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Listar por autor "Ortega-Moñux, Alejandro"
Mostrando ítems 41-60 de 72
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Metamaterial engineered C+L band 90º hybrid with 150 nm feature size
Hadij-El-Houati, Abdelfettah; Halir, Robert; Ortega-Moñux, Alejandro; Wanguemert-Pérez, Juan Gonzalo; Podmore, Hugh; Schmid, Jens H.; Cheben, Pavel; Molina-Fernández, Íñigo[et al.] (2020-09-28)90º hybrids are important components for coherent optical communications. Conventional implementations only cover the C band, while broadband, metamaterial-based devices require sub-100nm feature sizes. We propose a ... -
Mid-infrared Suspended Waveguide Platform and Building Blocks
Wanguemert-Pérez, Juan Gonzalo; Sánchez-Postigo, Alejandro; Soler-Penades, Jordi; Ortega-Moñux, Alejandro; Nedeljkovic, Milos; Halir, Robert; El Mokhtari Mimun, Faysal; Cheng, Y.X.; Qu, Z; Khokhar, A.Z.; Osman, A.; Cao, Wei; Litteljohns, C.G.; Cheben, Pavel; Mashanovich, G.Z.; Molina-Fernández, Íñigo[et al.] (2018-06-05)In this work we present our recent progress in the development of a platform for the mid-infrared wavelength range, based on suspended silicon waveguide with subwavelength metamaterial cladding. The platform has some ... -
Modelado de ruido de una cámara para lectura de biosensores fotónicos multiplexados.
Pérez-Sánchez, Laura; Sánchez-Ramírez, Ana; De-Oliva-Rubio, José; Leuermann, Jonas; Halir, Robert; Ortega-Moñux, Alejandro; Wanguemert-Pérez, Juan Gonzalo; Molina-Fernández, Íñigo[et al.] (2023)Los biosensores fotónicos basados en arquitecturas interferométricas de Mach-Zehnder con lectura de fase coherente han demostrado ser idóneos para la implementación de dispositivos de diagnóstico compactos, de bajo coste ... -
Nuevos esquemas de recepción coherente multipuerto para comunicaciones ópticas
Reyes-Iglesias, Pedro José (Servicio de Publicaciones y Divulgación Científica, 2015)Los objetivos de esta Tesis se centran en el estudio y evaluación numérica de nuevos esquemas de recepción coherente multipuerto de sistemas de comunicación por fibra óptica. Se ha desarrollado y validado una herramienta ... -
On-Chip Metamaterial Antenna Array with Distributed Bragg Deflector for Generation of Collimated Steerable Beams
Ginel-Moreno, Pablo; Hadij-El-Houati, Abdelfettah; Sánchez-Postigo, Alejandro; Wanguemert-Pérez, Juan Gonzalo; Molina-Fernández, Íñigo; Schmid, Jens H.; Cheben, Pavel; Ortega-Moñux, Alejandro[et al.] (WILEY, 2022-07-03)The generation of collimated steerable beams of light is a fundamental function in optics needed in many applications, including free-space optical communications, remote sensing, and light detection and ranging. Implementing ... -
Photonic chip interconnects and integrated polarization management for coherent communication
Alonso-Ramos, C. (Universidad de Málaga, Servicio de Publicaciones y Divulgación Científica, 2014)En este trabajo se han expuesto diversas aportaciones originales, entre las que cabe destacar el desarrollo de redes de difracción eficientes para el acoplo chip-fibra, el diseño de rotadores de polarización integrados de ... -
