Search Results - "V. Velasco, Aitor"

Mid-Infrared Silicon-on-Insulator Fourier-Transform Spectrometer Chip by Nedeljkovic, Milos, Velasco, Aitor V., Khokhar, Ali Z., Delage, Andre, Cheben, Pavel, Mashanovich, Goran Z.

“…Mid-infrared absorption spectroscopy is highly relevant for a wide range of sensing applications. In this letter, we demonstrate a Fourier-transform…”
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Design of a Broadband Polarization Splitter Based on Anisotropy-Engineered Tilted Subwavelength Gratings by Herrero-Bermello, Alaine, Luque-Gonzalez, Jose Manuel, Velasco, Aitor V., Ortega-Monux, Alejandro, Cheben, Pavel, Halir, Robert

“…Polarization management is of paramount importance in integrated optics, particularly for highly birefringent photonic platforms such as silicon-on-insulator…”
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Experimental demonstration of a broadband mode converter and multiplexer based on subwavelength grating waveguides by González-Andrade, David, Dias, Antonio, Wangüemert-Pérez, J. Gonzalo, Ortega-Moñux, Alejandro, Molina-Fernández, Íñigo, Halir, Robert, Cheben, Pavel, V. Velasco, Aitor

“…•A broadband and compact mode converter and multiplexer is demonstrated.•The device is based on a subwavelength engineered multimode interference coupler.•The…”
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Brillouin filtering of optical combs for narrow linewidth frequency synthesis by Galindo-Santos, Juan, Velasco, Aitor V., Carrasco-Sanz, Ana, Corredera, Pedro

“…We report a tunable monochromatic source generation scheme, based on Brillouin filtering of a self-referenced optical frequency comb. The system benefits from…”
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High-Performance On-Chip Silicon Beamsplitter Based on Subwavelength Metamaterials for Enhanced Fabrication Tolerance by Fernández de Cabo, Raquel, González-Andrade, David, Cheben, Pavel, Velasco, Aitor V.

“…Efficient power splitting is a fundamental functionality in silicon photonic integrated circuits, but state-of-the-art power-division architectures are…”
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Ultracompact polarization converter with a dual subwavelength trench built in a silicon-on-insulator waveguide by Velasco, Aitor V, Calvo, María L, Cheben, Pavel, Ortega-Moñux, Alejandro, Schmid, Jens H, Ramos, Carlos Alonso, Fernandez, Iñigo Molina, Lapointe, Jean, Vachon, Martin, Janz, Siegfried, Xu, Dan-Xia

“…The design and fabrication of an ultracompact silicon-on-insulator polarization converter is reported. The polarization conversion with an extinction ratio of…”
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Design of an Athermal Interferometer Based on Tailored Subwavelength Metamaterials for On-Chip Microspectrometry by Korai, Umair A., Bermello, Alaine H., Strain, Michael J., Glesk, Ivan, Velasco, Aitor V.

“…Temperature dependence is one of the main challenges of the silicon-on-insulator platform due to the large thermo-optic coefficient of its core material. In…”
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Broadband mode exchanger based on subwavelength Y-junctions by Fernández de Cabo, Raquel, Sánchez-Sánchez, Alejandro, Yang, Yijun, Melati, Daniele, Alonso-Ramos, Carlos, Velasco, Aitor V., González-Andrade, David

“…Multimode silicon photonics, leveraging mode-division multiplexing technologies, offers significant potential to increase capacity of large-scale…”
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Experimental Demonstration of Low-Uncertainty Calibration Methods for Bragg Grating Interrogators by de Miguel, José Luis, Galindo-Santos, Juan, Pulido de Torres, Concepción, Salgado, Pedro, Velasco, Aitor V, Corredera, Pedro

“…In this paper we propose and demonstrate two alternative methods for the high-precision calibration of fiber Bragg grating (FBG) interrogators. The first…”
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Zero-Birefringence Silicon Waveguides Based on Tilted Subwavelength Metamaterials by Herrero-Bermello, Alaine, Luque-Gonzalez, Jose Manuel, Halir, Robert, Cheben, Pavel, Ortega-Monux, Alejandro, Molina-Fernandez, Inigo, Velasco, Aitor V.

