Sub-metric spatial resolution over an extended range using differential time-domain Brillouin sensing
Authors
Domínguez López, Alejandro; Soto Hernández, Marcelo Alfonso; Martín López, Sonia; González Herráez, Miguel; Thévenaz, LucIdentifiers
Permanent link (URI): http://hdl.handle.net/10017/27698DOI: 10.1117/12.2236927
ISSN: 0277-786X
ISBN: 978-151060219-9
Publisher
Society of Photo-Optical Instrumentation Engineers (SPIE)
Date
2016-05-31Funders
European Commission
Ministerio de Economía y Competitividad
Comunidad de Madrid
Bibliographic citation
Alejandro Dominguez-López ; Marcelo A. Soto ; Sonia Martin-Lopez ; Miguel Gonzalez-Herraez ; Luc Thevenaz; "
Sub-metric spatial resolution over an extended range using differential time-domain Brillouin sensing". Proc. SPIE 9916, Sixth European Workshop on Optical Fibre Sensors, 991635 (May 30, 2016).
Keywords
Brillouin distributed sensors
Brillouin scattering
Fiber optic sensors
Nonlinear optics
Project
info:eu-repo/grantAgreement/EC/FP7/307441/EU/Ubiquitous optical FIbre NErves/U-FINE
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/CAM//S2009%2FMIT2790/ES/SENSORES E INSTRUMENTACION EN TECNOLOGIAS FOTONICAS/SINFOTON
Document type
info:eu-repo/semantics/article
Version
info:eu-repo/semantics/acceptedVersion
Publisher's version
http://dx.doi.org/10.1117/12.2236927Access rights
info:eu-repo/semantics/openAccess
Abstract
This paper reports on a distributed fiber sensing scheme to achieve sub-metric spatial resolution and long sensing ranges based on a differential pulse-width pair (DPP) Brillouin sensor. The 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 the method avoids detrimental temporal distortions of the pulses, which in a standard implementation prevent the DPP method to operate over long distances. Here we demonstrate that this novel scanning method enables distributed sensing over 37.5 km with a spatial resolution of 20 cm and a frequency uncertainty of 1.9 MHz, obtained with 2k averages in a measurement time of a few minutes.
Files in this item
Files | Size | Format |
|
---|---|---|---|
Sub_metric_Dominguez_Sixth_2016.pdf | 3.210Mb |
|
Files | Size | Format |
|
---|---|---|---|
Sub_metric_Dominguez_Sixth_2016.pdf | 3.210Mb |
|