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    Metasurfaces Enable Low-Loss Integrated Photonics Platform

    Article obtained from Photonics RSS Feed.

    A University of Delaware (UD) research team has designed an integrated photonics platform using metasurfaces. To limit the loss of data, the team fabricated a high-contrast transmitarray (HCTA)-based metalens on a silicon-based chip programmed with hundreds of tiny air slots to enable on-chip parallel optical signal processing.

    The 1D metalens has a numerical aperture up to 2.14, which can focus light to within 10 µm with less than 1 dB loss. Computational tasks based on Fourier transformation (FT) can be performed by cascading multiple layers of the HCTA-based metalenses. To demonstrate FT and spatial differentiation, the researchers layered three metasurfaces together.

    The platform is foundry…

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    Nov, 12 2019 |

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