“…Polarization independent silicon-on-insulator nanowires are highly sought after, due the inherent high birefringence of this material platform…”
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Demonstration of a curved sidewall grating demultiplexer on silicon by Bock, Przemek J, Cheben, Pavel, Schmid, Jens H, Velasco, Aitor V, Delâge, André, Janz, Siegfried, Xu, Dan-Xia, Lapointe, Jean, Hall, Trevor J, Calvo, María L

“…We experimentally demonstrate a new type of waveguide multiplexer device designed for silicon photonics, with a crosstalk level as low as -35 dB and an…”
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Experimental demonstration of metamaterial anisotropy engineering for broadband on-chip polarization beam splitting by Herrero-Bermello, Alaine, Dias-Ponte, Antonio, Luque-González, José Manuel, Ortega-Moñux, Alejandro, Velasco, Aitor V., Cheben, Pavel, Halir, Robert

“…Subwavelength metamaterials exhibit a strong anisotropy that can be leveraged to implement high-performance polarization handling devices in…”
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Low-Loss Directional Coupler for the C, L and U Bands Based on Subwavelength Gratings by Vilas, Jaime, Fernandez de Cabo, Raquel, Olivares, Irene, Gonzalez-Andrade, David, Velasco, Aitor V., Dias-Ponte, Antonio

“…Directional couplers are ubiquitous components for power distribution in silicon photonics integrated circuits. Despite significant advances in their…”
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Extending the spectral operation of multimode and polarization-independent power splitters through subwavelength nanotechnology by Fernández de Cabo, Raquel, González–Andrade, David, Cheben, Pavel, Velasco, Aitor V.

“…•This paper introduces a pioneering 3-dB power splitter based on a symmetric Y-junction, enhanced by two distinct subwavelength grating metamaterial geometries…”
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Experimental characterization of an ultra-broadband dual-mode symmetric Y–junction based on metamaterial waveguides by Fernández de Cabo, Raquel, Vilas, Jaime, Cheben, Pavel, V. Velasco, Aitor, González-Andrade, David

“…•Detailed experimental study that demonstrates the broadband performance and relaxed fabrication tolerances of an SWG-based Y–junction.•Fundamental…”
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Broadband three-mode converter and multiplexer based on cascaded symmetric Y-junctions and subwavelength engineered MMI and phase shifters by González-Andrade, David, Olivares, Irene, Fernández de Cabo, Raquel, Vilas, Jaime, Dias, Antonio, V. Velasco, Aitor

“…•A novel architecture to scale the number of modes of mode converters and multiplexers is proposed.•The device is based on cascaded symmetric Y-junctions and…”
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High-resolution Fourier-transform spectrometer chip with microphotonic silicon spiral waveguides by Velasco, Aitor V, Cheben, Pavel, Bock, Przemek J, Delâge, André, Schmid, Jens H, Lapointe, Jean, Janz, Siegfried, Calvo, María L, Xu, Dan-Xia, Florjańczyk, Mirosław, Vachon, Martin

“…We report a stationary Fourier-transform spectrometer chip implemented in silicon microphotonic waveguides. The device comprises an array of 32 Mach-Zehnder…”
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Mode Converter and Multiplexer With a Subwavelength Phase Shifter for Extended Broadband Operation by Gonzalez-Andrade, David, de Cabo, Raquel Fernandez, Vilas, Jaime, Olivares, Irene, Dias, Antonio, Luque-Gonzalez, Jose Manuel, Wanguemert-Perez, J. Gonzalo, Ortega-Monux, Alejandro, Molina-Fernandez, Inigo, Halir, Robert, Cheben, Pavel, Velasco, Aitor V.

“…On-chip mode converters and multiplexers are fundamental components to scale the capacity of silicon optical interconnects by using different spatial modes of…”
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Polarization- and wavelength-agnostic nanophotonic beam splitter by González-Andrade, David, Lafforgue, Christian, Durán-Valdeiglesias, Elena, Le Roux, Xavier, Berciano, Mathias, Cassan, Eric, Marris-Morini, Delphine, Velasco, Aitor V., Cheben, Pavel, Vivien, Laurent, Alonso-Ramos, Carlos

“…High-performance optical beam splitters are of fundamental importance for the development of advanced silicon photonics integrated circuits. However, due to…”
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Subwavelength grating Fourier-transform interferometer array in silicon-on-insulator by Bock, Przemek J., Cheben, Pavel, Velasco, Aitor V., Schmid, Jens H., Delâge, André, Florjańczyk, Mirosław, Lapointe, Jean, Xu, Dan-Xia, Vachon, Martin, Janz, Siegfried, Calvo, María L.

“…A planar waveguide Fourier‐transform spectrometer with densely arrayed Mach‐Zehnder interferometers is demonstrated. Subwavelength gratings are used to produce…”
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