Academic literature on the topic 'Subwavelength grating metamaterials'

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Journal articles on the topic "Subwavelength grating metamaterials"

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Luque-González, José Manuel, Alejandro Sánchez-Postigo, Abdelfettah Hadij-ElHouati, et al. "A review of silicon subwavelength gratings: building break-through devices with anisotropic metamaterials." Nanophotonics 10, no. 11 (2021): 2765–97. http://dx.doi.org/10.1515/nanoph-2021-0110.

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Abstract 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
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Sánchez-Postigo, Alejandro, Pablo Ginel-Moreno, Alejandro Ortega-Moñux, et al. "Building high-performance integrated optical devices using subwavelength grating metamaterials -INVITED." EPJ Web of Conferences 255 (2021): 01001. http://dx.doi.org/10.1051/epjconf/202125501001.

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The use of subwavelength grating structures in silicon waveguides have fuelled the development of integrated optical components with superior performance. By a judicious lithographic patterning of the grating, the optical properties of the synthesized metamaterial can be accurately tailored. In this work, we review our latest advances in subwavelength-grating-engineered silicon and germanium planar devices.
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Parra, Jorge. "Polarization-Insensitive Silicon Grating Couplers via Subwavelength Metamaterials and Metaheuristic Optimization." Photonics 12, no. 5 (2025): 428. https://doi.org/10.3390/photonics12050428.

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Silicon photonics is the leading platform in photonic integrated circuits (PICs), enabling dense integration and low-cost manufacturing for applications such as data communications, artificial intelligence, and quantum processing, to name a few. However, efficient and polarization-insensitive fiber-to-PIC coupling for multipoint wafer characterization remains a challenge due to the birefringence of silicon waveguides. Here, we address this issue by proposing polarization-insensitive grating couplers based on subwavelength dielectric metamaterials and metaheuristic optimization. Subwavelength p
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Pérez-Armenta, Carlos, Alejandro Ortega-Moñux, José Manuel Luque-González, et al. "Polarization independent 2×2 multimode interference coupler with bricked subwavelength metamaterial." EPJ Web of Conferences 266 (2022): 01009. http://dx.doi.org/10.1051/epjconf/202226601009.

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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 hinders the development of polarization-insensitive devices. The dispersion and anisotropy engineering leveraging subwavelength grating (SWG) metamaterials makes possible the development of polarization agnostic waveguide components. In this work we build upon the bricked SWG metamaterial nanostructures to design a polarization independent 2×2 multimode interference (MMI) c
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Kameshkov, Oleg, Vasily Gerasimov, and Boris Knyazev. "Numerical Optimization of Refractive Index Sensors Based on Diffraction Gratings with High Aspect Ratio in Terahertz Range." Sensors 22, no. 1 (2021): 172. http://dx.doi.org/10.3390/s22010172.

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Terahertz surface plasmon resonance (SPR) sensors have been regarded as a promising technology in biomedicine due to their real-time, label-free, and ultrasensitive monitoring features. Different authors have suggested a lot of SPR sensors, including those based on 2D and 3D metamaterials, subwavelength gratings, graphene, and graphene nanotube, as well as others. However, one of the traditional approaches to realize high sensitivity SPR sensors based on metal diffraction gratings has been studied poorly in the terahertz frequency range. In this article, a linear metal rectangular diffraction
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Vakarin, Vladyslav, Daniele Melati, Thi Thuy Duong Dinh, et al. "Metamaterial-Engineered Silicon Beam Splitter Fabricated with Deep UV Immersion Lithography." Nanomaterials 11, no. 11 (2021): 2949. http://dx.doi.org/10.3390/nano11112949.

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Subwavelength grating (SWG) metamaterials have garnered a great interest for their singular capability to shape the material properties and the propagation of light, allowing the realization of devices with unprecedented performance. However, practical SWG implementations are limited by fabrication constraints, such as minimum feature size, that restrict the available design space or compromise compatibility with high-volume fabrication technologies. Indeed, most successful SWG realizations so far relied on electron-beam lithographic techniques, compromising the scalability of the approach. He
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Fraser, William, Radovan Korček, Ivan Glesk, et al. "High-Efficiency Metamaterial-Engineered Grating Couplers for Silicon Nitride Photonics." Nanomaterials 14, no. 7 (2024): 581. http://dx.doi.org/10.3390/nano14070581.

