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Fiber-Optic Michelson Interferometer with Faraday Mirrors for Acoustic Sensing using a 3 × 3 Coupler and Symmetric Demodulation Scheme

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dc.contributor.authorGartland, Peter Lanieren
dc.contributor.committeechairWang, Anboen
dc.contributor.committeememberZhu, Yizhengen
dc.contributor.committeememberSafaai-Jazi, Ahmaden
dc.contributor.departmentElectrical and Computer Engineeringen
dc.date.accessioned2016-11-03T08:00:34Zen
dc.date.available2016-11-03T08:00:34Zen
dc.date.issued2016-11-02en
dc.description.abstractFor the past 40 years, acoustic sensing has been a major avenue for the growth of interfero- metric fiber-optic sensors. Fiber-optic acoustic sensors have found uses in military, commer- cial, and medical applications. An interferometric fiber-optic acoustic sensor is presented utilizing the Michelson interferometer configuration with Faraday mirrors to eliminate po- larization fading. A 3 × 3 coupler is used as the beamsplitting component, and a symmetric demodulation algorithm is applied to recover the phase signal. This sensor has a theoretical resolution of 5.5 pico-strains and room to improve. Such improvements are discussed in the conclusion.en
dc.description.abstractgeneralFor the past 40 years, acoustic sensing has been a major avenue for the growth of fiber-optic sensors. The optical fiber itself acts essentially like a microphone that is sensitive to acoustic emissions in the audible range up into the ultrasonic range. Because of the fiber’s innate resistance to harsh environments, fiber-optic acoustic sensors have found uses in military, commercial, and, more recently, medical applications. The extremely high sensitivity achievable with a fiber-optic acoustic sensor is demonstrated using a simple arrangement of now readily available fiber-optic components and digital signal processing.en
dc.description.degreeMaster of Scienceen
dc.format.mediumETDen
dc.identifier.othervt_gsexam:9056en
dc.identifier.urihttp://hdl.handle.net/10919/73370en
dc.publisherVirginia Techen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectFiber Opticsen
dc.subjectMichelson Interferometeren
dc.subject3 x 3 Coupleren
dc.subjectAcoustic Sensingen
dc.titleFiber-Optic Michelson Interferometer with Faraday Mirrors for Acoustic Sensing using a 3 × 3 Coupler and Symmetric Demodulation Schemeen
dc.typeThesisen
thesis.degree.disciplineElectrical Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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