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dc.contributor.authorWang, Shaoquan
dc.contributor.authorLasn, Kaspar
dc.date.accessioned2021-10-22T08:56:33Z
dc.date.available2021-10-22T08:56:33Z
dc.date.created2021-04-07T16:24:34Z
dc.date.issued2021
dc.identifier.citationOptics Express. 2021, 29 (2), 1532-1544.en_US
dc.identifier.issn1094-4087
dc.identifier.urihttps://hdl.handle.net/11250/2824936
dc.description.abstractFiber optic sensors are increasingly used in several fast-growing industries. Aerospace, energy storage, and the medical sector consider new implementations of optical fibers mainly for condition monitoring purposes. Applications using optical fibers entail measurements of distributed strains and temperatures. However, the spectral shifts of transmitted and reflected light are simultaneously sensitive to both of these influences. This coupled sensitivity can introduce large errors for signal interpretation. An accurate calculation model for signal decoupling is necessary to distinguish pure mechanical strains from pure thermal loading. Approaches where the spectral shift is assumed to vary linearly with temperature give large errors when the temperature variation is high. This investigation derives and validates a new temperature formula that is used for high precision strain and temperature discrimination. The non-linear temperature formula is deduced from physics-based models and is validated with Rayleigh backscattering based OBR measurements. Our calculation approach demonstrates improved accuracy over an extended temperature range. The relationship between strain and temperature effects in the coupled mechanical and thermal loading environment is further studied in detail.en_US
dc.language.isoengen_US
dc.publisherOptical Society of Americaen_US
dc.titleAccurate non-linear calculation model for decoupling thermal and mechanical loading effects in the OBR measurementsen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionpublishedVersionen_US
dc.rights.holder© 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreementen_US
dc.source.pagenumber1532-1544en_US
dc.source.volume29en_US
dc.source.journalOptics Expressen_US
dc.source.issue2en_US
dc.identifier.doi10.1364/OE.410686
dc.identifier.cristin1902807
dc.relation.projectEU/826262en_US
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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