Picture of Open Access badges

Discover Open Access research at Strathprints

It's International Open Access Week, 24-30 October 2016. This year's theme is "Open in Action" and is all about taking meaningful steps towards opening up research and scholarship. The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs. Explore recent world leading Open Access research content by University of Strathclyde researchers and see how Strathclyde researchers are committing to putting "Open in Action".


Image: h_pampel, CC-BY

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

Full text not available in this repository. (Request a copy from the Strathclyde author)


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.