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A novel Silicon-on-insulator (SOI) integrated optic waveguide configuration is investigated as a platform for sensing. Our thin-ridge SOI waveguide structures exhibit lateral leakage and utilise strong evanescence to sense the presence of a biofilm.
We present a method to control the direction of lateral leakage of Silicon-On-Insulator waveguide which is verified by full vector super-mode analysis. The results suggest new opportunities for device topologies inspired by antennas.
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