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Silicon nitride (Si3N4) is an ideal candidate for the development of low-loss photonic integrated circuits. However, efficient light coupling between standard optical fibers and Si3N4 chips remains a significant challenge. For vertical grating couplers, the lower index contrast yields a weak grating strength, which translates to long diffractive structures, limiting the coupling performance. In response to the rise of hybrid photonic platforms, the adoption of multi-layer grating arrangements has emerged as a promising strategy to enhance the performance of Si3N4 couplers. In this work, we pre
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Luque‐González, José Manuel, Robert Halir, Juan Gonzalo Wangüemert‐Pérez, et al. "An Ultracompact GRIN‐Lens‐Based Spot Size Converter using Subwavelength Grating Metamaterials." Laser & Photonics Reviews 13, no. 11 (2019): 1900172. http://dx.doi.org/10.1002/lpor.201900172.

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Benedikovic, Daniel, Carlos Alonso-Ramos, Sylvain Guerber, et al. "Sub-decibel silicon grating couplers based on L-shaped waveguides and engineered subwavelength metamaterials." Optics Express 27, no. 18 (2019): 26239. http://dx.doi.org/10.1364/oe.27.026239.

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González, Andrade David, Irene Olivares, de Cabo Raque Fernández, Jaime Vilas, Antonio Dias, and Velasco Aitor V. "Broadband three-mode converter and multiplexer based on cascaded symmetric Y-junctions and subwavelength engineered MMI and phase shifters." Optics and Laser Technology 164, no. 109513 (2023): 1–8. https://doi.org/10.1016/j.optlastec.2023.109513.

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Mode-division multiplexing has emerged as a promising route for increasing transmission capacity while maintaining the same level of on-chip integration. Despite the large number of on-chip mode converters and multiplexers reported for the silicon-on-insulator platform, scaling the number of multiplexed modes is still a critical challenge. In this paper, we present a novel three-mode architecture based on multimode interference couplers, passive phase shifters and cascaded symmetric Y-junctions. This architecture can readily operate up to the third-order mode by including a single switchable p
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Dissertations / Theses on the topic "Subwavelength grating metamaterials"

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Kut, King Kan Warren. "Design and characterization of subwavelength grating (SWG) engineered silicon photonics devices fabricated by immersion lithography." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPAST099.

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La technologie photonique sur silicium s'appuie sur les procédés matures de fabrication de l'industrie du semi-conducteur pour produire des composants opto-électroniques à échelle industrielle. Les métamatériaux à base de réseaux sub-longueur d'onde permettent de contrôler le confinement du mode et la dispersion, et ont ainsi été implémentés pour démontrer des performances de pointe de composants photoniques intégrés. Les effets de diffraction et de réflexions sont supprimés dans les matériaux sub-longueur d'onde. Leurs dimensions sont petites et sont environ de 100 nm. Jusqu'à présent, la maj
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Nikkhah, Hamdam. "Enhancing the Performance of Si Photonics: Structure-Property Relations and Engineered Dispersion Relations." Thesis, Université d'Ottawa / University of Ottawa, 2018. http://hdl.handle.net/10393/37144.

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The widespread adoption of photonic circuits requires the economics of volume manufacturing offered by integration technology. A Complementary Metal-Oxide Semiconductor compatible silicon material platform is particularly attractive because it leverages the huge investment that has been made in silicon electronics and its high index contrast enables tight confinement of light which decreases component footprint and energy consumption. Nevertheless, there remain challenges to the development of photonic integrated circuits. Although the density of integration is advancing steady and the integra
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Conference papers on the topic "Subwavelength grating metamaterials"

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Ye, Winnie. "Recent Advances on Silicon-Based Metamaterial Grating Couplers." In Integrated Photonics Research, Silicon and Nanophotonics. Optica Publishing Group, 2024. https://doi.org/10.1364/iprsn.2024.im4g.5.

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Grating couplers have emerged as crucial elements for photonic integrated circuits due to their ability to provide flexible light-coupling and enable wafer-scale testing. We present our recent advances in grating coupler designs using subwavelength metamaterials. Full-text article not available; see video presentation
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Benedikovic, Daniel, William Fraser, Radovan Korcek, et al. "Harnessing subwavelength metamaterials for low-loss grating couplers in silicon nitride waveguides." In Integrated Optics: Design, Devices, Systems, and Applications VIII, edited by Pavel Cheben, Jiří Čtyroký, and Iñigo Molina-Fernández. SPIE, 2025. https://doi.org/10.1117/12.3056402.

