Picture of a sphere with binary code

Making Strathclyde research discoverable to the world...

The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs. It exposes Strathclyde's world leading Open Access research to many of the world's leading resource discovery tools, and from there onto the screens of researchers around the world.

Explore Strathclyde Open Access research content

Distributed optical fibre sensing of temperature using time-correlated two-photon excited fluorescence

Dalzell, Craig J. and Han, Thomas P. J. and Ruddock, Ivan S. (2010) Distributed optical fibre sensing of temperature using time-correlated two-photon excited fluorescence. In: Fourth European Workshop on Optical Fibre Sensors, 2010-09-08 - 2010-09-10.

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

Abstract

Distributed temperature sensing based on time-correlated two-photon excited fluorescence (TPF) in doped optical fibre is described. Counter-propagating laser pulses generate a TPF flash at the position of their overlap which is scanned along the fibre by a variable relative time delay. The flash is transmitted to one end where it is detected and analysed to yield the temperature from its thermal dependence. With the fluorescence power being completely independent of excitation pulse duration and temporal profile, the sensor does not require ultrashort excitation pulses for operation. There is potential for high spatial resolution as the length of the sensed region depends only on pulse duration. Preliminary results are presented for praseodymium doped single-mode fibre.