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Listar por autor "Ortega Tamarit, Beatriz"

Mostrando ítems 1-20 de 112

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64-QAM LTE signal transmission at 25 GHz over hybrid SSMF and non-uniform turbulent FSO channel

Vallejo-Castro, Luis; Ortega Tamarit, Beatriz; Nguyen, Dong-Nhat; Bohata, Jan; Zvanovec, Stanislav (IEEE, 2020-11-25)

[EN] This contribution describes the impact of non uniform thermal-induced turbulence on 64-QAM LTE signal transmission at 25 GHz millimeter wave (mmW) signal along hybrid RoF/RoFSO links. Microwave photonic signal generation ...
Adhesive assisted fabrication of chirped POF Bragg grating

Min, Rui; Pereira, Luis; Paixao, Tiago; Woyessa, Getinet; André, Paulo; Bang, Ole; Frizera, Anselmo; Antunes, Paulo; Pinto, Joao; Li, Zhaohui; Ortega Tamarit, Beatriz; Marques, Carlos (SPIE, 2020-04-10)

[EN] FBG in polymer optical fibers (POFs) is a promising technology for a wide range of sensing applications due to a lower Young¿s modulus and a large range of applying strain. Furthermore, POFs have several properties ...
Amplificador óptico eficiente basado en fibras de doble cubierta dopadas con Er/Yb

Albero Gran, Álvaro (Universitat Politècnica de València, 2017-12-02)

In this document the work done in the implementation of an optical fiber amplifier, specifically one of doped fiber with Erbium and Ytterbium is presented, as well as all the measurements done for its characterization. ...
Analysis and viability of WDM Technology in POF Access networks

Piñera Buendía, Pedro (Universitat Politècnica de València, 2015-01-30)

En este TFG analizaremos la viabilidad de implementar un sistema WDM en redes de acceso, en concreto en una red de interior del hogar, eligiendo como medio de transmisión fibras de núcleo de plástico. Para abordarlo ...
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 ...
Análisis y Diseño de un sistema de interferometría de baja coherencia para aplicaciones OCT

Sedjar, Mahmoud (Universitat Politècnica de València, 2017-05-03)

In this work, microwave and RF photonic systems will be studied and their applications to biomedical engineering. A software application will be programmed in order to design a system for tissue analysis in terms of different ...
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 ...
Aplicación del método de las DFDT a la simulación de dispositivos ópticos

Francés Monllor, Jorge (Universitat Politècnica de València, 2011-11-15)

[ES] La aplicación de las diferencias finitas en el dominio del tiempo (DFDT) para la simulación de dispositivos ópticos. En el rango de las longitudes de onda ópticas, la aplicación del método de las DFDT ha exigido un ...
Asignación de longitudes de onda

Ortega Tamarit, Beatriz (Universitat Politècnica de València, 2013-06-06)

El objetivo de este Laboratorio es mostrar al alumno el grafo del conjunto de rutas en una red optica, y a partir de el, resolver la asignacion de longitudes de onda mediante diferentes algoritmos de orden y seleccion.
Asymmetric hybrid full-duplex POF-based VLC transmission links

Apolo-Gonzaga, Juan Andres; Teli, Shivani Rajendra; Guerra-Yánez, Carlos; Almenar Terre, Vicenç; Ortega Tamarit, Beatriz; Zvánovec, Stanislav (Elsevier, 2023-05)

[EN] This paper presents an asymmetric full-duplex solution based on visible light communications (VLC) for indoor wired and wireless hybrid signal transmission. The signal is distributed by a polymer optical fiber (POF) ...
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 ...
Bragg Grating Inscription With Low Pulse Energy in Doped Microstructured Polymer Optical Fibers

Min, Rui; Ortega Tamarit, Beatriz; Nielsen, K.; Bang, Ole; Marques, Carlos (Institute of Electrical and Electronics Engineers (IEEE), 2018-05)

[EN] We demonstrate that fiber Bragg gratings (FBGs) can be written in a doped polymer optical fiber (POF) in a low ultraviolet (UV) pulse energy regime (60 ¿J/pulse) using a 248-nm krypton fluoride excimer laser system. ...
Bragg Gratings Inscribed in Solid-Core Microstructured Single-Mode Polymer Optical Fiber Drawn From a 3D-Printed Polycarbonate Preform

