics Express
Document Type:Article
Language:English
Date of Publication (online):2022/02/01
Year of first Publication:2018
Publishing Institution:Hochschule für angewandte Wissenschaften München
Release Date:2022/02/01
GND Keyword:Bragg-ReflektorGND; PhotonikGND
Volume:26
Issue:9
Article Number:321223
Page Number:14
First Page:12092
Last Page:12105
Note:
Sonderdruck aus: Optics Express; Volume 26, No. 9 (2018), S. 12092-12105
Departments and Institutes:Fakultäten der Hochschule München / FK 06 Fakultät für angewandte Naturwissenschaften und Mechatronik
Dewey Decimal Classification:6 Technik, Medizin, angewandte Wissenschaften / 60 Technik
Illustrations:Illustration/en
Illustrations:grafische Darstellung/en
Licence (German):Keine CC-Lizenz, es gilt der Veröffentlichungsvertrag und das Deutsche Urheberrecht
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