Sánchez González, Arturo

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https://academica-e.unavarra.es/handle/2454/50241

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Sánchez González

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Arturo

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Ingeniería Eléctrica, Electrónica y de Comunicación

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ISC. Institute of Smart Cities

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0000-0002-8877-2050

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751294

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812118

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Author: Murayama, Hideaki × Subject: Fast fourier transform ×

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    PublicationOpen Access
    Quasi-distributed 3-cm vibration and strain monitoring using OFDR and in-line interferometers
    (IEEE, 2024-06-21) Sánchez González, Arturo; Leandro González, Daniel; Shi, Muyu; Zhu, Mengshi; Murayama, Hideaki; Ingeniería Eléctrica, Electrónica y de Comunicación; Ingeniaritza Elektrikoa, Elektronikoa eta Telekomunikazio Ingeniaritza; Institute of Smart Cities - ISC; Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa
    This study presents a new quasi-distributed vibration sensing approach with a 3-cm spatial resolution, capable of performing multiparameter measurements. In-line interferometers are employed simultaneously as strain point sensors and reflectors for vibration monitoring due to the Doppler effect. The interferometers consist of capillary fiber segments spliced between single-mode fibers, forming a sensing etalon. A study of the characteristics required for the fiber array fabrication is carried out. A 60 cm array comprising 20 sensing sections is used for the proof-of-concept of the technique for strain and vibration sensing. An analysis of the behavior for static strain and vibrations is performed, both individually and simultaneously, using a free-end cantilever experiment.