Zubel, Michal G.; Fasano, Andrea; Woyessa, Getinet Taffesse; Min, Rui; Leal-Junior, Arnaldo Gomes; Theodosiou, Antreas; Marques, Carlos A. F.; Rasmussen, Henrik K.; Bang, Ole; Ortega Tamarit, Beatriz; Kalli, Kyriacos; Frizera-Neto, Anselmo; Pontes, Maria Jose; Sugden, Kate (Institute of Electrical and Electronics Engineers, 2020-11-01)

[EN] This paper reports the first microstructured solid-core fiber drawn from a 3D-printed preform and the first fiber Bragg gratings inscribed in a fiber of this type. The presented fiber is made of polycarbonate and ...
Bragg Gratings Inscription in TS-Doped PMMA POF by Using 248-nm KrF Pulses

Min, Rui; Ortega Tamarit, Beatriz; Hu, Xuehao; Broadway, Christian; Caucheteur, Christophe; Pun, Chi-Fung Jeff; Tam, Hwa-Yaw; Antunes, Paulo; Marques, Carlos (Institute of Electrical and Electronics Engineers, 2018-09-15)

[EN] We demonstrate the Bragg gratings inscription in the 850-nm spectral region by using trans-4-stilbenemethanol-doped poly methyl methacrylate step-index optical fiber and a 248-nm krypton fluoride (KrF) excimer laser ...
Broadband optical sources for low-cost WDM-MB-OFDM networks

Chicharro López, Francisco Israel; Ortega Tamarit, Beatriz; Diego Antón, María de; Mora Almerich, José (Institute of Electrical and Electronics Engineers, 2017)

[EN] Multiband OFDM signal transmission through a 10 km optical fiber link is experimentally demonstrated by using a broadband source. We propose the use of optical broadband sources in multiband OFDM signal transmitters ...
Centralized full-duplex seamless photonic mmW fronthaul link based on phase modulation

Bohata, J.; Botella-Campos, Marta; Mora Almerich, José; Ortega Tamarit, Beatriz; Zvanovec, S. (The Optical Society, 2024-06)

[EN] We experimentally demonstrate a photonic full-duplex seamless millimeter wave fronthaul link, based on phase modulation, to address the challenges arising from the increased demands on the mobile fronthaul capacity ...
Centralized transmission techniques for full-duplex reconfigurable WDM optical access networks

GRASSI MARANGIONE, FULVIO (Universitat Politècnica de València, 2013-12-16)

This Thesis investigates and develops novel bidirectional and reconfigurable optical access architectures based on WDM technology with the aim of solving the problem of cost and complexity associated to the WDM-PON ...
Chirped POF Bragg grating production utilizing UV cure adhesive coating for multiparameter sensing

Min, Rui; Pereira, Luis; Paixao, Tiago; Woyessa, Getinet; Hu, Xuehao; Antunes, Paulo; André, Paulo; Bang, Ole; Pinto, João; Ortega Tamarit, Beatriz; Marques, Carlos (Elsevier, 2021-09)

[EN] In this work, we obtained chirped Bragg gratings by post-coating uniform poly (methylmethacrylate) (PMMA) microstructured polymer optical fiber Bragg gratings (POFBGs) with an UV cure adhesive. The main advantage of ...
Compact multichannel demultiplexer for WDM-POF networks based on spatially overlapped FBGs

Sáez-Rodríguez, D; Nielsen, K; Bang, O.; Ortega Tamarit, Beatriz (Institution of Electrical Engineers, 2016)

[EN] The fabrication of spatially overlapped fibre Bragg gratings over microstructured polymer optical fibre allows to demonstrate low-cost and compact multichannel wavelength division demultiplexers. Coarse and dense ...
Comparison of carrier suppressed and quadrature bias point external modulation for 40 GHz millimeter-wave photonic generation using a 16-QAM signal with directly modulated laser

Vallejo-Castro, Luis; Ortega Tamarit, Beatriz; Nguyen, Dong-Nhat; Bohata, Jan; Zvanovec, Stanislav; Almenar Terre, Vicenç (IEEE, 2020-07-22)

[EN] A directly modulated laser usage is proposed for 16-QAM signal transmission over hybrid optical links using two optical frequency multiplication schemes based on external modulation for 40 GHz millimeter-wave (mmW) ...