Polarization independent 2×2 multimode interference coupler with bricked subwavelength metamaterial
Pérez-Armenta, Carlos; Ortega-Moñux, Alejandro; Luque-González, José Manuel; Halir, Robert; Reyes Iglesias, Pedro José; Schmid, Jens H.; Cheben, Pavel; Molina-Fernández, Íñigo; Wanguemert-Pérez, Juan Gonzalo[et al.] (2022)The silicon-on-insulator (SOI) platform enables high integration density in photonic integrated circuits while maintaining compatibility with CMOS fabrication processes. Nevertheless, its inherently high modal birefringence ... -
Polarization insensitive metamaterial engineered multimode interference coupler in a 220 nm silicon-on-insulator platform
Pérez-Armenta, Carlos; Ortega-Moñux, Alejandro; Luque-González, José Manuel; Halir, Robert; Schmid, Jens; Cheben, Pavel; Molina-Fernández, Íñigo; Wanguemert-Pérez, Juan Gonzalo[et al.] (Elsevier, 2023)High-index contrast silicon waveguides exhibit strong birefringence that hinders the development of polarization-insensitive devices, especially for sub-micrometer silicon layer thickness. Here a polarizationindependent 2 ... -
Polarization management for coherent optical receivers
Halir, Robert; Ortega-Moñux, Alejandro; Pérez-Galacho, Diego; Alonso-Ramos, C.; Ruiyong, Zhang; Reyes-Iglesias, Pedro José; Romero-García, Sebastián; Godoy-Rubio, Rafael; Wanguemert-Pérez, Juan Gonzalo; Molina-Fernández, Íñigo; Runge, Patrick[et al.] (2014-06-03)The constant growth of bandwidth requirements in optical communication networks has prompted the evolution from conventional on-off-keying (OOK) transmission techniques to coherent, polarization multiplexed schemes. The ... -
Polarization-insensitive multimode interference coupler based on bricked subwavelength gratings
Pérez-Armenta, Carlos; Ortega-Moñux, Alejandro; Luque-González, José Manuel; Halir, Robert; Reyes Iglesias, Pedro José; Schmid, Jens H.; Cheben, Pavel; Molina-Fernández, Íñigo; Wanguemert-Pérez, Juan Gonzalo[et al.] (2022)The recently proposed bricked patterning enables enhanced performance in integrated photonics devices based on subwavelength gratings, including polarization insensitivity. We report on the design of a polarization-agnostic ... -
Re-inventing Multimode Interference Couplers Using Subwavelength Gratings
Ortega-Moñux, Alejandro; Halir, Robert; Maese Novo, Alejandro; Alonso-Ramos, C.; Zavargo-Peche, Luis; Pérez-Galacho, Diego; Molina-Fernández, Íñigo; Wanguemert-Pérez, Juan Gonzalo; Cheben, Pavel; Schmid, Jens H.; Lapointe, J.; Xu, Dan-Xia; Janz, Siegfried[et al.] (European Physical Society, IEEE, The Optical Society, 2013)We use the concept of subwavelength grating (SWG) refractive-index-engineering to propose and experimentally demonstrate a reduced size, slotted 2x2 MMI coupler. We also present an ultra-broadband 2x2 MMI coupler which ... -
Recent progress in subwavelength grating metamaterial engineered silicon photonic devices.
