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Phaselike resonance behavior in optical transmission of sandwich coaxial square ring arrays
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View: Figures


Image of FIG. 1.
FIG. 1.

Measured (black solid line) and simulated (red dashed line) transmission spectra of (a) sandwich coaxial square rings and (b) pure fishnet structures. The inset of (a) is the magnetic field at the middle layer of the outside sandwich fishnet structure in sandwich coaxial square ring arrays. Inset of (b) is schematic view of the silver––silver sandwich structure perforated with coaxial square ring arrays.

Image of FIG. 2.
FIG. 2.

The calculated electric field distribution (y-cut cross section with two periods) corresponding to the peaks and dips [(a)–(d)] in Fig. 1(a). Within the white dashed block in (a) is a unit cell of the sample. The inset of (b) is the schematic illustration of electric field and electric charge distribution corresponding to the peak . The inset of (c) is distribution for the dip , in the center of the middle layer (xy plane, ).

Image of FIG. 3.
FIG. 3.

The electric field vector distributions corresponding to the peaks and dips [(a)–(d)].

Image of FIG. 4.
FIG. 4.

Left is the measured transmission spectrum (red and black lines represent the transmission spectra of the incident angle of 0° and 13°, respectively). Right is the corresponding dispersion diagram.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Phaselike resonance behavior in optical transmission of sandwich coaxial square ring arrays