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A Compact and Highly Sensitive Bio-sensor using Directional Coupling between Metal Clad Ridge Waveguides

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Abstract

We propose a compact and highly sensitive bio-sensor based on directional coupling between two metal under-clad ridge waveguides. The sensitivity of the proposed sensor is found to be 6500 nm/RIU for the ambient RI ~1.33.

© 2016 Optical Society of America

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