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Proceedings Paper

Improvement of light confinement in nanostructured sapphire optical fibers
Author(s): Hui Chen; Zsolt L. Poole; Paul Ohodnicki; Henry Du
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Paper Abstract

An improvement in light confinement in sapphire fiber is obtained by employing nanoporous alumina as a cladding. The fabrication strategy entails freeze-coating metal Al on sapphire fiber and its subsequent anodization to form alumina cladding with highly organized nanopore channels vertically aligned to the fiber axis with dimensions of ~20 nm. We investigated the confinement dependence on the porosity of the cladding, showing an improvement in comparison to unclad sapphire fibers. The versatility of anodized alumina cladding with tunable structural and optical characteristics has the potential to enable a new class of specialty sapphire optical fibers by engineering the light propagation for new sensor development.

Paper Details

Date Published: 27 April 2017
PDF: 5 pages
Proc. SPIE 10208, Fiber Optic Sensors and Applications XIV, 102080A (27 April 2017); doi: 10.1117/12.2262663
Show Author Affiliations
Hui Chen, Stevens Institute of Technology (United States)
Zsolt L. Poole, National Energy Technology Lab. (United States)
Paul Ohodnicki, National Energy Technology Lab. (United States)
Carnegie Mellon Univ. (United States)
Henry Du, Stevens Institute of Technology (United States)


Published in SPIE Proceedings Vol. 10208:
Fiber Optic Sensors and Applications XIV
Christopher S. Baldwin; Gary Pickrell; Henry H. Du, Editor(s)

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