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Li, Wanxin, Jiewen Li, Rui Li, et al. "Ultra-Low Limit-of-Detection Label-Free Biosensing Utilizing Mode Splitting in Subwavelength Grating Metamaterial Microring Resonators." In 2024 Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR). IEEE, 2024. http://dx.doi.org/10.1109/cleo-pr60912.2024.10676877.

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Naraine, Cameron M., Jocelyn N. Westwood-Bachman, Cameron Horvath, et al. "Silicon Nitride Ring Resonators Based on Subwavelength Grating Metamaterials." In CLEO: Science and Innovations. Optica Publishing Group, 2022. http://dx.doi.org/10.1364/cleo_si.2022.sth2h.3.

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We demonstrate subwavelength grating metamaterial ring resonators on a silicon nitride platform. We report an internal Q factor of 2.11˖105 and 1.48 dB/cm propagation loss at 1540 nm wavelength. We discuss the potential of these novel devices for applications in evanescent field sensing and light amplification.
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Mia, Md Borhan, Nafiz Jaidye, Ishtiaque Ahmed, Syed Z. Ahmed, and Sangsik Kim. "Silicon photonic polarization splitter-rotator with subwavelength grating metamaterials." In CLEO: Applications and Technology. Optica Publishing Group, 2022. http://dx.doi.org/10.1364/cleo_at.2022.jw3b.162.

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We present a silicon photonic polarization splitter-rotator (PSR) with subwavelength gratings (SWGs). SWGs enhance the local coupling coefficient during the modal transition and make the PSR more compact than a strip waveguide-based PSR.
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Nikkhah, H., and T. J. Hall. "Subwavelength grating waveguide design rules for integrated photonics." In 2015 9th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS). IEEE, 2015. http://dx.doi.org/10.1109/metamaterials.2015.7342487.

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de Cabo, Raquel Fernández, Jaime Vilas, Aitor V. Velasco, Pavel Cheben, and David González-Andrade. "Subwavelength silicon metamaterials for high-performance and fabrication-tolerant power splitting." In Integrated Photonics Research, Silicon and Nanophotonics. Optica Publishing Group, 2023. http://dx.doi.org/10.1364/iprsn.2023.jtu4a.18.

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We exploit the new degrees of freedom offered by subwavelength grating metamaterials to demonstrate two novel Y–junction power-splitting architectures for the silicon-on-insulator platform, achieving ultra-broadband and fabrication-tolerant performance.
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Kabir, Md Faiyaz, Md Borhan Mia, Ishtiaque Ahmed, Nafiz Jaidye, Syed Z. Ahmed, and Sangsik Kim. "Zero crosstalk in anisotropic TM leaky mode with subwavelength grating metamaterials." In CLEO: Science and Innovations. Optica Publishing Group, 2023. http://dx.doi.org/10.1364/cleo_si.2023.sth4r.7.

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We show that a TM leaky mode realized by subwavelength gratings (SWGs) can eliminate crosstalk between proximate waveguides. Oscillating fields i n t he SWGs allow coupling coefficient components to counteract each other, resulting in zero crosstalk.
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Fernández de Cabo, Raquel, Jaime Vilas Ramos, Pavel Cheben, Aitor Villafranca Velasco, and David González Andrade. "Experimental characterization of a high-performance Y-junction enhanced with subwavelength grating metamaterials (Conference Presentation)." In Metamaterials, Metadevices, and Metasystems 2022, edited by Nader Engheta, Mikhail A. Noginov, and Nikolay I. Zheludev. SPIE, 2022. http://dx.doi.org/10.1117/12.2631762.

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Mia, Md Borhan, Syed Z. Ahmed, Ishtiaque Ahmed, Nafiz Jaidye, and Sangsik Kim. "Ultra-broadband silicon photonic polarization beam splitter with anisotropic subwavelength grating metamaterials." In 2021 IEEE Photonics Conference (IPC). IEEE, 2021. http://dx.doi.org/10.1109/ipc48725.2021.9592882.

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