MilliKelvin resolution in cryogenic temperature distributed fibre sensing based on coherent Rayleigh scattering

The response of a distributed temperature sensor based on coherent Rayleigh scattering is experimentally studied in the temperature range from 77 K up to 300 K, using fibres with standard and ORMOCER coating. A precise and absolute frequency scan is performed to obtain the best temperature resolution that turns out to be in the mK range. Experimental results point out that heating and cooling processes, at cryogenic temperatures, exhibit different temperature sensitivities when standard single-mode fibres are used; however, specially coated fibres exhibit better repeatability.


Editor(s):
Lopezhiguera, Jm
Jones, J
Lopezamo, M
Santos, Jl
Published in:
Proceedings of SPIE, 9157, 91573R
Presented at:
23rd International Conference on Optical Fibre Sensors, Santander, Spain, June 2-6, 2014
Year:
2014
Publisher:
SPIE
ISBN:
978-1-62841-175-1
Keywords:
Laboratories:




 Record created 2014-06-10, last modified 2018-09-13

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