Listar IC - Contribuciones a congresos científicos por autor "Sánchez-Postigo, Alejandro"
Mostrando ítems 1-20 de 29
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Automatic design of high-performance fiber-chip surface grating couplers based on Floquet-Bloch mode analysis
Sánchez-Postigo, Alejandro; Xu, Dan-Xia; Hadij-El-Houati, Abdelfettah; Molina-Fernández, Íñigo
; Ortega-Moñux, Alejandro; Wanguemert-Pérez, Juan Gonzalo; Halir, Robert; Cheben, Pavel; Pereira-Martín, Daniel[et al.] (2018-04-30)
We propose a new strategy to automatically design highly efficient fiber-chip surface grating couplers. High performance designs are achieved with a substantially reduced computational cost by combining Floquet-Bloch mode ... -
Bricked and evanescently-coupled topologies: expanding the portfolio of subwavelength metamaterial 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.] (SPIE, 2023-02)
We present two novel topologies of subwavelength grating (SWG) waveguides: the bricked-SWG and the evanescently-coupled-SWG. The bricked topology enables accurate control of waveguide anisotropy while maintaining the index ... -
Building high-performance integrated optical devices using subwavelength grating metamaterials
Sánchez-Postigo, Alejandro; Ginel-Moreno, Pablo; Ortega-Moñux, Alejandro; Wanguemert-Pérez, Juan Gonzalo; Halir, Robert; Pereira-Martín, Daniel; Hadij-El-Houati, Abdelfettah; Schmid, Jens H.; Wang, Shurui; Vachon, Martin; Xu, Dan-Xia; Ye, Winnie N.; Soler-Penades, Jordi; Nedeljkovic, Milos; Mashanovich, Goran Z.; Cheben, Pavel; Molina-Fernández, Íñigo[et al.] (2021-09)
The use of subwavelength grating structures in silicon waveguides have fuelled the development of integrated optical components with superior performance. By a judicious lithographic pattern of the grating, the optical ... -
Customized spectral filters using cladding-modulated Bragg gratings in silicon waveguides.
Pereira-Martín, Daniel; Ortega-Moñux, Alejandro; Luque-González, José Manuel; Hadij-El-Houati, Abdelfettah; Sánchez-Postigo, Alejandro; Molina-Fernández, Íñigo; Cheben, Pavel; Schmid, Jens H.; Shurui, Wang; Ye, Winnie N.; Ctyroky, Jiri; Wanguemert-Pérez, Juan Gonzalo[et al.] (European Optical Society Annual Meeting (EOSAM) 2021., 2021-09-13)
Waveguide Bragg gratings are expected to play an important role in diverse applications of photonic integrated circuits. Here, we present our latest progress in implementing Bragg filters with a customized spectral response ... -
Design of subwavelength grating metamaterial waveguides for communications and sensing applications
Ortega-Moñux, Alejandro; Luque-González, José Manuel; Pereira-Martín, Daniel; Sánchez-Postigo, Alejandro; Hadij-El-Houati, Abdelfettah; Leuermann, Jonas; De-Oliva-Rubio, José; Halir, Robert; Wanguemert-Pérez, Juan Gonzalo; Molina-Fernández, Íñigo; Ctyroky, Jiri; Schmid, Jens H.; Cheben, Pavel[et al.] (2019-07-04)
In this work we will cover some of our recent advances in the design of state-of-the-art silicon photonic devices based on all-dielectric subwavelength grating (SWG) metamaterials. Specifically, we will focus on the design ... -
Diseño de antena óptica integrada de haz estrecho en tecnología silicon-on-insulator
Ortega-Moñux, Alejandro; Pereira-Martín, Daniel; Hadij-El-Houati, Abdelfettah; Ye, Winnie N.; Melati, Daniele; Xu, Dan-Xia; Janz, Siegfried; Sánchez-Postigo, Alejandro; Wanguemert-Pérez, Juan Gonzalo; Halir, Robert; Molina-Fernández, Íñigo; Schmid, Jens H.; Cheben, Pavel; Ginel-Moreno, Pablo[et al.] (2021-07)
Las antenas ópticas acopladas en fase son un elemento clave en sistemas de Light Detection and Ranging (LIDAR) integrados, en los que se necesita emitir un haz óptico con ancho angular estrecho en un amplio número de ... -
Diseño de grating couplers de orden cero de banda ancha y alta eficiencia para el infrarrojo medio
Sánchez-Postigo, Alejandro; Wanguemert-Pérez, Juan Gonzalo; Luque-González, José Manuel; Molina-Fernández, Íñigo; Cheben, Pavel; Halir, Robert; Schmid, Jens H.; Ortega-Moñux, Alejandro[et al.] (2017-09-27)
The mode fields of optical fibers and high-index contrast photonic waveguides have different dimensions, making difficult the coupling of light from one to the other. To solve this problem, surface grating couplers are one ... -
Engineering sub-wavelength silicon waveguides for sensing applications in the near-infrared and mid-infrared band
Wanguemert-Pérez, Juan Gonzalo; Sánchez-Postigo, Alejandro; Hadij-El-Houati, Abdelfettah; Leuermann, Jonas; Pérez-Armenta, Carlos; Luque-González, José Manuel; Ortega-Moñux, Alejandro; Halir, Robert; Molina-Fernández, Íñigo; Cheben, Pavel; Xu, Dan-Xia; Schmid, Jens H.; Ctyroky, Jiri; Soler-Penades, Jordi; Nedeljkovic, Milos; Mashanovich, Goran Z.[et al.] (2019-02-08)
