100 km BOTDA temperature sensor with sub-meter resolution

Authors
Angulo Vinuesa, XabierUniversity of Alcalá Author; Martín López, SoniaUniversity of Alcalá Author; Corredera, Pedro; González Herráez, MiguelUniversity of Alcalá Author
Identifiers
Permanent link (URI): http://hdl.handle.net/10017/26490
DOI: 10.1117/12.974934
ISSN: 0277-786X
ISBN: 978-0-81949-103-9
Publisher
Society of Photo Optical Instrumentation Engineers (SPIE)
Date
2012-10-15
Affiliation
Universidad de Alcalá. Departamento de Electrónica
Funders
Ministerio de Ciencia e Innovación
Comunidad de Madrid
Bibliographic citation
Xabier Angulo-Vinuesa ; Sonia Martin-Lopez ; Pedro Corredera and Miguel Gonzalez-Herraez "100km BOTDA temperature sensor with sub-meter resolution ", 2012, Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 842117.
Keywords
Brillouin scattering
Differential pulse-width pair technique
Distributed optic fiber sensor
Distributed Raman amplification
Raman scattering
Temperature sensor
Description / Notes
22nd International Conference on Optical Fiber Sensors (OFS2012), Beijing, China | October 14, 2012
Project
info:eu-repo/grantAgreement/MICINN//TEC2009-14423-C02-01/ES/Aplicacion Del Laser Femto Fibre Comb A La Metrologia De Frecuencias Para Comunicaciones Opticas/
info:eu-repo/grantAgreement/MICINN//TEC2009-14423-C02-02/ES/Aplicacion Del Laser Femtocomb Al Estudio De Estructuras Semiconductoras Para Comunicaciones Opticas/
info:eu-repo/grantAgreement/CAM//S2009%2FESP1781/ES//FACTOTEM2
Document type
info:eu-repo/semantics/conferenceObject
Version
info:eu-repo/semantics/acceptedVersion
Publisher's version
http://dx.doi.org/10.1117/12.974934
Rights
Copyright 2013 Society of Photo Optical Instrumentation Engineers
Access rights
info:eu-repo/semantics/openAccess
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Abstract
Temperature or strain sensing in long-range (> 70 km) Brillouin Optical Time Domain Analysis (BOTDA) below 2 meter resolution cannot be trivially achieved due to numerous matters such as fiber attenuation, self-phase modulation, depletion, resolution-uncertainty trade-offs, etc. In this paper we show that combining Raman assistance and the Differential Pulse-width Pair (DPP) technique sub-metrical resolution is achievable in a BOTDA over 100 km sensing range. We successfully demonstrate the detection of a 0.5 meter hot-spot in the position of worst contrast along the fiber.
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