Pradas Martínez, Javier

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https://academica-e.unavarra.es/handle/2454/49807

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Pradas Martínez

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Javier

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Ingeniería Eléctrica, Electrónica y de Comunicación

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751391

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812228

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2020 - 20234
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Now showing 1 - 4 of 4
  • Thumbnail Image
    PublicationOpen Access
    Multicore fiber sensors for strain measurement towards traffic monitoring
    (SPIE, 2023) Sánchez González, Arturo; Pradas Martínez, Javier; Corera Orzanco, Íñigo; Bravo Acha, Mikel; Leandro González, Daniel; Dauliat, Romain; Jamier, Raphael; Roy, Philippe; Pérez Herrera, Rosa Ana; López-Amo Sáinz, Manuel; Ingeniería Eléctrica, Electrónica y de Comunicación; Institute of Smart Cities - ISC; Ingeniaritza Elektrikoa, Elektronikoaren eta Telekomunikazio Ingeniaritzaren; Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, PJUPNA06-2022
    In this work, two new interferometric sensors based on multicore optical fibers for the measurement of strain with the ultimate goal of traffic monitoring are presented. The operating principle of each sensor relied on the monitoring of the phase shift difference accumulated between the supermodes of the structure of the multicore segment in a full round trip. The strain characterization for both sensors resulted in a linear response, with sensitivities of -4.073·10-3 rad/με and - 4.389·10-3 rad/με for the aligned and V-shaped cases respectively, and one-hour instabilities below 4.6·10-3 rad with a 95% confidence level. These results suggest its feasibility in applications requiring high sensitivities over very wide strain ranges, such as heavy-vehicle traffic monitoring. To corroborate the hypothesis, both sensors were integrated into the pavement and their response to the traffic was analyzed.
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    PublicationOpen Access
    One-year analysis of road condition using FBG arrays
    (SPIE, 2023) Corera Orzanco, Íñigo; Pradas Martínez, Javier; Leandro González, Daniel; Bravo Acha, Mikel; López-Amo Sáinz, Manuel; Ingeniería Eléctrica, Electrónica y de Comunicación; Ingeniaritza Elektrikoa, Elektronikoaren eta Telekomunikazio Ingeniaritzaren; Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, PJUPNA06-2022
    In this work, it is presented an analysis of FBG arrays installed in a public road. The arrays were installed in a newly paved urban road and were monitored for more than one year. The study evidences the permanent deformation of the wearing course and the degradation of the reflected spectra of the sensors.
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    PublicationOpen Access
    Multiparameter sensor based on a multiinterferometric serial configuration for temperature and strain measurements
    (IEEE, 2021) Pérez Herrera, Rosa Ana; Bravo Acha, Mikel; Leandro González, Daniel; Novais, Susana; Pradas Martínez, Javier; López-Amo Sáinz, Manuel; Ingeniaritza Elektrikoa, Elektronikoaren eta Telekomunikazio Ingeniaritzaren; Institute of Smart Cities - ISC; Ingeniería Eléctrica, Electrónica y de Comunicación; Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa
    In this work, a multi-parameter point sensor based on the combination of Fabry-Perot (FP) and the anti-resonant (AR) reflecting guidance in cascade configuration is proposed and experimentally demonstrated. This structure, based on FP interference and AR reflecting guidance, was fabricated with two different air micro-cavities. The attained experimental results showed different strain and temperature sensitivities for the antiresonance contribution. However, when analyzing the FP interference, only strain sensitivity was observed, demonstrating that this air micro-cavity was also insensitive to temperature variations.
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    PublicationOpen Access
    Desarrollo experimental de sensores de fibra óptica basados en microcavidades de fibra hueca
    (2020) Pradas Martínez, Javier; Pérez Herrera, Rosa Ana; Escuela Técnica Superior de Ingeniería Industrial, Informática y de Telecomunicación; Industria, Informatika eta Telekomunikazio Ingeniaritzako Goi Mailako Eskola Teknikoa
    El autor, motivado por la ampliación del conocimiento sobre la fibra óptica y los fenómenos físicos que ocurren en su interior, ha enfocado el estudio de los sensores de fibra óptica basados en microcavidades de fibra hueca. Dicho trabajo se divide en dos apartados principales, el primero de ellos explica el método que se ha desarrollado para fabricar dichos sensores con el material disponible en el laboratorio de fotónica Teralab. En la segunda parte se realiza un análisis de las propiedades de estos sensores y se verifica su correcto funcionamiento. Además, como estudio adicional, se ha fabricado un sensor capaz de medir simultáneamente temperatura y deformación, basado en un interferómetro compuesto por varias microcavidades Fabry-Perot.