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14 September 2011 SOI strip waveguide microring resonator for homogeneous biosensing
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We report the simulation and analytical results obtained for homogenous or bulk sensing of protein on Siliconon- insulator strip waveguide based microring resonator. The radii of the rings considered are 5 μm and 20 μm; the waveguide dimensions are 300 × 300 nm. A gap of (i) 200 nm and (ii) 300 nm exists between the ring and the bus waveguide. The biomaterial is uniformly distributed over a thickness which exceeds the evanescent field penetration depth of 150 nm. The sensitivities of the resonators are 32.5 nm/RIU and 17.5 nm/RIU (RIU - Refractive index unit) respectively.
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Sathish Malathi, Nivesh Mangal, Shafeek A. Samad, Rajini V. Honnungar, and T. Srinivas "SOI strip waveguide microring resonator for homogeneous biosensing", Proc. SPIE 8129, Novel Optical Systems Design and Optimization XIV, 81290B (14 September 2011);

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