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Listar por autor "Griol Barres, Amadeu"

Mostrando ítems 21-40 de 65

Exotic nanophotonics with subwavelength high-index disks

Díaz-Escobar, Evelyn; Pinilla-Cienfuegos, Elena; Barreda, Ángela I.; Mercadé-Morales, Laura; Griol Barres, Amadeu; Martínez, Alejandro (Íñigo Cuiñas Gómez, 2021-09-24)

[EN] High-index dielectric disks with subwavelength dimensions seem relatively simple electromagnetic structures. However, they can give rise to exotic phenomena in nanophotonics. Here we show recent findings that show ...
Experimental measurement of plasmonic nanostructures embedded in silicon waveguide gaps

Espinosa-Soria, Alba; Griol Barres, Amadeu; Martínez Abietar, Alejandro José (Optical Society of America, 2016-05-02)

In this work, we report numerical simulations and experiments of the optical response of a gold nanostrip embedded in a silicon strip waveguide gap at telecom wavelengths. We show that the spectral features observed in ...
Experimental observation of higher-order anapoles in individual silicon disks under in-plane illumination

Díaz-Escobar, Evelyn; Barreda-Gómez, Ángela Inmaculada; Griol Barres, Amadeu; Martínez, Alejandro (American Institute of Physics, 2022-11-14)

[EN] Anapole states¿characterized by a strong suppression of far-field scattering¿naturally arise in high-index nanoparticles as a result of the interference between certain multipolar moments. Recently, the first-order ...
Experimental study of subwavelength grating bimodal waveguides as ultrasensitive interferometric sensors

Torrijos-Morán, Luis; Griol Barres, Amadeu; García-Rupérez, Jaime (The Optical Society, 2019-10-01)

[EN] Over the recent years, subwavelength grating (SWG) structures have increasingly attracted attention in the area of evanescent-field photonic sensors. In this Letter, for the first time to the best of our knowledge, ...
Experimental study of the evanescent-wave photonic sensors response in presence of molecular beacon conformational changes

Ruiz-Tórtola, Ángela; Prats-Quílez, Francisco; Gonzalez-Lucas, Daniel; Bañuls Polo, María-José; Maquieira Catala, Angel; Wheeler, Guy; Dalmay, Tamas; Griol Barres, Amadeu; Hurtado Montañés, Juan; Bohlmann, Helge; Götzen, Reiner; García-Rupérez, Jaime (John Wiley & Sons, 2018)

[EN] An experimental study of the influence of the conformational change suffered by molecular beacon (MB) probesupon the biorecognition of nucleic acid target oligonucleotides over evanescent wave photonic sensorsis ...
Experimental study of the sensitivity of a porous silicon ring resonator sensor using continuous in-flow measurements

Caroselli, Raffaele; Ponce-Alcántara, Salvador; Prats-Quílez, Francisco; Martín-Sánchez, David; Torrijos-Morán, Luis; Griol Barres, Amadeu; Bellieres, Laurent Christophe; Bandarenka, Hanna; Girel, Kseniya; Bondarenko, Vitaly; García-Rupérez, Jaime (The Optical Society, 2017-12-11)

[EN] A highly sensitive photonic sensor based on a porous silicon ring resonator was developed and experimentally characterized. The photonic sensing structure was fabricated by exploiting a porous silicon double layer, ...
Giant injection-locking bandwidth of a self-pulsing limit-cycle in an optomechanical cavity

Navarro-Urrios, Daniel; Arregui, Guillermo; Colombano, Martín F.; Jaramillo-Fernández, Juliana; Pitanti, Alessandro; Griol Barres, Amadeu; Mercadé, Laura; Martínez, Alejandro; Capuj, Néstor E. (Nature Publishing Group, 2022-12-17)

[EN] Locking of oscillators to ultra-stable external sources is of paramount importance for improving close-to-carrier phase noise in free running oscillators. In most of them, such as Micro-Electro-Mechanical-Systems or ...
High performace silicon 2x2 optical switch based on a thermo-optically tunable multimode interference coupler and efficient electrodes

