Development of a Miniature, Semi-Distributed Sapphire Fiber Optic Thermometer for Harsh and High Temperature Environments

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dc.contributor.authorDePew, Keith Alanen
dc.contributor.committeechairWang, Anboen
dc.contributor.committeememberXu, Yongen
dc.contributor.committeememberMeehan, Kathleenen
dc.contributor.departmentElectrical and Computer Engineeringen
dc.date.accessioned2013-02-19T22:38:51Zen
dc.date.available2013-02-19T22:38:51Zen
dc.date.issued2013-01-22en
dc.description.abstractFiber optic temperature sensing has become a well-defined field in the past few decades [1] through the use of Fiber Bragg Gratings, Fabry-Perot interferometry, and pyrometry, to list several techniques in use today.  The use of fiber optics offers significant advantages over electronic sensing in terms of size and insensitivity to harsh conditions such as extreme temperatures and corrosive environments.  The availability of optical sapphire materials, including fibers, has allowed the creation of fiber optic sensing elements able to continuously operate at temperatures of 1600"C [2] or more, thus outstripping the abilities of many commonly used thermocouples (excluding platinum types R, S, and B) [3] which will also exhibit a sensitivity to electromagnetic fields. In addition to the aforementioned benefits, fiber optic sensing techniques provide a great deal of accuracy in temperature measurement over the entire working range of the sensor. The work documented in this thesis consists of efforts to minimize the overall footprint of a sapphire based extrinsic Fabry-Perot interferometry (EFPI) temperature sensing element, as well as strides made in multiplexing the same element and reducing the error potential from cross sensitivity of the thermometer with applied strain.  This work has been variously funded by Pratt & Whitney and the Department of Energy.en
dc.description.degreeMaster of Scienceen
dc.format.mediumETDen
dc.identifier.othervt_gsexam:199en
dc.identifier.urihttp://hdl.handle.net/10919/19224en
dc.publisherVirginia Techen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectThermometeren
dc.subjecthigh temperatureen
dc.subjectdistributeden
dc.subjectharsh environmenten
dc.subjectsapphireen
dc.subjectFabry-Peroten
dc.subjectinterferometeren
dc.subjectnano-fabricationen
dc.titleDevelopment of a Miniature, Semi-Distributed Sapphire Fiber Optic Thermometer for Harsh and High Temperature Environmentsen
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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