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Metasurface-Coated Waveguides Reduce Crosstalk

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Engineers have developed a conformal metasurface coating that can simultaneously control diverse optical properties of dielectric waveguides, including mode confinement, polarization, scattering signature and crosstalk. The two-layer coating can shrink the diameter of waveguides, enabling more flexible control of waveguide characteristics. Existing methods for controlling waveguides using 3D structures can provide efficient paths for obtaining highly confined modes, optical activity, or a low-scattering signature; but typically these efficiencies come at the expense of increased...Read full article

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