Listar por autor UPNA "Del Villar, Ignacio"
Mostrando ítems 1-20 de 125
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AC/DC millivoltage sensor by means of ITO-coated optical fibers: towards monitoring of biosignals
Aginaga Etxamendi, Concepción Isabel
; Socorro Leránoz, Abián Bentor 
; Fuentes Lorenzo, Omar ; Del Villar, Ignacio ; Corres Sanz, Jesús María ; Matías Maestro, Ignacio (IEEE, 2019)
Contribución a congreso / Biltzarrerako ekarpena 
This contribution shows the monitoring of AC and DC millivoltage signals by means of lossy mode resonances generated by Indium Tin Oxide (ITO) on optical fibers. Sensors were obtained by sputtering ITO thin-films onto 25 ... -
Advances in fiber optic DNA-based sensors: a review
Santano, Desiree ; Urrutia Azcona, Aitor ; Ruiz Zamarreño, Carlos ; Del Villar, Ignacio (IEEE, 2021)
Artículo / Artikulua
DNA is becoming increasingly important in the domain of optical fiber sensors, either as a tool for biosensing, or as a target to detect. In this review the main contributions of the last years are presented both in the ... -
Ag@Fe3O4-coated U-shaped plastic optical fiber sensor for H2S detection
López Vargas, Juan David; Dante, Alex; Allil, Regina C.; Del Villar, Ignacio ; Matías Maestro, Ignacio ; Werneck, Marcelo M. (Elsevier, 2024)
Artículo / Artikulua
This work presents the fabrication of U-shaped plastic optical fiber (POF) sensors for hydrogen sulfide (H2S) detection, coated with Fe3O4 nanoparticles synthetized using the Pulsed Laser Ablation in Liquid (PLAL) technique. ... -
All fiber interferometer for ice detection
Arozarena Arana, Jesús Antonio; Socorro Leránoz, Abián Bentor ; Del Villar, Ignacio ; Díaz Lucas, Silvia ; Matías Maestro, Ignacio (Optica Publishing Group, 2018)
Contribución a congreso / Biltzarrerako ekarpena
This work presents an etched single-mode - multimode - single-mode structure that detects the solid-to-liquid change of state of the water due to an increased refractive index sensitivity within the 1.308 - 1.321 RIU range -
All-fiber ellipsometer for nanoscale dielectric coatings
Imas González, José Javier ; Matías Maestro, Ignacio ; Del Villar, Ignacio ; Ozcariz Celaya, Aritz ; Ruiz Zamarreño, Carlos ; Albert, Jacques (Chinese Academy of Sciences, 2023)
Artículo / Artikulua
Multiple mode resonance shifts in tilted fiber Bragg gratings (TFBGs) are used to simultaneously measure the thickness and the refractive index of TiO2 thin films formed by Atomic Layer Deposition (ALD) on optical fibers. ... -
Analysis of one-dimensional photonic band gap structures with a liquid crystal defect towards development of fiber-optic tunable wavelength filters
Del Villar, Ignacio ; Matías Maestro, Ignacio ; Arregui San Martín, Francisco Javier ; Claus, Richard O. (Optical Society of America, 2003)
Artículo / Artikulua
A theoretical analysis of a fiber optical photonic band gap based tunable wavelength filter is presented. The design presented here is based on the quarter wave reflector with a liquid crystal defect layer in the middle ... -
Arc-induced long period fiber gratings in the dispersion turning points
Colaço, Celso; Caldas, Paulo; Del Villar, Ignacio ; Chibante, Rui; Rego, Gaspar (IEEEOptical Society of America, 2016)
Artículo / Artikulua
We demonstrated the possibility to inscribe longperiod fiber gratings (LPFGs) in a B/Ge codoped fiber by using grating periods shorter than 150 μm. We also have arc-induced in the SMF 28 fiber an LPFG in the dispersion ... -
Asymmetrically and symmetrically coated tapered optical fiber for sensing applications
Del Villar, Ignacio ; Socorro Leránoz, Abián Bentor ; Corres Sanz, Jesús María ; Arregui San Martín, Francisco Javier ; Matías Maestro, Ignacio (SPIE, 2015)
Contribución a congreso / Biltzarrerako ekarpena
The deposition of a non-metallic thin-film in a symmetrically coated tapered optical fiber leads to the generation of resonances due to guidance of a mode in the thin-film. At certain conditions, the resonances overlap ... -
Bloch surface wave resonances generated with dielectric stack of high refractive index contrast deposited on a D-shaped optical fiber for sensing applications
Del Villar, Ignacio ; Kwietniewski, Norbert; Gonzalez-Valencia, Esteban; Burnat, Dariusz; Armas, Dayron; Pitula, Emil; Matías Maestro, Ignacio ; Chiavaioli, Francesco; Torres, Pedro; Smietana, Mateusz (Optica Publishing Group, 2022)
Contribución a congreso / Biltzarrerako ekarpena
A 5-layer stack composed of TiO2 and Al2O3, two materials with a high refractive index contrast, was deposited on a D-shaped fiber to generate Bloch surface wave resonances with an improved figure of merit. -
Bloch waves at the surface of a single-layer coating D-shaped photonic crystal fiber
González Valencia, Esteban; Del Villar, Ignacio ; Torres, Pedro (Optical Society of America, 2020)
Artículo / Artikulua
