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Browsing by Subject "Nonlinear optics"

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Browsing by Subject "Nonlinear optics"

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    Birefringence effects in multi-core fiber: coupled local-mode theory 
    Macho-Ortiz, Andrés; García Meca, Carlos; Fraile-Peláez, F. Javier; Morant Pérez, María; Llorente Sáez, Roberto (Optical Society of America, 2016-09-19)
    In this paper, we evaluate experimentally and model theoretically the intra- and inter-core crosstalk between the polarized core modes in single-mode multi-core fiber media including temporal and longitudinal birefringent ...
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    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 ...
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    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 ...
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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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    Characterization of different regimes in nonlinear liquid crystal models 
    Orquín Serrano, Ismael; Villatoro Machuca, F.R.; Ferrando Cogollos, Albert; Fernández de Córdoba, Pedro; Michinel, H. (WORLD SCIENTIFIC PUBL CO PTE LTD, 2012-09)
    [EN] The range of validity of two models for nonlocal nonlinear optics in Nematic Liquid Crystals (NLC) is studied. Particularly the influence of the optical power and the initial position of the beam over its trajectory ...
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    Design and fabrication of customized fiber gratings to improve the interrogation of optical fiber sensors 
    Ricchiuti, Amelia Lavinia (Universitat Politècnica de València, 2016-06-23)
    [EN] Fiber grating sensors and devices have demonstrated outstanding capabilities in both telecommunications and sensing areas, due to their well-known advantageous characteristics. Therefore, one of the most important ...
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    Experimental evaluation of nonlinear crosstalk in multi-core fiber 
    Macho Ortiz, Andrés; Morant Pérez, María; Llorente Sáez, Roberto (Optical Society of America, 2015-07-13)
    In this paper we evaluate experimentally and model theoretically the nonlinear crosstalk random process in multi-core fiber. The experimental results indicate that mode coupling in multi-core fibers is reduced in presence ...
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    High nonlinear figure-of-merit amorphous silicon waveguides 
    Matres Abril, Joaquín; Ballesteros García, Guillem; Gautier, Pauline; Fedeli, J.M.; Martí Sendra, Javier; Oton Nieto, Claudio José (Optical Society of America: Open Access Journals, 2013-02-25)
    The nonlinear response of amorphous silicon waveguides is reported and compared to silicon-on-insulator (SOI) samples. The real part of the nonlinear coefficient gamma is measured by four-wave-mixing and the imaginary part ...
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    Linear and nonlinear optical properties of carbon nanotube-coated single-mode optical fiber gratings 
    Villanueva Ibáñez, Guillermo Eduardo; Jakubinek, M.B.; Simard, B.; Oton Nieto, Claudio José; Matres Abril, Joaquín; Shao, L.Y.; Pérez Millán, Pedro; Albert, J. (Optical Society of America, 2011)
    [EN] Single-wall carbon nanotube deposition on the cladding of optical fibers has been carried out to fabricate an all-fiber nonlinear device. Two different nanotube deposition techniques were studied. The first consisted ...
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    Modeling nonlinear waves in photonics, plasmonics and cold atoms 
    Ferrando, A; Milián Enrique, Carles; Ceballos Herrera, Daniel Enrique; González, Noe; Orquín Serrano, Ismael; García March, Miguel Ángel; Zacarés, M.; Monreal Mengual, Llúcia; Isidro San Juan, José María; Fernández de Córdoba Castellá, Pedro José (Sociedad Española de Óptica, 2011)
    [EN] We review the present status of the different lines of research in the area of Photonics at the Interdisciplinary Modeling Group, InterTech (www.intertech.upv.es) paying special attention to new topics that we have ...
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    Nonlinear focusing of ultrasonic waves by an axisymmetric diffraction grating embedded in water 
    Jimenez, Noe; Romero García, Vicente; Picó Vila, Rubén; García-Raffi, L. M.; Staliünas, Kestutis (American Institute of Physics (AIP), 2015-11-16)
    We report the nonlinear focusing of ultrasonic waves by an axisymmetric diffraction grating immersed in water. In the linear regime, the system presents high focal gain (32 dB), with a narrow beam-width and intense side ...
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    Optical phase characterization of photonic integrated devices 
    Matres Abril, Joaquín; Ballesteros García, Guillem; Mas Gómez, Sara María; Brimont, Antoine Christian Jacques; Sanchis Kilders, Pablo; Martí Sendra, Javier; Oton Nieto, Claudio José (Institute of Electrical and Electronics Engineers (IEEE), 2014-07)
    We propose a relatively simple experimental setup, capable of accurately characterizing the optical phase response of an integrated photonic circuit. The setup is based on a phase-noise reduction scheme using an external ...
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    Reconfigurable Activation Functions in Integrated Optical Neural Networks 
    Rausell-Campo, Jose Roberto; Pérez-López, Daniel (Institute of Electrical and Electronics Engineers, 2022-07)
    [EN] The implementation of nonlinear activation functions is one of the key challenges that optical neural networks face. To the date, different approaches have been proposed, including switching to digital implementations, ...
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    Silicon slow-light-based photonic mixer for microwave-frequencyconversion applications 
    Gutiérrez Campo, Ana María; Brimont, Antoine Christian Jacques; Herrera Llorente, Javier; Aamer, Mariam; Martí Sendra, Javier; Thomson, D. J.; Gardes, F. Y.; Reed, G. T.; Fedeli, J. M.; Sanchis Kilders, Pablo (Optical Society of America, 2012)
    [EN] We describe and demonstrate experimentally a method for photonic mixing of microwave signals by using a silicon electro-optical Mach¿Zehnder modulator enhanced via slow-light propagation. Slow light with a group index ...
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    Supercontinuum optimization for dual-soliton based light sources using genetic algorithms in a grid platform 
    Arteaga Sierra, Francisco Rodrigo; Milián Enrique, Carles; Torres-Gómez, I.; Torres-Cisneros, M.; Moltó, Germán; Ferrando Cogollos, Albert (Optical Society of America, 2014-09-22)
    We present a numerical strategy to design fiber based dual pulse light sources exhibiting two predefined spectral peaks in the anomalous group velocity dispersion regime. The frequency conversion is based on the soliton ...
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    Terahertz Radiation Shaping Based on Third-Order Dispersion and Self-Phase Modulation in Standard Single-Mode Optical Fiber 
    Palací López, Jesús; Vidal Rodriguez, Borja (Springer Verlag (Germany), 2012-06)
    Third-order dispersion and self-phase modulation in standard single-mode fibers are employed in a fiber-based THz time domain spectroscopy system for radiation shaping. Ultra-short optical pulses are converted into trains ...
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    UWB Doublet Generation Employing Cross-Phase Modulation in a Semiconductor Optical Amplifier Mach Zehnder Interferometer 
    Moreno, Vanessa; Rius Mercado, Manuel; Mora Almerich, José; Muriel, M.A.; Capmany Francoy, José (Institute of Electrical and Electronics Engineers (IEEE): OAJ, 2013-12)
    In this paper, a novel method to generate ultrawideband (UWB) doublets is proposed and experimentally demonstrated, which is based on exploiting the cross-phase modulation in a semiconductor optical amplifier (SOA). The ...