Short-range non-bending fully distributed water/humidity sensors

Simple item page
dc.contributor.authorChen, G.Y.
dc.contributor.authorWu, X.
dc.contributor.authorSchartner, E.P.
dc.contributor.authorShahnia, S.
dc.contributor.authorHebert, N.B.
dc.contributor.authorYu, L.
dc.contributor.authorLiu, X.
dc.contributor.authorShahraam, A.V.
dc.contributor.authorNewson, T.P.
dc.contributor.authorEbendorff-Heidepriem, H.
dc.contributor.authorXu, H.
dc.contributor.authorLancaster, D.G.
dc.contributor.authorMonro, T.M.
dc.date.issued2019
dc.description.abstractExisting sensing technologies lack the ability to spatially resolve multiple sources of water or humidity without relying on the deployment of numerous inline sensors. A fully distributed approach has the potential to unlock a diverse range of applications, such as humidity mapping and liquid-depth measurements. We have explored a new direction toward what is, to the best of our knowledge, the first non-bending fully distributed water/humidity sensors. This new class of sensors was made possible from the first combination of small-core exposed-core fiber, a hydrophilic polyelectrolyte multilayer coating, and coherent optical frequency-domain reflectometry. Their non-bending nature enables deployment in a wider range of environments compared to the bending type based on water-induced fiber bending. The sensing mechanism involves monitoring back-reflected optical signals created by changes in the local reflectivity due to water-induced reduction in the local refractive-index of the coating. The demonstrated average sensitivity of the sensing fiber with 10.0 bilayer polyelectrolyte multilayer coating to relative humidity varies from 0.060 to 0.001/%RH (0-38 cm distance) within a dynamic range of 26-95%RH. The distance-dependent detection limit varies between 0.3-10.0%RH (0-38 cm distance), and the spatial resolution of 4.6 mm is the smallest demonstrated for exposed-core fibers and can be vastly improved by simply broadening the swept range. The response time is 4-6 s, and the recovery time is 3-5 s. The sensing range (i.e., distance) is -0.5 m, which is more suitable for water-depth monitoring.
dc.description.statementofresponsibilityGeorge Y. Chen, Xuan Wu, Erik P. Schartner, Soroush Shahnia, Nicolas Bourbeau Hébert, Li Yu, Xiaokong Liu, Shahraam Afshar V., Trevor P. Newson, Heike Ebendorff-Heidepriem, Haolan Xu, David G. Lancaster, and Tanya M. Monro
dc.identifier.citationJournal of Lightwave Technology, 2019; 37(9):2014-2022
dc.identifier.doi10.1109/JLT.2019.2897346
dc.identifier.issn0733-8724
dc.identifier.issn1558-2213
dc.identifier.orcidSchartner, E.P. [0000-0003-1669-4302]
dc.identifier.orcidHebert, N.B. [0000-0002-6168-8510]
dc.identifier.orcidEbendorff-Heidepriem, H. [0000-0002-4877-7770]
dc.identifier.urihttp://hdl.handle.net/2440/119492
dc.language.isoEN
dc.publisherIEEE
dc.relation.granthttp://purl.org/au-research/grants/arc/CE140100003
dc.relation.granthttp://purl.org/au-research/grants/arc/LP150100657
dc.rights© 2019 IEEE. Translations and content mining are permitted for academic research only. Personal use is also permitted, but republication/redistribution requires IEEE permission. See http://www.ieee.org/publications standards/publications/rights/index.html for more information.
dc.source.urihttps://doi.org/10.1109/jlt.2019.2897346
dc.subjectDistributed; exposed core; frequency; humidity; hygrometer; OFDR; optical fiber; polyelectrolyte coating; reflectometry; sensor; water
dc.titleShort-range non-bending fully distributed water/humidity sensors
dc.typeJournal article
pubs.publication-statusPublished

Files

Collections

IPAS publications