Listar Investigación por autor "Xu, Dan-Xia"
Mostrando ítems 1-11 de 11
-
A general approach for robust integrated polarization rotators
Alonso-Ramos, C.; Halir, Robert
; Ortega-Moñux, Alejandro; Cheben, Pavel; Vivien, Laurent; Molina-Fernandez, Iñigo; 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 ... -
Automatic design of high-performance fiber-chip surface grating couplers based on Floquet-Bloch mode analysis
Sanchez-Postigo, Alejandro; Xu, Dan-Xia; Hadij-El-Houati, Abdelfettah; Molina-Fernandez, Iñigo; Ortega-Moñux, Alejandro; Wanguemert-Perez, 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 ... -
Building high-performance integrated optical devices using subwavelength grating metamaterials
Sanchez-Postigo, Alejandro; Ginel-Moreno, Pablo; Ortega-Moñux, Alejandro; Wanguemert-Perez, 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-Fernandez, Iñigo[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 ... -
Engineering sub-wavelength silicon waveguides for sensing applications in the near-infrared and mid-infrared band
Wanguemert-Perez, Juan Gonzalo; Sanchez-Postigo, Alejandro; Hadij-El-Houati, Abdelfettah; Leuermann, Jonas; Pérez-Armenta, Carlos; Luque-González, José Manuel; Ortega-Moñux, Alejandro; Halir, Robert; Molina-Fernandez, Iñigo; 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 ... -
Engineering the optical properties of silicon using sub-wavelength structures
Halir, Robert; Ortega-Moñux, Alejandro; Maese-Novo, Alejandro; Perez-Galacho, Diego; Zavargo-Peche, Luis; Molina-Fernandez, Iñigo; Wanguemert-Perez, 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 ... -
Enhanced sensitivity subwavelength grating waveguides for silicon photonics sensing applications
Wanguemert-Perez, Juan Gonzalo; Hadij-El-Houati, Abdelfettah; Sanchez-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-Fernandez, Iñigo[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 ... -
Subwavelength metamaterial engineering for silicon photonics
Halir, Robert; Ortega-Moñux, Alejandro; Soler-Penades, Jordi; Luque-González, José Manuel; Sarmiento-Merenguel, Darío; Sanchez-Postigo, Alejandro; Wanguemert-Perez, Juan Gonzalo; Schmid, Jens H.; Xu, Dan-Xia; Janz, Siegfried; Lapointe, J.; Molina-Fernandez, Iñigo; Nedeljkovic, Milos; Mashanovich, Goran; 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 ... -
Subwavelength metamaterial for communications and sensing
Wanguemert-Perez, Juan Gonzalo; Sanchez-Postigo, Alejandro; Hadij-El-Houati, Abdelfettah; Pereira-Martin, Daniel; Luque-González, José Manuel; Leuermann, Jonas; Ortega-Moñux, Alejandro; Halir, Robert; Molina-Fernandez, Iñigo; Cheben, Pavel; Xu, Dan-Xia; Schmid, Jens H.; Ctyroky, Jiri; Litvik, Jan; Soler-Penades, Jordi; Nedeljkovic, Milos; Mashanovich, Goran; González Andrade, David; Velasco, Aitor V.[et al.] (2018-10-29)
Silicon photonics is considered a breakthrough technology with strong impact in areas as diverse as data center interconnection, high performance computing, the deployment of 5G future communication systems or lab-on-a-chip ... -
Subwavelength-grating metamaterial integrated devices for the near- and mid-infrared wavelengths
Sanchez-Postigo, Alejandro; Wanguemert-Perez, Juan Gonzalo; Ortega-Moñux, Alejandro; Halir, Robert; Pereira-Martín, Daniel; Luque-González, José Manuel; Schmid, Jens H.; Wang, Shurui; Vachon, Martin; Xu, Dan-Xia; Soler-Penades, Jordi; Nedeljkovic, Milos; Mashanovich, Goran Z.; Cheben, Pavel; Molina-Fernandez, Iñigo[et al.] (2021)
The subwavelength patterning of planar structures is now widely used in silicon photonics, enabling the synthesis of metamaterials with engineered optical properties, including refractive index, dispersion, and anisotropy. ... -
Ultra-broadband Silicon Photonic Multimode Interference Coupler
Halir, Robert; Cheben, Pavel; Luque-González, José Manuel; Sarmiento-Merenguel, Jose Darío; Schmid, Jens H.; Wanguemert-Perez, Juan Gonzalo; Xu, Dan-Xia; Wang, Shurui; Ortega-Moñux, Alejandro; Molina-Fernandez, Iñigo[et al.] (ECIO, 2017)
In integrated optics, multimode interference couplers (MMIs) are used as light-wave splitters and combiners in a wide variety of devices ranging from spectrometers to sensors and coherent optical receivers. While their ...