Rosa Escutia, Álvaro; Gutiérrez Campo, Ana María; Brimont, Antoine Christian Jacques; Griol Barres, Amadeu; Sanchis Kilders, Pablo (Optical Society of America, 2016)

Optical switches based on tunable multimode interference (MMI) couplers can simultaneously reduce the footprint and increase the tolerance against fabrication deviations. Here, a compact 2x2 silicon switch based on a ...
High sensitivity and label-free oligonucleotides detection using photonic bandgap sensing structures biofunctionalized with molecular beacon probes

Ruiz-Tórtola, Ángela; Prats-Quílez, Francisco; Gonzalez-Lucas, Daniel; Bañuls Polo, María-José; Maquieira Catala, Ángel; Wheeler, Guy; Dalmay, Tamas; Griol Barres, Amadeu; Hurtado Montañés, Juan; García-Rupérez, Jaime (Optical Society of America, 2018)

[EN] A label-free sensor, based on the combination of silicon photonic bandgap (PBG) structures with immobilized molecular beacon (MB) probes, is experimentally developed. Complementary target oligonucleotides are specifically ...
High signal-to-noise ratio ultra-compact lab-on-a-chip microflow cytometer enabled by silicon optical antennas

Lechago-Buendia, Sergio; García Meca, Carlos; Sánchez Losilla, Nuria; Griol Barres, Amadeu; Martí Sendra, Javier (The Optical Society, 2018)

[EN] We experimentally demonstrate an all-silicon nanoantenna-based micro-optofluidic cytometer showing a combination of high signal-to-noise ratio (SNR) > 14 dB and ultra-compact size. Thanks to the ultra-high directivity ...
Honeycomb Photonic Crystal Waveguides in a Suspended Silicon Slab

Puerto Garcia, Daniel; Griol Barres, Amadeu; Escalante Fernández, José María; Pennec, Yan; Djafari-Rouhani, Bahram; Beugnot, Jean-Charles; Laude, Vincent; Martínez Abietar, Alejandro José (Institute of Electrical and Electronics Engineers (IEEE), 2012-11-15)

[EN] We report experimental evidence of light guiding at telecommunication wavelengths along line-defect honeycomb-lattice photonic crystal waveguides created in suspended silicon slabs. Numerical results show that the ...
Impact of the external resistance on the switching power consumption in VO2 nano gap junctions

Sánchez Diana, Luis David; Rosa Escutia, Álvaro; Griol Barres, Amadeu; Gutierrez Campo, Ana Maria; Homm, Pia; Van Bilzen, Bart; Menghini, Mariela; Locquet, Jean-Pierre; Sanchis Kilders, Pablo (American Institute of Physics, 2017)

[EN] The influence of an external resistance on the performance of VO2 nanogap junctions is analyzed and experimentally characterized. The current-voltage response shows the reversible metal-insulator transition typical ...
Increased sensitivity through maximizing the extinction ratio of SOI delay-interferometer receiver for 10G DPSK

Aamer, Mariam; Griol Barres, Amadeu; Brimont, Antoine Christian Jacques; Gutiérrez Campo, Ana María; Sanchis Kilders, Pablo; Håkansson, A. (Optical Society of America, 2012)

[EN] We present an optimized design for a 10G- differential-phase-shift-keyed (DPSK) receiver based on a silicon-on-insulator (SOI) unbalanced tunable Mach-Zehnder interferometer (MZI) switch in sequence with a Mach-Zehnder ...
Injection locking in an optomechanical coherent phonon source

Arregui, Guillermo; Colombano, Martín F.; Maire, Jeremie; Pitanti, Alessandro; Capuj, Néstor E.; Griol Barres, Amadeu; Martínez, Alejandro; Sotomayor-Torres, Clivia M.; Navarro-Urrios, Daniel (Walter de Gruyter GmbH, 2021-04)

