RT Journal Article
T1 A review of silicon subwavelength gratings: building break-through devices with anisotropic metamaterials
A1 Luque-González, José Manuel
A1 Sánchez-Postigo, Alejandro
A1 Hadij-El-Houati, Abdelfettah
A1 Ortega-Moñux, Alejandro
A1 Wanguemert-Pérez, Juan Gonzalo
A1 Schmid, Jens H.
A1 Cheben, Pavel
A1 Molina-Fernández, Íñigo
A1 Halir, Robert
K1 Silicio -  Propiedades ópticas
AB Silicon photonics is playing a key role in areas as diverse as high-speed optical communications, neural networks, supercomputing, quantum photonics, and sensing, which demand the development of highly efficient and compact light-processing devices. The lithographic segmentation of silicon waveguides at the subwavelength scale enables the synthesis of artificial materials that significantly expand the design space in silicon photonics. The optical properties of these metamaterials can be controlled by a judicious design of the subwavelength grating geometry, enhancing the performance of nanostructured devices without jeopardizing ease of fabrication and dense integration. Recently, the anisotropic nature of subwavelength gratings has begun to be exploited, yielding unprecedented capabilities and performance such as ultrabroadband behavior, engineered modal confinement, and sophisticated polarization management. Here we provide a comprehensive review of the field of subwavelength metamaterials and their applications in silicon photonics. We first provide an in-depth analysis of how the subwavelength geometry synthesizes the metamaterial and give insight into how properties like refractive index or anisotropy can be tailored. The latest applications are then reviewed in detail, with a clear focus on how subwavelength structures improve device performance. Finally, we illustrate the design of two ground-breaking devices in more detail and discuss the prospects of subwavelength gratings as a tool for the advancement of silicon photonics.
PB De Gruyter
YR 2021
FD 2021
LK https://hdl.handle.net/10630/34171
UL https://hdl.handle.net/10630/34171
LA eng
NO Luque-González, J., Sánchez-Postigo, A., Hadij-ElHouati, A., Ortega-Moñux, A., Wangüemert-Pérez, J., Schmid, J., Cheben, P., Molina-Fernández, Í. & Halir, R. (2021). A review of silicon subwavelength gratings: building break-through devices with anisotropic metamaterials. Nanophotonics, 10(11), 2765-2797. https://doi.org/10.1515/nanoph-2021-0110
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 3 mar 2026