Bloch surface wave (BSW) platforms are particularly interesting for light confinement and surface sensitivity, as an alternative to the metal-based surface plasmon polaritons (SPP). However, most of the reported BSW platforms ... -
A comparative study between SMS interferometers and lossy mode resonace optical fiber devices for sensing applications
Socorro Leránoz, Abián Bentor ; Hernáez Sáenz de Zaitigui, Miguel ; Del Villar, Ignacio ; Corres Sanz, Jesús María ; Arregui San Martín, Francisco Javier ; Matías Maestro, Ignacio (SPIE, 2015)
Contribución a congreso / Biltzarrerako ekarpena
Optical fiber sensors are of great interest due to their intrinsic advantages over electronic sensors. In this work, the sensing characteristics of two different and novel optical fiber devices are compared, after ... -
Deposition of an overlay with electrostactic self-assembly method in long period fiber gratings
Del Villar, Ignacio ; Achaerandio, Miguel ; Matías Maestro, Ignacio ; Arregui San Martín, Francisco Javier (Optical Society of America, 2005)
Artículo / Artikulua
It was proved that the deposition of an overlay material onto a long-period fiber grating causes important shifts in the wavelengths of the typical attenuation bands that are caused by coupling between cladding and core ... -
Deposition of coatings on long-period fiber gratings: tunnel effect analogy
Del Villar, Ignacio ; Matías Maestro, Ignacio ; Arregui San Martín, Francisco Javier (Springer, 2006)
Artículo / Artikulua
The sensitivity of Long-period fiber gratings (LPFGs), coated with high-refractive-index thin film overlays, to the refractive index and the thickness of the overlay, and to the ambient refractive index, can be enhanced ... -
Desarrollo de sensores basados en guía de onda plana y fibra óptica
Fuentes Lorenzo, Omar (2022)
Tesis doctoral / Doktoretza tesia
En este trabajo de tesis se muestra el estudio y diseño de varias estructuras de guías de ondas ópticas. En los primeros capítulos se trabaja sobre configuraciones ya conocidas basadas en fibras monomodo – multimodo – ... -
Design rules for lossy mode resonance based sensors
Del Villar, Ignacio ; Hernáez Sáenz de Zaitigui, Miguel ; Ruiz Zamarreño, Carlos ; Sánchez Zábal, Pedro ; Fernández Valdivielso, Carlos ; Arregui San Martín, Francisco Javier ; Matías Maestro, Ignacio (Optical Society of America, 2012)
Artículo / Artikulua
Lossy mode resonances can be obtained in the transmission spectrum of cladding removed multimode optical fiber coated with a thin-film. The sensitivity of these devices to changes in the properties of the coating or the ... -
Development of an optical refractometer by analysis of one-dimensional photonic bandgap structures with defects
Matías Maestro, Ignacio ; Del Villar, Ignacio ; Arregui San Martín, Francisco Javier (Optical Society of America, 2003)
Artículo / Artikulua
A theoretical analysis of an optical fiber photonic-bandgap-based refractometer is presented. The design is based on a quarter-wave ref lector with one defect. By modifying both the real and the imaginary parts of the index ... -
Direct functionalization of TiO2/PSS sensing layer for an LMR-based optical fiber reusable biosensor
Santano, Desiree ; Socorro Leránoz, Abián Bentor ; Del Villar, Ignacio (IEEE, 2023)
Artículo / Artikulua
Functionalization plays a crucial role in the development of biosensors. In this study, bioreceptors were directly immobilized onto the surface of a sensing layer after physical activation, avoiding the need for longer and ... -
Electrochemical lossy mode resonance for the detection of manganese ions
Domínguez Rodríguez, Ismel ; Corres Sanz, Jesús María ; Del Villar, Ignacio ; Mozo, Juan D.; Simerova, Radka; Sezemsky, Petr; Stranak, Vitezslav; Śmietana, Mateusz; Matías Maestro, Ignacio (Elsevier, 2023)
Artículo / Artikulua
In this work we propose electrochemical lossy mode resonance (eLMR) as a powerful method for the detection of manganese (Mn) ions. The sensor is based on a simple planar waveguide (sodasingle bondlime glass coverslip) ... -
Enhancement of lossy mode resonance sensing properties by the introduction of an intermediate low-refractive-index layer
Armas, Dayron; Kwietniewski, Norbert; Matías Maestro, Ignacio ; Burnat, Dariusz; Śmietana, Mateusz; Del Villar, Ignacio (Optica, 2023)
Artículo / Artikulua
Devices based on the lossy mode resonance (LMR) effect have found numerous sensing applications. Herein, the enhancement of the sensing properties by the introduction of an intermediate layer between the substrate and the ... -
Enhancement of sensitivity in long period fiber gratings with deposition of low refractive index materials
Del Villar, Ignacio ; Matías Maestro, Ignacio ; Arregui San Martín, Francisco Javier (Optical Society of America, 2005)
Artículo / Artikulua
It was proved [Opt. Lett. 30, 720 (2005)] that the deposition of an overlay of higher refractive index than that of the cladding on a long-period fiber grating (LPFG) causes large shifts in the attenuation bands induced by ...
