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Enhanced optical response in doubly waveguided plasmonic gratings
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10.1063/1.2978236
/content/aip/journal/apl/93/9/10.1063/1.2978236
http://aip.metastore.ingenta.com/content/aip/journal/apl/93/9/10.1063/1.2978236
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Figures

Image of FIG. 1.
FIG. 1.

(a) and (b) The diffraction geometry for the SWGGS and DWGGS devices. is the angle of incidence, is the diffraction angle into beam C, is the refraction angle into the waveguide and the diffraction angle of beam C into beam D2, and is the diffraction angle into beam B. (c) and (d) The SEM and AFM images of the gold-nanowire grating, respectively.

Image of FIG. 2.
FIG. 2.

Comparison of optical extinction measurements between DWGGS (red) and SWGGS (black) for (a) TE polarization and normal incidence, (b) TM polarization and normal incidence, (c) TE polarization and incidence, and (d) TM polarization and incidence.

Image of FIG. 3.
FIG. 3.

Angle-resolved tuning properties of the SWGGS [(a) and (b)] and DWGGS [(c) and (d)] devices for TE [(a) and (c)], and TM [(b) and (d)] polarizations.

Image of FIG. 4.
FIG. 4.

(a) Optical extinction spectra of the TE-polarization resonance mode for normal incidence at different thicknesses of the top waveguide. (b) Angle-resolved tuning properties of the TE mode with a top-waveguide thickness of about 175 nm. A relatively broad-band extinction spectrum can be observed around 750 nm when the incident angle is larger than . The downward arrows indicate the spectral peak of the top-waveguide resonance mode.

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/content/aip/journal/apl/93/9/10.1063/1.2978236
2008-09-05
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Enhanced optical response in doubly waveguided plasmonic gratings
http://aip.metastore.ingenta.com/content/aip/journal/apl/93/9/10.1063/1.2978236
10.1063/1.2978236
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