Distributed Pressure Sensing Using an Embedded-Core Capillary Fiber and Optical Frequency Domain Reflectometry

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dc.contributor.authorGerosa R.M.
dc.contributor.authorOsorio J.H.
dc.contributor.authorLopez-Cortes D.
dc.contributor.authorCordeiro C.M.B.
dc.contributor.authorDe Matos C.J.S.
dc.date.accessioned2024-03-12T19:23:42Z
dc.date.available2024-03-12T19:23:42Z
dc.date.issued2021
dc.description.abstract© 2001-2012 IEEE.In this paper, we describe a distributed pressure sensor using a simplified and high sensitive microstructured optical fiber - the embedded-core fiber - and autocorrelation analysis of the data obtained from an optical frequency domain reflectometer (OFDR). The special fiber consists of a microcapillary, which has a germanium-doped core placed within the capillary wall. When this structure is subjected to pressure variations, an asymmetric stress distribution is induced within the fiber, entailing birefringence variations. Here, we show that the use of a commercial OFDR with submillimeter resolution together with an autocorrelation data analysis routine in the spectral domain allows mapping the fiber birefringence and performing distributed pressure sensing. In the experiments, the fiber passed through two pressure chambers, which allowed for pressure to be locally and independently applied. No cross-sensitivity between the pressure points was observed. The embedded-core fiber exhibited a birefringence sensitivity to pressure of 3.8× 10-7 bar-1, which is 21% higher than that measured in commercial photonic crystal fibers using the same setup.
dc.description.firstpage360
dc.description.issuenumber1
dc.description.lastpage365
dc.description.volume21
dc.identifier.doi10.1109/JSEN.2020.3013983
dc.identifier.issn1558-1748
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/34835
dc.relation.ispartofIEEE Sensors Journal
dc.rightsAcesso Restrito
dc.subject.otherlanguageDistributed pressure sensor
dc.subject.otherlanguagefiber sensor
dc.subject.otherlanguagemicrostructure fiber
dc.subject.otherlanguageOFDR
dc.titleDistributed Pressure Sensing Using an Embedded-Core Capillary Fiber and Optical Frequency Domain Reflectometry
dc.typeArtigo
local.scopus.citations7
local.scopus.eid2-s2.0-85097718794
local.scopus.subjectAutocorrelation analysis
local.scopus.subjectFiber birefringence
local.scopus.subjectMicro-capillaries
local.scopus.subjectMicro-structured optical fibers
local.scopus.subjectOptical frequency domain reflectometers
local.scopus.subjectOptical frequency domain reflectometry
local.scopus.subjectPressure variations
local.scopus.subjectSub-millimeter resolutions
local.scopus.updated2024-05-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85097718794&origin=inward
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