[EN] Spontaneous locking of the phase of a coherent phonon source to an external reference is demonstrated in a deeply sideband-unresolved optomechanical system. The high-amplitude mechanical oscillations are driven by the ...
Integration of Microfluidics, Photonic Integrated Circuits and Data Acquisition and Analysis Methods in a Single Platform for the Detection of Swine Viral Diseases

Manessis, Georgios; Mourouzis, Christos; Griol Barres, Amadeu; Zurita-Herranz, David; Peransi, Sergio; Sánchez, Carlos; Giusti, Alessandro; Gelasakis, Anathasios I.; Bossis, Ioannis (MDPI AG, 2021-11)

[EN] Simple Summary: The control of several swine viral diseases relies mainly on evidence-based prevention protocols due to the lack of effective treatments or vaccines. To design these protocols, laboratory investigation ...
Low-Loss and Compact Silicon Rib Waveguide Bends

Brimont, Antoine Christian Jacques; Hu, X.; Cueff, Sébastien; Rojo-Romeo, Pedro; Saint Girons, Guillaume; Griol Barres, Amadeu; Zanzi, Andrea; Sanchis Kilders, Pablo; Orobtchouk, Regis (Institute of Electrical and Electronics Engineers (IEEE), 2016-02-01)

[EN] Waveguide bends support intrinsically leaky propagation modes due to unavoidable radiation losses. It is known that the losses of deep-etched/strip waveguide bends increase inevitably for decreasing radius. Here, we ...
Low-Power Operation in a Silicon Switch Based on an Asymmetric Mach Zehnder Interferometer

Sánchez Diana, Luis David; Griol Barres, Amadeu; Lechago Buendía, Sergio; Brimont, Antoine Christian Jacques; Sanchis Kilders, Pablo (Institute of Electrical and Electronics Engineers (IEEE): OAJ, 2015-04)

[EN] Mach Zehnder interferometer (MZI) structures are widely used as optical switches in photonic integrated circuits. However, power consumption is still the key parameter to make such devices practical in the silicon ...
Luminescent Thin Films: Transparent Nanometric Organic Luminescent Films as UV-Active Components in Photonic Structures (Adv. Mater. 6/2011)

Aparicio, Francisco J.; Holgado, Miguel; Borrás, Ana; Blaszczyk-Lezak, Iwona; Griol Barres, Amadeu; Barrios, Carlos Angulo; Casquel, Rafael; Sanza, Francisco J.; Sohlström, Hans; Antelius, Mikael; Gonzalez Elipe, Agustín R.; Barranco, Ángel (Wiley-VCH Verlag, 2011)

The inside cover shows two types of photonic structures selectively deposited with a highly fluorescent and transparent organic thin film, as reported by Angel Barranco and co-workers on p. 761. These structures select and ...
Microwave oscillator and frequency comb in a silicon optomechanical cavity with a full phononic bandgap

Mercadé, Laura; Martín, Leopoldo L.; Griol Barres, Amadeu; Navarro-Urrios, Daniel; Martínez, Alejandro (Walter de Gruyter GmbH, 2020-09)

[EN] Cavity optomechanics has recently emerged as a new paradigm enabling the manipulation of mechanical motion via optical fields tightly confined in deformable cavities. When driving an optomechanical (OM) crystal cavity ...
Mid-infrared Plasmonic Inductors

Torres, Víctor; Ortuño, Rubén; Rodríguez-Ulibarri, Pablo; Griol Barres, Amadeu; Martínez Abietar, Alejandro José; Navarro-Cía, Miguel; Beruete, Miguel; Sorolla, Mario (OSA, 2014-06-13)

[EN] Expanding ideas from microwaves, we demonstrate experimentally a terahertz inductor by using meander-lines in a canonical extraordinary transmission (ET) hole array leading to a strong resonance¿s redshift and an ...