Simple Baseband Method for the Distributed Analysis of Brillouin Phase-Shift Spectra
Authors
López Gil, Alexia InésIdentifiers
Permanent link (URI): http://hdl.handle.net/10017/26306DOI: 10.1109/LPT.2016.2541699
ISSN: 1041-1135
Publisher
IEEE
Date
2016-07-01Funders
European Commission
Ministerio de Economía y Competitividad
Comunidad de Madrid
Bibliographic citation
Alexia Lopez-Gil, Xabier Angulo-Vinuesa, Alejandro Dominguez-Lopez,
Sonia Martin-Lopez, and Miguel Gonzalez-Herraez, "Simple Baseband Method for the Distributed
Analysis of Brillouin Phase-Shift Spectra" IEEE Photonics Technology Letters, 2016, Vol 28, n. 13, pp. 1379-1382.
Keywords
Brillouin distributed sensors
Brillouin optical time domain analysis
Brillouin scattering
Fiber optics sensor
Interferometry
Nonlinear optics
Temperature sensor
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/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
Document type
info:eu-repo/semantics/article
Version
info:eu-repo/semantics/acceptedVersion
Publisher's version
http://dx.doi.org/10.1109/LPT.2016.2541699Rights
Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
Access rights
info:eu-repo/semantics/openAccess
Abstract
The phase shift feature of stimulated Brillouin scattering is rarely used for the development of sensors based on the Brillouin optical time-domain analysis (BOTDA). However, this feature shows significant interest for sensing thanks to its linear dependence around the Brillouin frequency shift. Until now, distributed Brillouin phase shift (BPS) measurements required complex modulations, high-bandwidth detection, and sharp filtering. Recently, we introduced the possibility of developing simple distributed measurements of BPS in BOTDA using the baseband technology. The basic idea was the use of a Sagnac interferometer coupled to a conventional BOTDA without filtering and incorporating balanced detection. Although the concept was demonstrated, the setup proposed (using a 2 × 2 optical coupler) had significant shortcomings, the main one being its lack of stability due to the need of setting the interferometer bias through the polarization of the interacting waves. This restricted severely the practicality of the method. In this letter, we propose a setup with enhanced stability thanks to the use of a 3 × 3 optical coupler. With this configuration, the impact of the drifts along the measurement is strongly reduced, and the quality of the measurements improves substantially. The method is theoretically studied and demonstrated experimentally.
Files in this item
Files | Size | Format |
|
---|---|---|---|
Simple_baseband_IEEE_Photonic_ ... | 1.221Mb |
![]() |
Files | Size | Format |
|
---|---|---|---|
Simple_baseband_IEEE_Photonic_ ... | 1.221Mb |
![]() |
Collections
- ELECTRON - Artículos [166]
- Framework Program 7 [105]
- INGFOTON - Artículos [104]