100 km BOTDA temperature sensor with sub-meter resolution

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Title : 100 km BOTDA temperature sensor with sub-meter resolution
Author : Angulo-Vinuesa, X.; Martín-López, S.; Corredera, P.; González-Herráez, M.
Publisher : Society of Photo Optical Instrumentation Engineers (SPIE)
Date : 2012-10-15
Filiación : Universidad de Alcalá. Departamento de Electrónica
Cita bibliográfica : 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
Keyword : Brillouin scattering
Differential pulse-width pair technique
Distributed optic fiber sensor
Distributed Raman amplification
Raman scattering
Temperature sensor
Description : 22nd International Conference on Optical Fiber Sensors (OFS2012), Beijing, China | October 14, 2012
Proyecto : TEC2009-14423-C02-01 (Ministerio de Ciencia e Innovación); TEC2009-14423-C02-02 (Ministerio de Ciencia e Innovación); FACTOTEM II (S2009/ESP-1781) (Comunidad de Madrid)
Tipo de documento : info:eu-repo/semantics/conferenceObject
Enlace permanente (URI) : http://hdl.handle.net/10017/26490
DOI : 10.1117/12.974934
ISSN : 0277-786X
ISBN : 9780819491039
Versión : info:eu-repo/semantics/acceptedVersion
Version of the editor : http://dx.doi.org/10.1117/12.974934
Derechos : Copyright 2013 Society of Photo Optical Instrumentation Engineers
Derechos de acceso : info:eu-repo/semantics/openAccess

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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