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Listar por palabra clave "Optical fiber sensors"

Mostrando ítems 1-18 de 18

An Interrogation Technique of FBG Cascade Sensors Using Wavelength to Radio-Frequency Delay Mapping

Hervás Peralta, Javier; Fernandez-Pousa, C.R.; Barrera Vilar, David; Pastor Abellán, Daniel; Sales Maicas, Salvador; Capmany Francoy, José (Institute of Electrical and Electronics Engineers (IEEE), 2015-06-01)

A technique is proposed to interrogate a distributed photonic sensor composed of seven standard fiber Bragg gratings in cascade. A microwave-modulated optical signal is launched into an FBG cascade and subsequently ...
Assessment of Fiber Bragg Grating Sensors for Monitoring Shaft Vibrations of Hydraulic Turbines

Sánchez-Botello, Xavier; Roig, Rafael; De La Torre, Oscar; Madrigal-Madrigal, Javier; Sales Maicas, Salvador; Escaler, Xavier (MDPI AG, 2023-08)

[EN] The structural dynamic response of hydraulic turbines needs to be continuously monitored to predict incipient failures and avoid catastrophic breakdowns. Current methods based on traditional off-board vibration sensors ...
Bragg Gratings Inscribed in Solid-Core Microstructured Single-Mode Polymer Optical Fiber Drawn From a 3D-Printed Polycarbonate Preform

Zubel, Michal G.; Fasano, Andrea; Woyessa, Getinet Taffesse; Min, Rui; Leal-Junior, Arnaldo Gomes; Theodosiou, Antreas; Marques, Carlos A. F.; Rasmussen, Henrik K.; Bang, Ole; Ortega Tamarit, Beatriz; Kalli, Kyriacos; Frizera-Neto, Anselmo; Pontes, Maria Jose; Sugden, Kate (Institute of Electrical and Electronics Engineers, 2020-11-01)

[EN] This paper reports the first microstructured solid-core fiber drawn from a 3D-printed preform and the first fiber Bragg gratings inscribed in a fiber of this type. The presented fiber is made of polycarbonate and ...
Design of optical fiber sensors and interrogation schemes

Sartiano, Demetrio (Universitat Politècnica de València, 2021-02-15)

[ES] Las fibras ópticas son dispositivos muy utilizados en el campo de las telecomunicaciones desde su descubrimiento. En las últimas décadas, las fibras ópticas comenzaron a utilizarse como sensores fotónicos. Los primeros ...
Fast Incoherent OFDR Interrogation of FBG Arrays Using Sparse Radio Frequency Responses

Clement, J.; Hervás-Peralta, Javier; Madrigal-Madrigal, Javier; Maestre, H; Torregrosa, G.; Fernandez-Pousa, Carlos R.; Sales Maicas, Salvador (Institute of Electrical and Electronics Engineers, 2018-10-01)

[EN] We present two implementations of fast, discrete incoherent optical frequency-domain reflectometers (I-OFDR) for the interrogation of equally spaced fiber Bragg grating (FBG) arrays, based on the determination of the ...
Fiber Bragg Grating Sensors for Underwater Vibration Measurement: Potential Hydropower Applications

de la Torre, Oscar; Floris, Ignazio; Sales Maicas, Salvador; Escaler, Xavier (MDPI AG, 2021-07)

[EN] The present paper assesses the performance and characteristics of fiber Bragg grating sensors, with a special interest in their applications in hydraulic machinery and systems. The hydropower industry is turning to ...
Fiber Bragg Gratings for Medical Applications and Future Challenges: A Review

Lo Presti, Daniela; Massaroni, Carlo; Leitao, Catia Sofia Jorge; Domingues, Maria De Fátima; Sypabekova, Marzhan; Barrera, David; Floris, Ignazio; Massari, Luca; Oddo, Calogero Maria; Sales Maicas, Salvador; Iordachita, Iulian Ioan; Tosi, Daniele; Schena, Emiliano (Institute of Electrical and Electronics Engineers, 2020)

[EN] In the last decades, fiber Bragg gratings (FBGs) have become increasingly attractive to medical applications due to their unique properties such as small size, biocompatibility, immunity to electromagnetic interferences, ...
Fiber Optic Refractive Index Distributed Multi-Sensors by Scattering-Level Multiplexing With MgO Nanoparticle-Doped Fibers

Ayupova, Takhmina; Shaimerdenova, Madina; Korganbayev, Sanzhar; Sypabekova, Marzhan; Bekmurzayeva, Aliya; Blanc, Wilfried; Sales Maicas, Salvador; Guo, Tuan; Molardi, Carlo; Tosi, Daniele (Institute of Electrical and Electronics Engineers, 2020-03-01)

[EN] In this work, we present the architecture of a multiplexed refractive index (RI) sensing system based on the interrogation of Rayleigh backscattering. The RI sensors are fabricated by fiber wet-etching of a high-scattering ...
Interrogation of a Sensor Array of Identical Weak FBGs using Dispersive Incoherent OFDR

