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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, Porto.

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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.

Item type: Conference or Workshop Item (Paper)
ID code: 30203
Notes: Fourth European Workshop on Optical Fibre Sensors, Porto, PORTUGAL, SEP 08-10, 2010
Keywords: optical fibre sensor, doped fibre , two-photon excitation, fluorescence, temperature, distributed sensing, Physics
Subjects: Science > Physics
Department: Faculty of Science > Physics
Related URLs:
Depositing user: Pure Administrator
Date Deposited: 11 Apr 2011 12:14
Last modified: 27 Mar 2014 11:36
URI: http://strathprints.strath.ac.uk/id/eprint/30203

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