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Advances in high resolution distributed temperature sensing using the time-correlated single photon counting technique

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4 Author(s)
Feced, R. ; Dept. of Electron. & Electr. Eng., King''s Coll., London, UK ; Farhadiroushan, M. ; Handerek, V.A. ; Rogers, A.J.

A very high spatial resolution distributed optical fibre temperature sensor system is demonstrated using Raman scattering and time-correlated single photon counting. The spatial resolution of the system is 3.5 cm. A temperature resolution of 2°C has been achieved with 1 minute measurement time when averaging the data points over 10 cm. The system shows the feasibility of the time-correlated single photon counting technique for distributed sensing measurements, offering a practical solution for applications where very high spatial resolution is needed

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Optoelectronics, IEE Proceedings -  (Volume:144 ,  Issue: 3 )