Speckle Analysis Method for Distributed Detection of Temperature Gradients with ΦOTDR
Authors
García Ruiz, Andrés; Pastor Graells, Juan; Fidalgo Martins, Hugo; Martín López, Sonia; González Herráez, MiguelIdentifiers
Permanent link (URI): http://hdl.handle.net/10017/26258DOI: 10.1109/LPT.2016.2578043
ISSN: 1041-1135
Publisher
IEEE
Date
2016-09-15Funders
European Commission
Ministerio de Economía y Competitividad
Comunidad de Madrid
Bibliographic citation
Andres Garcia-Ruiz, Juan Pastor-Graells, Hugo F. Martins, Sonia Martin-Lopez, Miguel Gonzalez-Herraez. "Speckle analysis method for distributed
detection of temperature gradients with ΦOTDR", 2016, IEEE Photonics Technology Letters, vol 28, n. 18, pp. 2000-2003.
Keywords
Distributed fiber sensing
Phase-sensitive OTDR
Signal processing
Speckle theory
Temperature sensing
Project
info:eu-repo/grantAgreement/MINECO//TEC2013-45265-R/ES/DETECCION TEMPRANA DE AMENAZAS PARA INFRAESTRUCTURAS CRITICAS USANDO SISTEMAS DISTRIBUIDOS DE FIBRA OPTICA/
info:eu-repo/grantAgreement/MINECO//TEC2015-71127-C2-2-R/ES/REDUCCION DE LOS EFECTOS DE RUIDO EN SISTEMAS DE FIBRA OPTICA NO LINEALES/
info:eu-repo/grantAgreement/CAM//S2009%2FMIT2790/ES/SENSORES E INSTRUMENTACION EN TECNOLOGIAS FOTONICAS/SINFOTON
info:eu-repo/grantAgreement/EC/FP7/307441/EU/Ubiquitous optical FIbre NErves/U-FINE
Document type
info:eu-repo/semantics/article
Version
info:eu-repo/semantics/acceptedVersion
Rights
Atribución-NoComercial-SinDerivadas 3.0 España
© 2011 IEEE
Access rights
info:eu-repo/semantics/openAccess
Abstract
A method to extend the operation of traditional single-frequency phase-sensitive optical time-domain reflectometry (ΦOTDR) to the monitoring of distributed temperature gradients along an optical fiber is proposed and experimentally validated. The measurement principle is derived from the perturbation response of a single-wavelength ΦOTDR signal, which is analyzed as a unidimensional speckle pattern. The method could be implemented in parallel to standard ΦOTDR systems used for distributed vibration sensing with a close to zero cost and without affecting its operation, as it only requires a low computational cost post-processing of the traces which are already acquired. Frequency scanning of the laser, heterodyning or additional hardware are not required. The distributed detection of a temperature gradient of 2.5 °C over 10 min is demonstrated.
Files in this item
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Speckle_analyis_IEEE PHOTONIC ... | 4.700Mb |
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Speckle_analyis_IEEE PHOTONIC ... | 4.700Mb |
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