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Robust one-way modes in gyromagnetic photonic crystal waveguides with different interfaces
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10.1063/1.3470873
/content/aip/journal/apl/97/4/10.1063/1.3470873
http://aip.metastore.ingenta.com/content/aip/journal/apl/97/4/10.1063/1.3470873
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Figures

Image of FIG. 1.
FIG. 1.

Schematic of the edge state waveguide formed by the interface between a GPC (bottom half) and a normal PC (upper half), which are surrounded by some microwave absorbing materials (the outer regions). is the width of the waveguide, and the applied dc static magnetic field is along the direction. The forward and backward transmittances are denoted by S21 and S12, respectively.

Image of FIG. 2.
FIG. 2.

Measured transmission spectrum and calculated band structure for the two kinds of PC in our experiment. (a) and (b) are for the PC, where the dashed lines denote the complete gap. (c) and (d) describe the YIG GPC under a 2020 G magnetic field, and its complete gap locates between the two dashed lines.

Image of FIG. 3.
FIG. 3.

Calculated [(a) and (c)] and measured [(b) and (d)] spectra for the PC-YIG GPC waveguide with a width of . (a) and (b) correspond to the pure waveguide; (c) and (d) are the case of the metal intrusion as shown in the inset. The metal plate is inserted deep into the PC and into the YIG GPC, which can efficiently block the direct propagating wave. The shadow region in (a) and (c) corresponds to the second band gap.

Image of FIG. 4.
FIG. 4.

Measured spectra for four different waveguide width of (a) , (b) , (c) , and (d) , respectively.

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/content/aip/journal/apl/97/4/10.1063/1.3470873
2010-07-27
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Robust one-way modes in gyromagnetic photonic crystal waveguides with different interfaces
http://aip.metastore.ingenta.com/content/aip/journal/apl/97/4/10.1063/1.3470873
10.1063/1.3470873
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