Extrinsic Fabry-Perot interferometer for surface acoustic wave measurement

Simple item page
dc.contributor.authorTran, Tuan A.en
dc.contributor.departmentElectrical Engineeringen
dc.date.accessioned2014-03-14T21:48:12Zen
dc.date.adate2009-10-24en
dc.date.available2014-03-14T21:48:12Zen
dc.date.issued1991en
dc.date.rdate2009-10-24en
dc.date.sdate2009-10-24en
dc.description.abstractA surface acoustic wave sensor based on an extrinsic Fabry-Perot interferometer is described. A single-mode fiber, used as the input/output fiber, and a multimode fiber, used mainly as a reflector, form an air-gap that acts as a low-finesse Fabry-Perot cavity. The Fresnel reference reflection from the glass/air interface at the front of the air-gap interferes with the sensing reflection from the air/glass interface at the far end of the air-gap in the input/output fiber. Strains in the silica tube housing the two fibers change the air-gap length, thereby altering the phase difference between the reference and sensing reflections and modulating the output intensity. A theoretical analysis of the interaction between the strain induced by the acoustic fields and the fiber sensor is presented. Because signal drifting in interferometric sensors is common, a dual optical wavelength stabilization technique is also incorporated into the sensor to minimize the effect. Signal to noise ratios (SNR’s) on the order of 39 dB are obtained with a strain sensitivity of 4°/ μstrain cm⁻¹.en
dc.description.degreeMaster of Scienceen
dc.format.extentviii, 76 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-10242009-020318en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-10242009-020318/en
dc.identifier.urihttp://hdl.handle.net/10919/45312en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1991.T736.pdfen
dc.relation.isformatofOCLC# 24111948en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1991.T736en
dc.subject.lcshFabry-Perot interferometersen
dc.subject.lcshInterferometers -- Researchen
dc.titleExtrinsic Fabry-Perot interferometer for surface acoustic wave measurementen
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineElectrical Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
LD5655.V855_1991.T736.pdf
Size:
2.63 MB
Format:
Adobe Portable Document Format
Description:
Download

Collections

Masters Theses