Sharp bend in two-dimensional optical waveguide based on gradient refractive index structure

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Journal Article
Applied Optics, 2017, 56 (19), pp. 5336 - 5341
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© 2017 Optical Society of America. In this work, we propose the design of a sharp bend in a two-dimensional optical waveguide which has superellipse curve boundaries and a gradient refractive index structure in its core. Numerical simulations are presented to show the efficient light propagation in the waveguide bend, as well as the efficient light coupling between the proposed waveguide bend and a straight waveguide, for TE0 and TM0 modes. The proposed design strategy is also useful for designing other compact optical and photonic components.
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