Systems to interrogate photonic sensors based on long fiber Bragg gratings (FBGs) are illustrated and experimentally validated. The FBGs-based devices are used as quasi-distributed sensors and have demonstrated their ability ...
Regenerated Fibre Bragg Gratings have the potential for high-temperature monitoring. In this paper, the inscription of Fibre Bragg Gratings (FBGs) and the later regeneration process to obtain Regenerated Fiber Bragg Gratings ...
[EN] New optical fiber based spectroscopic tools open the possibility to develop more robust and efficient characterization experiments. Spectral filtering and light reflection have been used to produce compact and versatile ...
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 ...
Gasulla Mestre, Ivana; Capmany Francoy, José; Sancho Durá, Juan; Lloret Soler, Juan Antonio; Sales Maicas, Salvador(Sociedad Española de Óptica, 2011)
[EN] We present a comprehensive review of the application of slow and fast light techniques to the field of microwave photonics. Basic principles leading to the implementation of key desired functionalities as tunable ...
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 ...
Berrio Valencia, Luis Humberto; Sales Maicas, Salvador; Barrera Vilar, David(Institute of Electrical and Electronics Engineers (IEEE), 2012-09)
The following paper presents a bend sensor that consists of three Bragg Gratings inside a Standard Fiber Optic for the characterization of the reflected wavelengths with respect to the radius of curvature in conditions of ...
[EN] A plastic filament of poly (methyl methacrylate) (PMMA) was fabricated by extrusion. The mode confinement was simulated using numerical software. The idea is to study how the light intensity changes inside the plastic ...
Lloret Soler, Juan Antonio; Morthier, Geert; Ramos Pascual, Francisco; Sales Maicas, Salvador; Van Thourhout, D.; Spuesens, T.; Olivier, N.; Fedeli, J.M.; Capmany Francoy, José(Optical Society of America, 2012)
A broadband microwave photonic phase shifter based on a single III-V microdisk resonator heterogeneously integrated on and coupled to a nanophotonic silicon-on-insulator waveguide is reported. The phase shift tunability ...
Chin, Sanghoon; Thevenaz, Luc; Sancho Durá, Juan; Sales Maicas, Salvador; Capmany Francoy, José; Berger, Perrine; Bourderionnet, Jerome; Dolfi, Daniel(Optical Society of America: Open Access Journals, 2010-10-11)
[EN] We experimentally demonstrate a novel technique to process broadband microwave signals, using all-optically tunable true time delay in optical fibers. The configuration to achieve true time delay basically consists ...
Amat Martínez, Rafael(Universitat Politècnica de València, 2015-02-23)
Este Proyecto de Fin de Carrera posee un carácter multidisciplinar, relaciona áreas como la química, magnetismo y ciencia de los materiales, pero manteniendo en todo momento el contexto común de las comunicaciones ópticas ...
[EN] This paper is focused on the characterization of a fiber Bragg grating (FBG) sensor interrogation system based on a fiber ring laser with a semiconductor optical amplifier as the gain medium, and an in-loop electro-optical ...
Ricchiuti, Amelia L.; Suárez Álvarez, Isaac; Barrera Vilar, David; Rodríguez Cantó, Pedro Javier; Fernandez-Pousa, Carlos R.; Abargues, Rafael; Sales Maicas, Salvador; Martinez-Pastor, Juan; Capmany Francoy, José(Institute of Electrical and Electronics Engineers (IEEE), 2014-02-15)
A novel scheme for the control of microwave signals carried at optical wavelengths by use of PbS colloidal quantum dots embedded in PMMA waveguides is presented. When these structures are pumped at wavelengths where PbS ...
Perez, Joaquin; Suárez Álvarez, Isaac; Hervás-Peralta, Javier; Ricchiuti, Amelia Lavinia; Martinez-Pastor, Juan P.; Sales Maicas, Salvador(Institute of Electrical and Electronics Engineers (IEEE), 2016-08-01)
[EN] A new microwave true-time delay (TTD) photonic unit based on the dispersion of PbS colloidal quantum dots (QDs) in a Polymethyl methacrylate (PMMA) and the SU8 photoresist is presented. With this aim, the PbS-PMMA and ...
Ricchiuti, Amelia Lavinia; Barrera Vilar, David; Urrutia Azcona, Aitor; Goicoechea Fernández, Javier; Arregui, Francisco J.; Sales Maicas, Salvador(Institute of Electrical and Electronics Engineers (IEEE), 2016-03-15)
A fiber optic liquid-level sensor based on a long period grating (LPG) is proposed and experimentally validated. The principle of operation is based on a technique used to analyze microwave photonics filters. A 4-cm-long ...
[EN] Sensors based on Bragg gratings inscribed in conventional single mode fibers are expensive due to the need of a sophisticated, but low-speed, interrogation system. As an alternative to overcome this issue, in this ...
Khan, Fouzia; Barrera, David; Sales Maicas, Salvador; Misra, Sarthak(Elsevier, 2021-01-01)
[EN] This paper presents a technique to acquire measurements of curvature, twist and pose for two multi-core fibers; one with straight cores and the other with helical cores. Both the fibers have multiple fiber Bragg grating ...
Segarra Salas, Patricia(Universitat Politècnica de València, 2020-01-02)
[ES] Este TFG trata sobre la investigación y el desarrollo de sensores basados en FBGs inscritas en fibras de varios núcleos cuya finalidad será estudiar la variación de la curvatura de la fibra en un medio acuático mediante ...