Wanguemert-Pérez, Juan Gonzalo; Pérez-Armenta, Carlos; Ginel-Moreno, Pablo; Luque-González, José Manuel; Hadij-El-Houati, Abdelfettah; Sánchez-Postigo, Alejandro; De-Oliva-Rubio, José; Ortega-Moñux, Alejandro; Halir, Robert; Schmid, Jens H.; Cheben, Pavel; Molina-Fernández, Íñigo[et al.] (2023)In this talk we present our recent advances in SWG metamaterial engineering. We will show a 1D-optical phased array composed of 112 evanescent-coupled surface emitting antennas with a length of 1.5 mm and fed by a compact ... -
Receptor coherente integrado ‘colorless’ de gran margen dinámico basado en un acoplador a 120º
Un receptor ‘colorless’ requerirá en su banda de operación de un elevado rechazo en modo común CMRR para reducir eficientemente la interferencia en banda base ocasionada por los canales colindantes al detectado y conseguir ... -
Robust and tunable integrated polarization rotator
Alonso-Ramos, C.; Halir, Robert; Ortega-Moñux, Alejandro; Cheben, Pavel; Vivien, Laurent; Molina-Fernández, Íñigo; Marris-Morini, Delphine; Janz, Siegfried; Xu, Dan-Xia; Schmid, Jens H.[et al.] (2014-03-11)Integrated polarization rotators suffer from very high sensitivity to fabrication errors. A polarization rotator scheme that substantially increases fabrication tolerances is proposed. In the proposed scheme, two tunable ... -
Separador de polarización integrado de altas prestaciones basado en estructuras sub-longitud de onda
Luque-González, José Manuel; Herrero-Bermello, Alaine; Ortega-Moñux, Alejandro; Sánchez-Rodriguez, Marina; Velasco, Aitor V.; Schmid, Jens H.; Cheben, Pavel; Molina-Fernández, Íñigo; Halir, Robert[et al.] (2020-12-03)Polarization management is a key factor in photonics integration platforms with high birefringence such as Silicon-On- Insulator. Here we design a directional coupler polarization beam splitter composed of two subwavelength ... -
Silicon high performance devices using subwavelength structures
Halir, Robert; Sánchez-Postigo, Alejandro; Luque-González, José Manuel; Herrero-Bermello, Alaine; Leuermann, Jonas; Ortega-Moñux, Alejandro; Wanguemert-Pérez, Juan Gonzalo; Velasco, Aitor V.; De-Oliva-Rubio, José; Schmid, Jens H.; Cheben, Pavel; Soler-Penades, Jordi; Nedeljkovic, Milos; Mashanovich, Goran Z.; Molina-Fernández, Íñigo[et al.] (2019-03-13)Silicon photonics is poised to solve challenges in areas such as datacom, environmental monitoring and diagnostics, by leveraging the economies of scale afforded by CMOS manufacturing. This requires a wide variety of ... -
Silicon Photonic Bragg Grating Structures for Spectral Filtering.
Ortega-Moñux, Alejandro; Fernández Hinestrosa, Alejandro; Pérez Armenta, Carlos; Luque González, José Manuel; Sánchez-Postigo, Alejandro; Pereira-Martín, Daniel; Wanguemert-Pérez, Juan Gonzalo; Halir, Robert; Hadij-ElHouati, Abdelfettah; Cheben, Pavel; Schmid, Jens H.; Milanizadeh, M.; Wang, Shurui; Mackay, Kevan K.; Ye, Winnie N.; Molina-Fernández, Íñigo[et al.] (2024)Integrated optical filters play a key role in modern optical systems, finding extensive applications in quantum optics, biosensing, programmable photonics, and telecommunications. Among the most commonly used structures ... -
Silicon-on-insulator polarization controller with relaxed fabrication tolerances
Sarmiento-Merenguel, Jose Darío; Alonso-Ramos, C.; Halir, Robert; Vivien, Laurent; Cheben, Pavel; Ortega-Moñux, Alejandro; Molina-Fernández, Íñigo; Leroux, X.; Marris-Morini, Delphine; Xu, Dan-Xia; Schmid, Jens H.; Janz, Siegfried[et al.] (2014-07-31)Polarization control is essential in applications ranging from optical communications to interferometric sensors. The implementation of in- tegrated polarization controllers is challenging as they require polariza- tion ... -
Subwavelength gratings for sensing and polarization management
Wanguemert-Pérez, Juan Gonzalo; Cheben, Pavel; Ortega-Moñux, Alejandro; Pérez-Galacho, Diego; Alonso-Ramos, C.; Halir, Robert; Molina-Fernández, Íñigo; Xu, Dan-Xia; Schmid, Jens H.[et al.] (2014-05-12)Sub-wavelength grating (SWGs) structures are becoming important building blocks in planar waveguide photonic devices [1]. SWG structures have been successfully applied in the design of a range of devices with remarkable ...