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Listar por autor "Capmany Francoy, José"

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A monolithic integrated photonic microwave filter

Sanchez Fandiño, Javier Antonio; Muñoz Muñoz, Pascual; Doménech Gómez, José David; Capmany Francoy, José (Nature Publishing Group, 2017-02)

[EN] Meeting the increasing demand for capacity in wireless networks requires the harnessing of higher regions in the radiofrequency spectrum, reducing cell size, as well as more compact, agile and power-efficient base ...
All silicon waveguide spherical microcavity coupler device

Xifre Perez, Elisabet; Doménech Gómez, José David; Fenollosa Esteve, Roberto; Muñoz Muñoz, Pascual; Capmany Francoy, José; Meseguer Rico, Francisco Javier (Optical Society of America, 2011)

A coupler based on silicon spherical microcavities coupled to silicon waveguides for telecom wavelengths is presented. The light scattered by the microcavity is detected and analyzed as a function of the wavelength. The ...
Amplificación de la tasa de bit para distribución de clave cuántica basada en funciones hash criptográficas

Pradilla Ceron, Juan Vicente; Mora Almerich, José; Capmany Francoy, José (Sociedad Española de Óptica, 2013)

[EN] The security is a research area in a continuous evolving field and represents one of the most important perspective future lines in telecommunications. This work is focused on new techniques and methods employing ...
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 ...
Analog Programmable-Photonic Computation

Macho-Ortiz, Andrés; Pérez-López, Daniel; Azaña, José; Capmany Francoy, José (John Wiley & Sons, 2023-10)

[EN] The foundations of a new class of computation theory, termed Analog Programmable-Photonic Computation (APC), explicitly designed to unleash the full potential of programmable integrated photonic technology are presented. ...
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 formulation of directly modulated OOFDM signals transmitted over an IM/DD dispersive link

Sánchez Costa, Christian; Ortega Tamarit, Beatriz; Wei, J.L.; Tang, J.; Capmany Francoy, José (Optical Society of America: Open Access Journals, 2013-03-25)

We provide an analytical study on the propagation effects of a directly modulated OOFDM signal through a dispersive fiber and subsequent photo-detection. The analysis includes the effects of the laser operation point and ...
Analytical model and figures of merit for filtered Microwave photonic links

Gasulla Mestre, Ivana; Capmany Francoy, José (Optical Society of America, 2011)

The concept of filtered Microwave Photonic Links is proposed in order to provide the most general and versatile description of complex analog photonic systems. We develop a field propagation model where a global optical ...
Análisis de la distorsión armónica en filtros fotónicos de microondas

Rius Mercado, Manuel (Universitat Politècnica de València, 2013-07-12)

[ES] En este trabajo se presenta un análisis de la distorsión armónica en filtros fotónicos de microondas. Por una parte, se ha realizado un desarrollo teórico de la función de transferencia de filtros fotónicos de ...
Análisis de sistemas de generación y transporte de señales de MMW en sistemas RoF a 60 GHZ

Guamialama Narváez, Diego (Universitat Politècnica de València, 2013-11-09)

Este trabajo pretende analizar las funcionalidades y prestaciones de las técnicas más utilizadas para generar señales de microondas/milimétricas con el fin de identificar las más adecuadas que permitan generar señales en ...
Aplicaciones de las fibras ópticas multinúcleo a la fotónica de microondas

García Cortijo, Sergi (Universitat Politècnica de València, 2015-01-05)

El objetivo principal del presente documento es aplicar las fibras ópticas multinúcleo (MCFs) al campo de la fotónica de microondas (MWP). En primer lugar, se caracterizan las MCFs y se realiza un estudio de la diafonía ...
Aplicación de los amplificadores ópticos de semiconductor a la fotónica de microondas

Manzanedo Martínez, María Dolores (Universitat Politècnica de València, 2013-07-01)

Esta tesis se centra en el estudio de los fenómenos no lineales como la modulación cruzada de ganancia (XGM, cross gain modulation) y la modulación cruzada de fase (XPM, cross phase modulation) en amplificadores ópticos ...
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 ...
Application specific photonic integrated circuits through generic integration, a novel paradigm in photonics

Muñoz Muñoz, Pascual; Doménech Gómez, José David; Artundo Martínez, Iñigo; Habib, C.; Leijtens, X.J.M.; de Vries, T.; Robbins, David; Den Besten, Jan Hendrik; Chen, L.R.; Capmany Francoy, José (Instituto de Telecomunicaciones y Aplicaciones Multimedia (ITEAM)", 2011)

[EN] This paper reviews our recent work on integrating photonic devices and sub-systems onto a single photonic chip, by means of generic integration.
Arbitrary waveform generation in general-purpose photonic integrated circuits for LIDAR and RADAR operations (PICs).

Sola Polo, Jorge (Universitat Politècnica de València, 2021-07-19)

[ES] Los sistemas RADAR y LIDAR se benefician del uso de funciones arbitrarias de generación de formas de onda, un pulso de señal que exhibe formas arbitrarias en el tiempo. Este TFM se ocupa de la exploración de arquitecturas ...
Auto-routing algorithm for field-programmable photonic gate arrays

López-Hernández, Aitor; Pérez-López, Daniel; Dasmahapatra, Prometheus; Capmany Francoy, José (The Optical Society, 2020-01-06)

[EN] Programmable multipurpose photonic integrated circuits require software routines to make use of their flexible operation as desired. In this work, we propose and demonstrate the use of a modified tree-search algorithm ...
Broadband microwave photonic fully tunable filter using a single heterogeneously integrated III-V/SOI-microdisk-based phase shifter

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 ...
Broadband random optoelectronic oscillator

Ge, Zengting; Hao, Tengfei; Capmany Francoy, José; Li, Wei; Zhu, Ninghua; Li, Ming (Nature Publishing Group, 2020-11-12)

[EN] Random scattering of light in transmission media has attracted a great deal of attention in the field of photonics over the past few decades. An optoelectronic oscillator (OEO) is a microwave photonic system offering ...
Broadband true time delay for microwave signal processing, using slow light based on stimulated Brillouin scattering in optical fibers

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 ...