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Fabrication and characterization of calcium aluminate glass fibers

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Title
Fabrication and characterization of calcium aluminate glass fibers
Name (ID = NAME001); (type = personal)
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Foy
NamePart (type = given)
Paul R.
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Paul R. Foy
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author
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Sigel
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George
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Advisory Committee
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George H. Sigel
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chair
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NamePart (type = family)
McCauley
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Ronald
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Advisory Committee
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Ronald A. McCauley
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internal member
Name (ID = NAME004); (type = personal)
NamePart (type = family)
Lehman
NamePart (type = given)
Richard
Affiliation
Advisory Committee
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Richard L. Lehman
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internal member
Name (ID = NAME005); (type = personal)
NamePart (type = family)
Ballato
NamePart (type = given)
John
Affiliation
Advisory Committee
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John Ballato
Role
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outside member
Name (ID = NAME006); (type = corporate)
NamePart
Rutgers University
Role
RoleTerm (authority = RULIB)
degree grantor
Name (ID = NAME007); (type = corporate)
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Graduate School - New Brunswick
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school
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Text
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theses
OriginInfo
DateCreated (qualifier = exact)
2008
DateOther (qualifier = exact); (type = degree)
2008-10
Language
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English
PhysicalDescription
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electronic
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application/pdf
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text/xml
Extent
xiv, 166 pages
Abstract
Calcium aluminate glasses (CAG) offer excellent chemical durability, high strength, broad spectral transparency, and a refractory nature. This makes them ideal candidates for fiber optic power delivery and sensor systems in the infrared spectrum. CAG also have the potential to form ultra-low loss optical materials.
The fabrication of glass optical fibers from CAG was investigated in this study. High quality bulk glasses were obtained from the best industrial sources available. These glasses included silica and baria doped CAG compositions. A preform fabrication method was developed to obtain drawing samples. An optical fiber draw furnace was specially modified to achieve fiber drawing. A novel drawing method was also developed.
Solid and hollow CAG waveguides, and CAG core/silica clad waveguides were obtained from drawing preforms. This represents the first successful fiber drawing of this glass system. Teflon coating for optical cladding and strength protection was also investigated.
Infrared Spectroscopy was used to assess the attenuation in the drawn fibers. 7 dB/m at 2.7 microns with the baria doped CAG solid waveguide was recorded. This represents the lowest loss documented for fibers fabricated from CAG.
Laser power propagation through solid and hollow waveguides was investigated. 24 Watts of CO2 laser power was delivered into a hollow baria doped CAG waveguide. 10.13 J/mm2 of 2.94 microns Erbium YAG laser power was delivered through solid baria doped CAG waveguide.
Fiber strength testing was performed on the CAG fibers through four point bend testing. The best strength obtained was 1290 MPa for baria doped CAG.
Glass stability was assessed using Differential Thermal Analysis. Fiber surface crystallization products were characterized using Energy Dispersive Analysis, Scanning Electron Microscopy, a specially modified Hot Stage X-Ray, and Guinier Camera X-Ray Analysis. The surface crystallization analysis revealed the formation of Ca3Al2O6 in the silica doped CAG fibers and Ca3Al2O6 and Ba4Al2O7 in the baria doped CAG fibers.
Reactive atmosphere processing using propane and NF3 was investigated for reducing the surface crystallization during drawing.
Note (type = degree)
Ph.D.
Note (type = bibliography)
Includes bibliographical references (p. 155-163).
Subject (ID = SUBJ1); (authority = RUETD)
Topic
Ceramic and Materials Science and Engineering
Subject (ID = SUBJ2); (authority = ETD-LCSH)
Topic
Calcium aluminate
Subject (ID = SUBJ3); (authority = ETD-LCSH)
Topic
Optical glass
Subject (ID = SUBJ4); (authority = ETD-LCSH)
Topic
Optical fibers
Subject (ID = SUBJ5); (authority = ETD-LCSH)
Topic
Fiber optics--Materials
RelatedItem (type = host)
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Title
Graduate School - New Brunswick Electronic Theses and Dissertations
Identifier (type = local)
rucore19991600001
Identifier (type = hdl)
http://hdl.rutgers.edu/1782.2/rucore10001600001.ETD.17472
Identifier
ETD_1284
Location
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NjNbRU
Identifier (type = doi)
doi:10.7282/T3QF8T6R
Genre (authority = ExL-Esploro)
ETD doctoral
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The author owns the copyright to this work.
Copyright
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Open
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Name
Paul Foy
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Copyright holder
Affiliation
Rutgers University. Graduate School - New Brunswick
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Non-exclusive ETD license
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Author Agreement License
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I hereby grant to the Rutgers University Libraries and to my school the non-exclusive right to archive, reproduce and distribute my thesis or dissertation, in whole or in part, and/or my abstract, in whole or in part, in and from an electronic format, subject to the release date subsequently stipulated in this submittal form and approved by my school. I represent and stipulate that the thesis or dissertation and its abstract are my original work, that they do not infringe or violate any rights of others, and that I make these grants as the sole owner of the rights to my thesis or dissertation and its abstract. I represent that I have obtained written permissions, when necessary, from the owner(s) of each third party copyrighted matter to be included in my thesis or dissertation and will supply copies of such upon request by my school. I acknowledge that RU ETD and my school will not distribute my thesis or dissertation or its abstract if, in their reasonable judgment, they believe all such rights have not been secured. I acknowledge that I retain ownership rights to the copyright of my work. I also retain the right to use all or part of this thesis or dissertation in future works, such as articles or books.
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