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Browsing by Subject "Microwave photonics"

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Browsing by Subject "Microwave photonics"

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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 ...
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    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 ...
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    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 ...
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    Apodized Coupled Resonator Optical Waveguides: Theory, design and characterization 
    Doménech Gómez, José David (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 ...
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    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 ...
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    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 ...
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    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 ...
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    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 ...
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    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 ...
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    EAM-SOA millimeter-wave frequency up-converter for radio-over-fiber applications 
    Palací López, Jesús; Villanueva Ibáñez, Guillermo Eduardo; Herrera, J. (Elsevier, 2011-01-01)
    [EN] We present an optical scheme for photonic frequency up-conversion at the millimeter-wave bands based on Semiconductor Optical Amplifier. The proposed scheme modulates the bias current with the Intermediate Frequency ...
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    Experimental photonic generation of chirped pulses using nonlinear dispersion-based incoherent processing 
    Rius Mercado, Manuel; Bolea Boluda, Mario; Mora Almerich, José; Ortega Tamarit, Beatriz; Capmany Francoy, José (Optical Society of America: Open Access Journals, 2015-05-18)
    We experimentally demonstrate, for the first time, a chirped microwave pulses generator based on the processing of an incoherent optical signal by means of a nonlinear dispersive element. Different capabilities have been ...
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    Fiber Wireless Transmission of 8.3-Gb/s/ch QPSK-OFDM Signals in 75-110-GHz Band 
    Deng, Lei; Beltrán Ramírez, Marta; Pang, Xiaodan; Zhang, Xu; Arlunno, Valeria; Zhao, Ying; Caballero, Antonio; Dogadaev, Anton; Yu, Xianbin; Llorente Sáez, Roberto; Liu, Deming; Monroy, Idelfonso Tafur (Institute of Electrical and Electronics Engineers (IEEE), 2012-03)
    [EN] In this letter, we present a scalable high-speed W-band (75-110-GHz) fiber wireless communication system. By using an optical frequency comb generator, three-channel 8.3-Gb/s/ch optical orthogonal frequency-division ...
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    High performance low coherence interferometry using SSB modulation 
    Benítez-González, Jesús; Bolea Boluda, Mario; Mora Almerich, José (Institute of Electrical and Electronics Engineers, 2017)
    [EN] Low coherence interferometry (LCI) is an optical measurement technique that has attracted the interest for relevant fields like medicine or sensing. With the objective of improving LCI capabilities, microwave photonics ...
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    Impact of Third-Order Intermodulation on the Performance of Subcarrier Multiplexed Quantum Key Distribution 
    Capmany Francoy, José; Fernández Pousa, Carlos R. (Institute of Electrical and Electronics Engineers (IEEE), 2011)
    [EN] This paper extends the analysis presented in a previous contribution to account for the effect of third-order intermodulation distortion in the system quantum bit error rate attainable in subcarrier multiplexed quantum ...
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    Integrated Microwave Photonics 
    Marpaung, David; Roeloffzen, Chris; Heideman, René; Leinse, Arne; Sales Maicas, Salvador; Capmany Francoy, José (Wiley-VCH Verlag, 2013-07)
    [EN] Microwave photonics (MWP) is an emerging field in which radio frequency (RF) signals are generated, distributed, processed and analyzed using the strength of photonic techniques. It is a technology that enables various ...
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    Integrated Microwave Photonics for Radio Access Networks 
    Capmany Francoy, José; Muñoz Muñoz, Pascual (Institute of Electrical and Electronics Engineers, 2014)
    [EN] We explore the advantages that integrated microwave photonics (IMWP) can bring to access networks. We first of all review the most common architectures of radio access networks (RANs) to identify the segments where ...
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    Integrated Optical Filters for Microwave Photonic Applications 
    Sánchez Fandiño, Javier Antonio (2016-07-18)
    [EN] Microwave photonics (MWP) is a well-established research field that investigates the use of photonic technologies to generate, distribute, process and analyze RF waveforms in the optical domain. Despite its great ...
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    Microwave Photonics Filtering Interrogation Technique Under Coherent Regime For Hot Spot Detection on a Weak FBGs Array 
    Hervás-Peralta, Javier; Barrera Vilar, David; Madrigal-Madrigal, Javier; Sales Maicas, Salvador (Institute of Electrical and Electronics Engineers, 2018)
    [EN] An interrogation technique of cascaded FBG sensors based on a microwave photonics filtering technique under coherent regime is presented. The sensing information of a 5-m fiber coil containing 500 weak FBG with a ...
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    Microwave Photonics Parallel Quantum Key Distribution 
    Ruiz Alba Gaya, Antonio; Mora Almerich, José; Amaya Ocampo, Waldimar Alexander; Martínez García, Alfonso; García Muñoz, Víctor; Calvo Díaz-Aldagalán, David; Capmany Francoy, José (Institute of Electrical and Electronics Engineers (IEEE), 2012-06)
    The incorporation of multiplexing techniques used in microwave photonics to quantum key distribution (QKD) systems brings important advantages by enabling the simultaneous and parallel delivery of multiple keys between a ...
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    Microwave photonics: Harnessing slow light 
    Capmany Francoy, José; Gasulla Mestre, Ivana; Sales Maicas, Salvador (Nature Publishing Group, 2011-12)
    Slow-light techniques originally conceived for buffering high-speed digital optical signals now look set to play an important role in providing broadband phase and true time delays for microwave signals.