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Listar por palabra clave "Microwave photonics"

Mostrando ítems 1-20 de 87

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A photonic microwave filter based on an asymmetric silicon Mach-Zehnder modulator

Gutiérrez Campo, Ana María; Sanchis Kilders, Pablo; Brimont, Antoine Christian Jacques; Thomson, David J.; Gardes, Frédéric Y.; Reed, Graham T.; Fédéli, Jean Marc; Vidal Rodriguez, Borja (Institute of Electrical and Electronics Engineers (IEEE), 2013-08)

[EN] A new approach for implementing an integrable photonic microwave filter based on exploiting the asymmetry of a CMOS-compatible silicon Mach-Zehnder modulator is demonstrated. The strong dependence of the modulator ...
Advanced RF Interferometry Structure for Improving Operation Range

Benítez-González, Jesús; Mora Almerich, José (Institute of Electrical and Electronics Engineers, 2018)

[EN] In this letter, a novel structure combining low coherence interferometry (LCI) and microwave photonics (MWP) is proposed. In this case, the electro-optic modulator is strategically placed inside the interferometric ...
Analysis and experimental characterization of silicon Mach-Zehnder Modulators for the transmission of radio signals (Análisis y caracterización experimental de moduladores Mach-Zehnder en silicio para la transmisión de señales de radio.)

Belio Apaolaza, Íñigo Francisco (Universitat Politècnica de València, 2021-10-11)

[ES] "Silicon-on-insulator", o silicio sobre aislante, se ha posicionado como una de las plataformas más prometedoras para circuitos integrados en fotónica de microondas, incluyendo moduladores ópticos. La compatibilidad ...
Analytical Model for Hybrid Amplitude and Phase Modulation in Dispersive Radio over Fiber Links

Vidal Rodriguez, Borja (Elsevier, 2011-10-01)

A general model of analog microwave photonic links employing cascaded amplitude and phase external modulation is theoretically derived. Chromatic dispersion is also included in the model showing a different dispersion ...
Antenna Phased Array Beamforming at 26 GHz Using Optical True Time-Delay

Bohata, Jan; Lonský, Tomás; Spácil, Jan; Hazdra, Pavel; Hradecký, Zdenek; Komanec, Matej; Zvanovec, Stanislav; Vallejo-Castro, Luis; Ortega Tamarit, Beatriz (IEEE, 2020-07-22)

[EN] Multi-element antenna beam steering in free-licence higher frequency bands is one of the crucial features of 5G networks enabling better tracking of the users. In this paper, we present an experimental microwave ...
Apodized Coupled Resonator Optical Waveguides: Theory, design and characterization

Doménech Gómez, José David (Universitat Politècnica de València, 2013-09-23)

In this work we propose the apodization or windowing of the coupling coefficients of the unit cells conforming a coupled resonator device as a mean to reduce the level of secondary sidelobes in the case of SCISSOR configuration ...
Application of slow and fast light effects to microwave photonics

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 ...
Bidirectional WDM-OOFDM access network based on a sliceable optical transceiver with colorless ONUs

Sekkiou, Imene; Chicharro López, Francisco Israel; Ortega Tamarit, Beatriz; Mora Almerich, José (Elsevier, 2018)

[EN] A WDM OOFDM access network using a centralized optical transceiver based on a single optical broadband sliced source at the Central Office is presented as a low cost solution. Such network offers downlink and uplink ...
Brillouin Microwave Filter with enhanced Skirt Selectivity using a Birefringent Fiber

Samaniego, Diego; Vidal Rodriguez, Borja (Institute of Electrical and Electronics Engineers, 2019-03-15)

[EN] A technique to enhance the slope of a photonic microwave filter based on the stimulated Brillouin scattering is proposed. It relies on exploiting the polarization dependence of Brillouin gain in birefringent fibers. ...
Brillouin-Based Full Polarization Control of Light and Applications

Zoireff Juárez, Gustavo (Universitat Politècnica de València, 2024-06-21)

