Spectral shadowing suppression technique in phase-OTDR sensing based on weak fiber Bragg grating array
Fecha
2019Versión
Acceso abierto / Sarbide irekia
Tipo
Artículo / Artikulua
Versión
Versión aceptada / Onetsi den bertsioa
Identificador del proyecto
ES/1PE/TEC2016-76021
Impacto
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10.1364/OL.44.000526
Resumen
A postprocessing procedure is presented to suppress spectral shadowing in phase-OTDR sensing systems based on a weak fiber Bragg grating array. A complete theoretical analysis of the interfering signals has been carried out to identify a compensation method. The proposed approach has been applied to simulated and experimental phase-OTDR in the context of vibration measurements. Fast Fourier trans ...
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A postprocessing procedure is presented to suppress spectral shadowing in phase-OTDR sensing systems based on a weak fiber Bragg grating array. A complete theoretical analysis of the interfering signals has been carried out to identify a compensation method. The proposed approach has been applied to simulated and experimental phase-OTDR in the context of vibration measurements. Fast Fourier transform has been employed to analyze the obtained results, which has verified the validity of the proposed method to suppress spectral shadowing. [--]
Materias
Effective refractive index,
Fiber Bragg gratings,
Optical time domain reflectometry,
Reflection coefficient,
Refractive index,
Transmission coefficient
Editor
Optical Society of America
Publicado en
Optics Letters, 44 (3), 526-529
Departamento
Universidad Pública de Navarra. Departamento de Ingeniería Eléctrica, Electrónica y de Comunicación /
Nafarroako Unibertsitate Publikoa. Ingeniaritza Elektrikoa, Elektronikoa eta Telekomunikazio Ingeniaritza Saila /
Universidad Pública de Navarra/Nafarroako Unibertsitate Publikoa. Institute of Smart Cities - ISC
Versión del editor
Entidades Financiadoras
This work was performed with support from BEWARE Fellowships/Academia project 1510633 financed by the Walloon region in Belgium. Also with the support of the Spanish Government project TEC 2016-76021-C2-1-R as well of the AEI/FEDER Funds.