Listar por autor "Janz, Siegfried"
Mostrando ítems 1-11 de 11
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A general approach for robust integrated polarization rotators
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.] (International Society for Optics and Photonics, 2013)
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 ... -
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 ... -
Engineering the optical properties of silicon using sub-wavelength structures
Halir, Robert; Ortega-Moñux, Alejandro; Maese-Novo, Alejandro; Pérez-Galacho, Diego; Zavargo-Peche, Luis; Molina-Fernández, Íñigo; Wanguemert-Pérez, Juan Gonzalo; Cheben, Pavel; Schmid, Jens H.; Xu, Dan-Xia; Janz, Siegfried; Fedeli, Jean-Marc[et al.] (IEEE Photonics Society, 2013)
In most integrated optics platforms, including silicon-on-insulator, only minor modifications in refractive index are possible. The geometry of the waveguiding structure is thus the only degree of freedom for the design ... -
Mapping the global design space of nanophotonic components using machine learning pattern recognition
(Springer Nature, 2019-10-21)Nanophotonics finds ever broadening applications requiring complex components with many parameters to be simultaneously designed. Recent methodologies employing optimization algorithms commonly focus on a single performance ... -
Perfectly vertical surface grating couplers using subwavelength engineering for increased feature sizes.
Kamandar Dezfouli, Mohsen; Grinberg, Yuri; Melati, Daniele; Cheben, Pavel; Schmid, Jens H.; Sánchez-Postigo, Alejandro; Ortega-Moñux, Alejandro; Wanguemert-Pérez, Juan Gonzalo; Cheriton, Ross; Janz, Siegfried; Xu, Dan-Xia; Schmid, Jens H.[et al.] (Optica, 2020-06-29)
We present perfectly vertical grating couplers for the 220 nm silicon-on-insulator platform incorporating subwavelength metamaterials to increase the minimum feature sizes and achieve broadband low back-reflection. Our ... -
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 ... -
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 ... -
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 Index Engineering for SOI Waveguides
Halir, Robert; Luque-González, José Manuel; Wang, S.; Sarmiento-Merenguel, Jose Darío; Sánchez-Postigo, Alejandro; Wanguemert-Pérez, Juan Gonzalo; Cheben, Pavel; Schmid, Jens H.; Xu, Dan-Xia; Janz, Siegfried; Lapointe, J.; Molina-Fernández, Íñigo; Ortega-Moñux, Alejandro[et al.] (2016-09-06)
Photonic structures with a sub-wavelength pitch, small enough to suppress diffraction, can behave as equivalent homogenous materials that can be engineered to exhibit a specific refractive index and dispersion. Here we ... -
Subwavelength metamaterial engineering for silicon photonics
Halir, Robert; Ortega-Moñux, Alejandro; Soler-Penades, Jordi; Luque-González, José Manuel; Sarmiento-Merenguel, Jose Darío; Sánchez-Postigo, Alejandro; Wanguemert-Pérez, Juan Gonzalo; Schmid, Jens H.; Xu, Dan-Xia; Janz, Siegfried; Lapointe, J.; Molina-Fernández, Íñigo; Nedeljkovic, Milos; Mashanovich, Goran Z.; Cheben, Pavel[et al.] (2017-02-06)
Waveguides structured at the subwavelength scale frustrate di raction and behave as optical metamaterials with controllable refractive index. These structures have found widespread applications in silicon photonics, ranging ...