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Greatly reduced radiation loss in planar waveguides with two-dimensional conducting interfaces

Greatly reduced radiation loss in planar waveguides with two-dimensional conducting interfaces

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A new strategy for radiation loss reduction in curved slab waveguides is presented. The proposed strategy is based on the proper modification of the boundary conditions at the core-to-cladding interface, whereupon extremely thin conductive nanolayers with non-zero surface conductance are imposed. The obtained numerical results show a noticeable decrease in the overall loss level.

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