Silicon photonics is one of the most promising candidates to achieve lab-on-a-chip systems. Making use of the evanescent-field sensing principle, it is possible to determine the presence and concentration of substances by ... -
Enhanced sensitivity subwavelength grating waveguides for silicon photonics sensing applications
Wanguemert-Pérez, Juan Gonzalo; Hadij-El-Houati, Abdelfettah; Sánchez-Postigo, Alejandro; Leuermann, Jonas; Pereira-Martín, Daniel; Luque-González, José Manuel; Cheben, Pavel; Xu, Dan-Xia; Schmid, Jens H.; Ctyroky, Jiri; Soler-Penades, Jordi; Nedeljkovic, Milos; Mashanovich, Goran Z.; Ortega-Moñux, Alejandro; Halir, Robert; Molina-Fernández, Íñigo[et al.] (2019-07-16)
In this work we will review the enormous potential of subwavelength grating waveguides for sensing applications in the near and mid-infrared bands, demonstrating the capability to engineer the mode profile to maximize the ... -
Estructuras sub-longutud de onda para el diseño de dispositivos en guía dieléctrica
Ortega-Moñux, Alejandro; Wanguemert-Pérez, Juan Gonzalo; Halir, Robert; Cheben, Pavel; Godoy-Rubio, Rafael; De-Oliva-Rubio, José; Sánchez-Postigo, Alejandro; Luque-González, José Manuel; Sarmiento-Merenguel, Jose Darío; Soler-Penades, Jordi; Nedeljkovic, Milos; Mashanovich, Goran Z.; Molina-Fernández, Íñigo[et al.] (Juan Córcoles Ortega et al., 2016)
Sub-wavelength structures are enabling the design of devices based in dielectric waveguides with unprecedented performance in both the near-infrared and mid-infrared wavelength regions. These devices include fiber-to-chip ... -
High performance silicon photonic devices based on practical metamaterials
Halir, Robert; Luque-González, José Manuel; Sánchez-Postigo, Alejandro; Herrero-Bermello, Alaine; González-Andrade, David; Hadij-El-Houati, Abdelfettah; Leuermann, Jonas; Pereira-Martín, Daniel; Ortega-Moñux, Alejandro; Ctyroky, Jiri; Wanguemert-Pérez, Juan Gonzalo; Velasco, Aitor V.; Sánchez-Rodriguez, Marina; De-Oliva-Rubio, José; Schmid, Jens H.; Soler-Penades, Jordi; Nedeljkovic, Milos; Mashanovich, Goran Z.; Cheben, Pavel; Molina-Fernández, Íñigo[et al.] (2019-07-15)
Subwavelength grating metamaterials are enabling a new generation of high-performance silicon photonic devices. Here we discuss the fundamental physics along with some of the latest advances in this rapidly expanding field. -
Integrated metamaterial surface-emitting antenna for beam steering applications
Ginel-Moreno, Pablo; Sánchez-Postigo, Alejandro; De-Oliva-Rubio, José; Hadij-El-Houati, Abdelfettah; Ye, Winnie N.; Wanguemert-Pérez, Juan Gonzalo; Molina-Fernández, Íñigo; Schmid, Jens H.; Cheben, Pavel; Ortega-Moñux, Alejandro[et al.] (2021-12)
Integrated optical antennas are relevant devices for the development of next-generation LIDAR systems. Here we experimentally demonstrate a new topology to implement long antennas in silicon-on-insulator platform. The ... -
Low limit of detection silicon photonic sensor with extremely-low-cost laser source
Leuermann, Jonas; Fernández-Gavela, Adrián; Lechuga, Laura M.; Sánchez-Postigo, Alejandro; Halir, Robert; Molina-Fernández, Íñigo[et al.] (2020-10-06)
Integrated photonic biosensors have demonstrated low bulk detection limits down to 1e−7 refractive index units. Nevertheless, most rely on expensive optical sources, such as DFB lasers. Here, we experimentally demonstrate ... -
Metamaterial antenna array fed by distributed Bragg deflector for beam steering on SOI platform
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.] (2023)
The capability to radiate collimated steerable beams of light is crucial for many applications, such as remote sensing and free-space optical communications. Here we experimentally demonstrate a novel 1D-antenna array ... -
Metamaterial antenna array fed by distributed Bragg deflector for SOI platform
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.] (2022)
We propose a distributed Bragg deflector working as a low loss (<0.3 dB) ultra compact beam expander, which generates an on chip Gaussian beam that illuminates a 1D array of 112 optical antennas with a length of 1.5 mm . ... -
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, Ali Z.; Osman, A.; Cao, Wei; Litteljohns, C.G.; Cheben, Pavel; Mashanovich, Goran 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 ... -
Mitigating reflections in integrated gas sensors
Torres-Cubillo, Antonia; Wanguemert-Pérez, Juan Gonzalo; Sánchez-Postigo, Alejandro; Molina-Fernández, Íñigo; Halir, Robert (2022-09-07)
Optical gas sensing for environmental monitoring has become an active research topic in the last decade. Among the different optical sensing configurations, silicon photonic integrated sensors stand as a compact, ... -
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 ... -
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-El-Houati, 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 ...