Plasmonic Mach–Zehnder interferometric sensor based on a metal–insulator-metal nanostructure |
(color online) (a) The interference spectra of the MIM-MZI for different refractive indices. (b) Peak wavelength (peak 1 and peak 2 of 831.2 nm and 910 nm, respectively) as a function of the refractive index at the metal/dielectric interface. |
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