Quasi-static strain sensing using molecular spectroscopy

dc.contributor.authorLam, Timothy
dc.contributor.authorChow, Jong
dc.contributor.authorShaddock, Daniel
dc.contributor.authorLittler, Ian C M
dc.contributor.authorGagliardi, Gianluca
dc.contributor.authorGray, Malcolm B
dc.contributor.authorMcClelland, David
dc.coverage.spatialOttawa Canada
dc.date.accessioned2015-12-08T22:24:41Z
dc.date.available2015-12-08T22:24:41Z
dc.date.createdMay 15-19 2011
dc.date.issued2011
dc.date.updated2016-02-24T09:46:34Z
dc.description.abstractSteady developments in cost and reliability in fiber optic sensors have seen an increase of their deployment in numerous monitoring and detection applications. In high-end applications, greater resolution is required, especially in systems where the environment is quiet, but the signal is weak. In order to meet these requirements the most dominant noise source, laser frequency noise, must be reduced. In this paper we present a quasi-static strain sensing referenced to a molecular frequency reference. A DFB CW diode laser is locked to a fiber Fabry-Perot sensor, transferring the detected signals onto the laser frequency and suppressing laser frequency noise. The laser frequency is then read off using an H13C14N absorption line. Phase modulation spectroscopy is used to both lock the laser to the sensor and read off the signals detected by the sensor. The technique is capable of resolving signals below 1 nanostrain from 20 mHz, reaching a white noise floor of 10 picostrain at several Hz.
dc.identifier.isbn9780819482464
dc.identifier.urihttp://hdl.handle.net/1885/33117
dc.publisherConference Organising Committee
dc.relation.ispartofseriesInternational Conference on Optical Fiber Sensors 2011
dc.sourceProceedings of SPIE - The International Society for Optical Engineering
dc.source.urihttp://www.scopus.com/inward/record.url?eid=2-s2.0-79957992793&partnerID=40&md5=bf79b0278dd4d16e485ef3e64b29b44c
dc.subjectKeywords: Absorption lines; Diode lasers; Fiber Fabry-Perot sensor; Frequency reference; Laser frequency; Laser locking; Nanostrain; Noise source; Phase-modulation spectroscopy; Picostrain; Quasi-static; Quasi-static strains; Strain sensing; Fibers; Molecular spect laser locking; quasi-static; Strain sensing
dc.titleQuasi-static strain sensing using molecular spectroscopy
dc.typeConference paper
local.bibliographicCitation.lastpage4
local.bibliographicCitation.startpage1
local.contributor.affiliationLam, Timothy, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationChow, Jong , College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationShaddock, Daniel, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationLittler, Ian C M, National Measurement Institute
local.contributor.affiliationGagliardi, Gianluca, Istituto Nazionale di Ottica (INO)
local.contributor.affiliationGray, Malcolm B, National Measurement Institute
local.contributor.affiliationMcClelland, David, College of Physical and Mathematical Sciences, ANU
local.contributor.authoremailu4113914@anu.edu.au
local.contributor.authoruidLam, Timothy, u4113914
local.contributor.authoruidChow, Jong , u3937721
local.contributor.authoruidShaddock, Daniel, u9701638
local.contributor.authoruidMcClelland, David, u8802403
local.description.notesImported from ARIES
local.description.refereedYes
local.identifier.absfor020502 - Lasers and Quantum Electronics
local.identifier.absseo970102 - Expanding Knowledge in the Physical Sciences
local.identifier.ariespublicationf5625xPUB99
local.identifier.doi10.1117/12.884639
local.identifier.scopusID2-s2.0-79957992793
local.identifier.thomsonID000293567800090
local.identifier.uidSubmittedByf5625
local.type.statusPublished Version

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