[ES] La polarización es una propiedad fundamental de la luz que tiene muchas implicaciones tanto en la vida diaria como en los desarrollos tecnológicos más avanzados que emplean la luz. En consecuencia, controlar la ...
Broadband photonic microwave noise sources

Vidal Rodriguez, Borja (Institute of Electrical and Electronics Engineers, 2020-05-05)

[EN] The generation of wideband microwave white noise based on optical technology is investigated. It is shown that strong broadband noise in the microwave band can be generated using amplified spontaneous noise (ASE). ...
Caracterización de un sistema de generación fotónica de señales de banda G

Peris Cuesta, Guillem (Universitat Politècnica de València, 2019-10-09)

[ES] El aumento de tráfico de datos en la red en los próximos años requerirá de unos parámetros que la actual tecnología no va a poder cumplir. La región de sub-THz es una zona del espectro aún por explotar donde los anchos ...
Cascaded Four-Wave Mixing for Microwave Photonic Harmonic Multiplication

Vidal Rodriguez, Borja; Bockelt, Alexander Stefan; Palací López, Jesús (Institute of Electrical and Electronics Engineers (IEEE), 2013-01-01)

Enhanced multiple four-wave mixing (FWM) processes in nonlinear fiber by phase modulation of the pump carrier are investigated for harmonic mixing multiplication of microwave signals. The enhancement of cascaded FWM by ...
Conditional frequency-domain beamsplitters using phase modulators

Capmany Francoy, José; Fernández-Pousa, Carlos R. (Institute of Electrical and Electronics Engineers (IEEE), 2011-10)

We propose and explore the families of fully tunable, conditional 2 x 2 frequency-domain beamsplitters that result from sideband coupling in phase modulators. Full tunability is obtained by tailoring the driving voltage ...
Continuously Tunable Photonic Microwave Filter Based on a Spatial Light Modulator

Mengual Chulia, Teresa; Vidal Rodriguez, Borja; Martí Sendra, Javier (Elsevier, 2008-05-15)

[EN] An optical microwave filter architecture which can be continuously tuned is proposed and demonstrated. The architecture is based on a nematic liquid crystal spatial light modulator in parallel configuration and has ...
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 ...
Directly-Modulated 1310 nm Laser TOSA Developed for Seamless Millimeter Wave Radio Over Fiber Transmission

Komanec, Matej; Halmo, Leos; Adler, Viktor; Bohata, Jan; Botella-Campos, Marta; Zverina, Jakub; Zvanovec, Stanislav (Institute of Electrical and Electronics Engineers, 2023-06-21)

[EN] We present for the first time a directly-modulated high-frequency laser transmitter optical subassembly (TOSA) in a commercially-available TO-can packaging working in the 1310 nm band capable of digital transmission ...
Diseño de redes de acceso ópticas para comunicaciones 5G basadas en la generación fotónica de las señales de onda milimétrica

Gonzálvez Raga, Borja (Universitat Politècnica de València, 2021-10-11)

[ES] El proyecto consiste en comprender la arquitectura y tecnologías empleadas en las redes ópticas de acceso radio centralizadas (C-RAN) para comunicaciones 5G. Se utilizará la técnica fotónica basada en modulación ...
Dispersion supported BB84 quantum key distribution using phase modulated light

Mora Almerich, José; Ruiz Alba Gaya, Antonio; Amaya Ocampo, Waldimar Alexander; Capmany Francoy, José (Institute of Electrical and Electronics Engineers (IEEE), 2011-06)

We propose and experimentally demonstrate that, contrary to what was thought up to now, an efficient BB84 operation is feasible using the double phase modulator (PMPM) configuration in frequency-coded quantum key distribution ...
Dynamic Filtering of Microwave Signals Through Brillouin-Based Polarization-Sensitive Balanced Detection

Zoireff, Gustavo; Samaniego, Diego; Vidal Rodriguez, Borja (Institute of Electrical and Electronics Engineers, 2021-04)

[EN] A new photonic technique to implement both stopband and passband microwave filters is presented and demonstrated. The principle of operation relies on controlling the state of polarization of the band of interest using ...