A fast high-spatial-resolution Raman distributed temperature sensor

Y. Chen; A. H. Hartog; R. J. Marsh; I. M. Hilton; M. R. Hadley; P. A. Ross

doi:10.1117/12.2058109

2 June 2014 A fast high-spatial-resolution Raman distributed temperature sensor

Y. Chen, A. H. Hartog, R. J. Marsh, I. M. Hilton, M. R. Hadley, P. A. Ross

Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 91575M (2014) https://doi.org/10.1117/12.2058109
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain

Abstract

Conventional high-spatial-resolution Raman distributed temperature sensing (DTS) systems are based on photoncounting techniques, which result in slow measurements over short sensing fibers. We describe an alternative approach that uses a high-power, short-pulse-width laser and provides fast measurements over fibers longer than 1 km. We demonstrate measurements with 1-s update times over fiber lengths greater than 1 km with better than 0.4-m spatial resolution. We introduce a figure of merit for DTS and we show a substantial improvement (x 100) over earlier results.

Citation Download Citation

Y. Chen, A. H. Hartog, R. J. Marsh, I. M. Hilton, M. R. Hadley, and P. A. Ross "A fast high-spatial-resolution Raman distributed temperature sensor", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91575M (2 June 2014); https://doi.org/10.1117/12.2058109

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