International Journal of Optics / 2012 / Article / Fig 5

Review Article

Nanoscale Plasmonic Devices Based on Metal-Dielectric-Metal Stub Resonators

Figure 5

(a) Schematic of a switch consisting of a silver-air-silver MDM plasmonic waveguide side-coupled to a cavity filled with an absorbing material with refractive index ๐‘› = 2 . 0 2 + ๐‘– ๐œ… . The imaginary part ๐œ… of the refractive index can be modified with an external control beam. (b) Transmission spectra of the switch calculated using FDFD. Results are shown for ๐‘ค = 5 0 โ€‰nm, ๐ฟ = 1 2 0 โ€‰nm, ๐œ… = 0 (black curve), ๐‘ค = 5 0 โ€‰nm, ๐ฟ = 4 0 5 โ€‰nm, ๐œ… = 0 (red curve), ๐‘ค = 2 0 0 โ€‰nm, ๐ฟ = 1 7 5 โ€‰nm, ๐œ… = 0 (green curve), and ๐‘ค = 5 0 โ€‰nm, ๐ฟ = 1 2 0 โ€‰nm, ๐œ… = 0 . 1 (blue curve). In all cases ๐‘ค 0 = 5 0 โ€‰nm and ๐œ† 0 = 1 . 5 5 โ€‰ฮผm.
372048.fig.005a
(a)
372048.fig.005b
(b)

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