Resolving 1 million sensing points in an optimized differential time‐domain Brillouin sensor
Authors
Domínguez López, AlejandroIdentifiers
Permanent link (URI): http://hdl.handle.net/10017/29779DOI: 10.1364/OL.42.001903
ISSN: 0146-9592
Publisher
Optical Society of America (OSA)
Date
2017-05-15Funders
European Commission
Ministerio de Economía y Competitividad
Comunidad de Madrid
Bibliographic citation
Domínguez-López, A., Soto, M.A., Martín-López, S., Thévenaz, L., González-Herráez, M. Resolving 1 million sensing points in an optimized differential time-domain Brillouin sensor (2017) Optics Letters, 42 (10), pp. 1903-1906
Keywords
Fiber optics sensors
Scattering
Stimulated Brillouin
Nonlinear optics
Fibers
Project
info:eu-repo/grantAgreement/EC/FP7/307441/EU/Ubiquitous optical FIbre NErves/U-FINE
info:eu-repo/grantAgreement/EC/H2020/722509/EU/Fibre Nervous Sensing Systems/FINESSE
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/H2020/WaterJPI-JC-2015-04/EU/Dikes and Debris Flows Monitoring by Novel Optical Fiber Sensors/DOMINO
Document type
info:eu-repo/semantics/article
Version
info:eu-repo/semantics/acceptedVersion
Publisher's version
https://doi.org/10.1364/OL.42.001903Rights
Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
© Optical Society of America, 2017
Access rights
info:eu-repo/semantics/openAccess
Abstract
A differential pulse-width pair (DPP) Brillouin distributed fiber sensor is implemented to achieve centimetric spatial resolution over distances of several kilometers. The presented scheme uses a scanning method in which the spectral separation between the two probe sidebands is kept constant, while the optical frequency of the pump is swept to scan the Brillouin spectral response. Experimental results show that this method avoids detrimental temporal distortions of the pump pulses, which in a standard implementation prevent the DPP method from operating over mid-to-long distances. Such a novel scanning procedure allows the resolving, for the first time in pure time-domain Brillouin sensors, of 1,000,000 sensing points, i.e., 1 cm spatial resolution over 10 km in a conventional acquisition time.
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