1 July 2015 High performance refractive index sensing in multimode plasmonic waveguide
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Proceedings Volume 9655, Fifth Asia-Pacific Optical Sensors Conference; 965521 (2015); doi: 10.1117/12.2184396
Event: Fifth Asia Pacific Optical Sensors Conference, 2015, Jeju, Korea, Republic of
We propose a scheme to extend dynamic range of a Fabry-Perot (FP) resonator-based refractive index sensor while maintaining the sensitivity. We considered an intensiometric refractive index sensor using an FP resonator in a plasmonic waveguide which is formed by mode selective mirrors. Then, we demonstrated that the intensity degeneracy is a cause of small dynamic range. Lastly, we found that mode dependent transmission characteristics of the FP resonator and 180-degree phase shift across FP resonances can be exploited for extension of dynamic range.
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Joonsoo Kim, Seung-Yeol Lee, Hyeonsoo Park, Byoungho Lee, "High performance refractive index sensing in multimode plasmonic waveguide", Proc. SPIE 9655, Fifth Asia-Pacific Optical Sensors Conference, 965521 (1 July 2015); doi: 10.1117/12.2184396; https://doi.org/10.1117/12.2184396

Refractive index



Plasmonic waveguides

Fabry–Perot interferometers


Phase shifts

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