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Diode-pumped Landau-Placzek based distributed temperature sensor utilising an all-fibre Mach-Zehnder interferometer

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4 Author(s)
K. De Souza ; Optoelectron. Res. Centre, Southampton Univ., UK ; G. P. Lees ; P. C. Wait ; T. P. Newson

A Mach-Zehnder interferometer has been used for the first time in the detection system of a distributed temperature sensor, based on the Landau-Placzek ratio method. The interferometer separates the back-scattered Rayleigh and Brillouin signals with very low losses. Used together with a novel diode-pumped Q-switched fibre laser source, performance has been improved at a substantial cost saving over previously reported work

Published in:

Electronics Letters  (Volume:32 ,  Issue: 23 )