Print Email Facebook Twitter Double-ended calibration of fiber-optic Raman spectra distributed temperature sensing data Title Double-ended calibration of fiber-optic Raman spectra distributed temperature sensing data Author Van de Giesen, N.C. Steele-Dunn, S.C. Jansen, J. Hoes, O.A.C. Hausner, M.B. Tyler, S. Selker, J. Faculty Civil Engineering and Geosciences Department Water Management Date 2012-04-27 Abstract Over the past five years, Distributed Temperature Sensing (DTS) along fiber optic cables using Raman backscattering has become an important tool in the environmental sciences. Many environmental applications of DTS demand very accurate temperature measurements, with typical RMSE < 0.1 K. The aim of this paper is to describe and clarify the advantages and disadvantages of double-ended calibration to achieve such accuracy under field conditions. By measuring backscatter from both ends of the fiber optic cable, one can redress the effects of differential attenuation, as caused by bends, splices, and connectors. The methodological principles behind the double-ended calibration are presented, together with a set of practical considerations for field deployment. The results from a field experiment are presented, which show that with double-ended calibration good accuracies can be attained in the field. Subject Distributed Temperature Sensing (DTS)calibrationenvironmental monitoringhydrology To reference this document use: http://resolver.tudelft.nl/uuid:91c9a47b-466b-495e-b3ea-deb0398ef983 DOI https://doi.org/10.3390/s120505471 Publisher MDPI ISSN 1424-8220 Source http://www.mdpi.com/journal/sensors Source Sensors, 12 (5), 2012 Part of collection Institutional Repository Document type journal article Rights (c) 2012 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access articledistributed under the terms and conditions of the Creative Commons Attribution license(http://creativecommons.org/licenses/by/3.0/). Files PDF giesensensors-12-054711.pdf 292.06 KB Close viewer /islandora/object/uuid:91c9a47b-466b-495e-b3ea-deb0398ef983/datastream/OBJ/view