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Distributed crystal fiber sensing for extreme environments

Dalzell, Craig J. and Han, Thomas P. J. and Ruddock, Ivan S. (2012) Distributed crystal fiber sensing for extreme environments. IEEE Sensors Journal, 12 (1). pp. 164-167. ISSN 1530-437X

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Abstract

Distributed sensing of temperature can be achieved by using time-correlated two-photon excited fluorescence (TPF). To assess the extension of this technique to single-crystal fibers for high-temperature applications, various aspects are considered including the two-photon absorption cross-section (delta), dopant density, and the geometry of single crystal fibers. By comparing the fluorescence yield for two-photon excitation with that for single-photon excitation of the same transition, delta for ruby was measured over the 0.8-1.2 mu m range with maximum room temperature values of 5.9 x 10(-3) GM for e-polarization and 4.6 x 10(-3) GM for o-polarization at 840 nm. It is shown that values of this magnitude are adequate for a practical TPF-based crystal fiber sensor to be realized.

Item type: Article
ID code: 37144
Keywords: distributed sensing, doped fiber, fluorescence, optical fiber sensors, ruby, temperature, two-photon excitation, optical fiber, lasers, Solid state physics. Nanoscience, Instrumentation, Electrical and Electronic Engineering
Subjects: Science > Physics > Solid state physics. Nanoscience
Department: Faculty of Science > Physics
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Depositing user: Pure Administrator
Date Deposited: 27 Jan 2012 13:38
Last modified: 27 Mar 2014 09:56
URI: http://strathprints.strath.ac.uk/id/eprint/37144

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