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Transition from “Magic Width” to “Anti-Magic Width” in Thin-ridge Silicon-on-Insulator Waveguides

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Abstract

We analyse a thin-ridge silicon-on-insulator waveguide which tapers from low-loss “magic” width to strongly radiating “anti-magic width” using a vector eigenmode expansion method. The conditions to achieve highly directional radiation are identified.

© 2012 Optical Society of America

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