Subwavelength Metamaterials: From On-Chip Devices to Free-Space Beams

Silicon-on-insulator is rapidly becoming the optical integration platform of choice for applications ranging from telecom and datacom to sensing and quantum photonics. Silicon waveguides exhibit a strong index contrast, and can be produced via mature CMOS processeses with high-resolution lithography, enabling dense optical integration. However, few materials are compatible with these processes, severely limiting the degrees of freedom for device design. Subwavelength structures overcome this limitation by enabling metamaterials with adjustable optical properties: their subwavelength periodicity suppresses diffraction, allowing light to travel through them as it would in an equivalent homogeneous yet anisotropic material [1]. These properties have been extensively exploited to create low-loss devices with very broad bandwidths and compact footprints [1].

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Published
2025-06-23
DOI
https://doi.org/10.1109/cleo/europe-eqec65582.2025.11111053
Primary Topic
Photonic and Optical Devices
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article
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article

Subwavelength Metamaterials: From On-Chip Devices to Free-Space Beams

Alejandro Sánchez‐Postigo, Robert Halir, Alejandro Sánchez‐Sánchez, José Manuel Luque‐González et al.
Photonic and Optical Devices
article

Subwavelength Metamaterials: From On-Chip Devices to Free-Space Beams

Alejandro Sánchez‐Postigo, Robert Halir, Alejandro Sánchez‐Sánchez, José Manuel Luque‐González, Laureano Moreno‐Pozas, J. de‐Oliva‐Rubio, J. Gonzalo Wangüemert‐Pérez, Íñigo Molina‐Fernández, Pablo Ginel‐Moreno, Alejandro Ortega‐Moñux, Carlos Pérez‐Armenta, Miguel Barona-Ruiz, Pavel Cheben
article en

Abstract

Silicon-on-insulator is rapidly becoming the optical integration platform of choice for applications ranging from telecom and datacom to sensing and quantum photonics. Silicon waveguides exhibit a strong index contrast, and can be produced via mature CMOS processeses with high-resolution lithography, enabling dense optical integration. However, few materials are compatible with these processes, severely limiting the degrees of freedom for device design. Subwavelength structures overcome this limitation by enabling metamaterials with adjustable optical properties: their subwavelength periodicity suppresses diffraction, allowing light to travel through them as it would in an equivalent homogeneous yet anisotropic material [1]. These properties have been extensively exploited to create low-loss devices with very broad bandwidths and compact footprints [1].

National Research Council Canada (CA), Universidad de Málaga (ES)
Openalex Percentile: Top 79%
Photonic and Optical Devices
DOISourceOpenAlex
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Subwavelength Metamaterials: From On-Chip Devices to Free-Space Beams — Alejandro Sánchez‐Postigo, Robert Halir, et al. · (2025) | TGRS Research Map | TGRS