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Planar Focusing Element Based on Scattering Structures in a Dielectric Waveguide

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Abstract

Focusing elements in integrated optics are required for localised high intensities and for coupling between certain components. Here, a focusing element is designed using analytical approximations, is simulated using 3D FDTD and is characterised using far-field optical imaging. Focusing below λ/2 is predicted.

© 2018 The Author(s)

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