2 June 2014 A fast high-spatial-resolution Raman distributed temperature sensor
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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.
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Y. Chen, A. H. Hartog, R. J. Marsh, I. M. Hilton, M. R. Hadley, 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); doi: 10.1117/12.2058109; https://doi.org/10.1117/12.2058109
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