META Conference, META'12

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Improving refractive index sensing by tailoring the lineshape and measuring the phase of plasmonic resonances
Pol Van Dorpe, Niels Verellen, Kristof Lodewijks, Jian Ye, Liesbet Lagae

Last modified: 2012-01-03

Abstract


Plasmon resonances are known to exhibit a large sensitivity to the local refractive index. In order to establish an accurate measurement of the resonance wavelength position, it is beneficial if the resonance linewidth is narrow. We have been tailoring the lineshape of plasmonic resonances using symmetry breaking and the excitation of Fano resonances and by measuring the phase of the resonances. Substantial improvements are reported.

Keywords


plasmonics; nanophotonics; biosensing