Clement, Juan; Torregrosa, German; Hervás-Peralta, Javier; Barrera Vilar, David; Sales Maicas, Salvador; Fernandez-Pousa, Carlos R. (Institute of Electrical and Electronics Engineers (IEEE), 2016-05-15)

[EN] Incoherent Optical Fourier-Domain Reflectometry incorporating a dispersive delay line is used for the interrogation of an array of three identical fiber Bragg gratings with a Bragg wavelength of 1552.81 nm, reflectivity ...
KLT Based Interrogation Technique for FBG Multiplexed Sensor Tracking

Hervás-Peralta, Javier; Tosi, Daniele; García-Miquel, Héctor; Barrera Vilar, David; Fernandez-Pousa, Carlos R.; Sales Maicas, Salvador (Institute of Electrical and Electronics Engineers, 2017)

[EN] The Karhunen-Loeve transform (KLT) is used to retrieve the wavelength information of several fiber Bragg gratings (FBGs) that are acting as a multiplexed sensor. The modulated light of a broadband source is launched ...
Microwave Photonic Filtering for Interrogating FBG-Based Multicore Fiber Curvature Sensor

Zheng, Di; Madrigal-Madrigal, Javier; Barrera Vilar, David; Sales Maicas, Salvador; Capmany Francoy, José (Institute of Electrical and Electronics Engineers, 2017-10-15)

[EN] We propose and experimentally demonstrate an approach to perform high-resolution and temperature-insensitive interrogation of a fiber Bragg grating (FBG)-based multicore fiber (MCF) curvature sensor using a microwave ...
Opto-Mechanical Interactions in Multi-Core Optical Fibers and Their Applications

Diamandi, Hilel Hagai; London, Yosef; Bergman, Arik; Bashan, Gil; Madrigal-Madrigal, Javier; Barrera, David; Sales Maicas, Salvador; Zadok, Avi (Institute of Electrical and Electronics Engineers, 2020-08)

[EN] Optical fibers containing multiple cores are being developed towards capacity enhancement in space-division multiplexed optical communication networks. In many cases, the fibers are designed for negligible direct ...
Refractive Index and Temperature Sensing Using Inter-Core Crosstalk in Multicore Fibers

Madrigal-Madrigal, Javier; Barrera Vilar, David; Sales Maicas, Salvador (Institute of Electrical and Electronics Engineers, 2019-09-15)

[EN] Multicore optical fibers are of great interest in the optical sensing field. Their core diversity and spatial distribution enable the development of sensing mechanisms that are not possible in single-core fibers. In ...
Regenerated Fiber Bragg Gratings in Multicore Fiber for Multi-parameter Sensing

Madrigal-Madrigal, Javier; Barrera, David; Sales Maicas, Salvador (Institute of Electrical and Electronics Engineers, 2020-08)

[EN] Multiple regenerated fiber Bragg gratings were inscribed in all the cores of a seven-core fiber in order to develop a multi-parameter sensor designed to operate at high temperatures. We experimentally showed the ...
Simultaneous measurement of humidity and temperature based on a partially coated optical fiber long period grating

Urrutia, Aitor; Goicoechea, Javier; Ricchiuti, Amelia Lavinia; Barrera Vilar, David; Sales Maicas, Salvador; Arregui, Francisco J. (Elsevier, 2016-05)

A humidity and temperature optical fiber sensor based on a long-period grating (LPG), which can provide simultaneous response to both magnitudes, is proposed and demonstrated via experiments. Previously, the LPG was fully ...
Sistema de interrogación híbrido basado en correlación de pulsos y FBG para sensores de deformación distribuidos y sensores puntuales de temperatura

Bueno Martínez, Antonio (Universitat Politècnica de València, 2013-02-25)

[ES] En este trabajo se propone y se demuestra la viabilidad de un esquema de interrogación híbrido para sensores distribuidos de deformación y sensores puntuales de temperatura. Este sistema explota las ventajas que ...
Thermal profile detection through high-sensitivity fiber optic chirped Bragg grating on microstructured PMMA fiber

Korganbayev, Sanzhar; Min, Rui; Jelbuldina, Madina; Hu, Xuehao; Caucheteur, Christophe; Bang, Ole; Ortega Tamarit, Beatriz; Marques, Carlos; Tosi, Daniele (Institute of Electrical and Electronics Engineers, 2018-10-15)

[EN] In this work, a linearly chirped fiber Bragg grating (CFBG) inscribed in a microstructured polymer optical fiber (mPOF) has been demonstrated for detecting temperature pro- files during thermal treatments. A CFBG of ...
Weight Measurement and Vibration Detection Sensor Based on a Thermoplastic Polyurethane Optical Fiber

Maldonado-Hurtado, Daniel Gustavo; Llera, Miguel; Flahaut, Frédéric; Benoit, Justin; Barrera Vilar, David (Institute of Electrical and Electronics Engineers, 2024-03-01)

[EN] An elastomeric optical fiber core was fabricated by drawing a 1160-D thermoplastic polyurethane preform. The cut-back technique was used to measure fiber attenuation for a light spectrum ranging from 550 nm to 875 nm, ...