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Listar por autor "Mengual Chulia, Teresa"

Mostrando ítems 1-12 de 12

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 ...
High-efficiency grating coupler for an ultralow-loss Si3N4-based platform

Chmielak, B.; Suckow, S.; Parra Gómez, Jorge; Duarte, V. C.; Mengual Chulia, Teresa; Piqueras Ruipérez, Miguel Ángel; Giesecke, A. L.; Lemme, M. C.; Sanchis Kilders, Pablo (The Optical Society, 2022-05-15)

[EN] Integrated silicon nitride waveguides of 100¿nm height can achieve ultralow propagation losses below 0.1¿dB/cm at the 1550¿nm wavelength band but lack the scattering strength to form efficient grating couplers. An ...
Optical Beamforming Network based on Fiber Optical Delay Lines and Spatial Light Modulators for Large Antenna Arrays

Vidal Rodriguez, Borja; Mengual Chulia, Teresa; Ibáñez-López, Cristina; Martí Sendra, Javier (Institute of Electrical and Electronics Engineers, 2006-12-15)

[EN] An optical beamformer for antenna arrays based on fiber-optical delay lines for feeding subarrays and spatial light modulators to change the radio-frequency phase of independent antenna elements is proposed. The ...
Optical fiber-to-chip assembly process for ultra-low loss photonic devices based on silicon nitride for space applications

Brimont, Antoine Christian Jacques; Zurita Herranz, David; Duarte, V. C.; Mengual, T.; Chmielak, B.; Suckow, S.; Giesecke, A.; PIQUERAS RUIPÉREZ, MIGUEL ÁNGEL; Sanchis Kilders, Pablo (2020-06-24)

[EN] In this work, we demonstrate an efficient fiber array-to-chip assembly process with a high number of input/output ports. The proposed approach is based on using a pre-alignment coupling structure to separately align the ...
Optical frequency drift measurement using a birefringent medium and a polarimeter

Mengual Chulia, Teresa; Vidal Rodriguez, Borja; Martí Sendra, Javier (Institution of Electrical Engineers, 2007-12-06)

[EN] A simple technique to measure the frequency drift of monochromatic optical sources based on the polarisation change caused by a birefringent material is demonstrated. Preliminary experimental results show a resolution ...
Optical Phase-based Beamformer using MZM SSB Modulation combined with Crystal Polarization Optics and a Spatial Light Modulator

Mengual Chulia, Teresa; Vidal Rodriguez, Borja; Stoltidou, Chr.; Blanch, S.; Martí Sendra, Javier; Jofre, L.; McKenzie, I.; del Cura, J.M. (Elsevier, 2008-01-15)

[EN] The performance of a widely tunable phase-based beamformer for phased array antennas using a new technique to cross-polarized the carrier and the sideband, in order to allow the phase control by means of a spatial ...
Optically Beamformed Wideband Array Performance

Jofre, Lluis; Stoltidou, Chrysavgi; Blanch, Sebastián; Mengual Chulia, Teresa; Vidal Rodriguez, Borja; Martí Sendra, Javier; McKenzie, Iain; del Cura, J.M. (Institute of Electrical and Electronics Engineers, 2008-06)

[EN] Optical beamforming networks (OBFNs) are an interesting alternative for the design of wideband antenna arrays, mainly due to their low losses and weight, their high parallel processing capabilities and their electromagnetic ...
Photonic RF Frequency Measurement Combining SSB-SC Modulation and Birefringence

Mengual Chulia, Teresa; Vidal Rodriguez, Borja; Martí Sendra, Javier (Elsevier, 2010-07-01)

[EN] A new technique to instantaneously measure microwave frequency and amplitude is presented and experimentally demonstrated. The architecture described is based on a single sideband modulation with suppressed carrier ...
Photonic Technique for the Measurement of Frequency and Power of Multiple Microwave Signals

Vidal Rodriguez, Borja; Mengual Chulia, Teresa; Martí Sendra, Javier (Institute of Electrical and Electronics Engineers, 2010-11)

[EN] An optical approach to simultaneously measure the frequency and power of several microwave signals is presented and demonstrated. The system is based on the processing of an inter-ferogram generated by integrating the ...
Simplified WDM Optical Beamforming Network for Large Antenna Arrays

Vidal Rodriguez, Borja; Mengual Chulia, Teresa; Ibáñez-López, Cristina; Martí Sendra, Javier; McKenzie, Iain; Vez, Emilio; Santamaría, Javier; Dalmases, Francesc; Jofre, Lluis (Institute of Electrical and Electronics Engineers, 2006-05-16)

[EN] A novel approach to simplify optical beamforming networks based on wavelength-division-multiplexing (WDM) optical sources and a dispersive medium is proposed. The technique relies on the combination of dispersive and ...
WDM Photonic Microwave Filter with Variable Cosine Windowing based on a DGD Module

Vidal Rodriguez, Borja; Mengual Chulia, Teresa; Ibáñez-López, Cristina; Martí Sendra, Javier (Institute of Electrical and Electronics Engineers, 2006-11-01)

[EN] A simple method for windowing the response of wavelength-division-multiplexing photonic microwave transversal filters based on one differential-group-delay module is proposed. The technique allows the reconfiguration ...
Wide-Band Nulling System for Antenna Array based on a Photonic Microwave Filter and Optical Delay Lines

Mengual Chulia, Teresa; Vidal Rodriguez, Borja; Martí Sendra, Javier (Elsevier, 2009-10-01)

[EN] A nulling system for phased array antennas with broad bandwidth and reduced complexity is presented. The system is based on combining the output of an optical beamforming network with an optical transversal filter ...