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Observation of tunneling of slow and fast electromagnetic modes in coupled periodic waveguides
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10.1063/1.3553785
/content/aip/journal/apl/98/6/10.1063/1.3553785
http://aip.metastore.ingenta.com/content/aip/journal/apl/98/6/10.1063/1.3553785
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Top: sketch of symmetric coupler; dots indicate rods, cross indicates source antenna. (a) Experimentally extracted dispersion of two fundamental modes (1: solid, 2: dashed lines) and 2D MPB numerical simulations with effective refractive index (dotted lines). (b) Mismatch between the extracted modes and the symmetric and antisymmetric parts of the measured field. (c) Group velocity and (d) coupling length calculated with MPB.

Image of FIG. 2.
FIG. 2.

Results for the antisymmetric coupler. Notations are the same as in Fig. 1, except that effective refractive index in simulations is and (b) shows a mismatch between extracted modes superposition and the measured field.

Image of FIG. 3.
FIG. 3.

[(a)–(d)] Experimental intensity (top subplots) and phase (bottom subplots) profiles of near-field electric field measurements for the symmetric coupler at frequencies of (a) 7.5, (b) 8.38, (c) 9.11, and (d) 9.16 GHz. The corresponding group velocities of propagating modes according to Fig. 1(c) are (a) (mode 1) and (mode 2), (b) (mode 1) and (mode 2), and (c) (mode 2).

Image of FIG. 4.
FIG. 4.

[(a)–(d)] Experimental intensity (top subplots) and phase (bottom subplots) profiles of the antisymmetric coupler at frequencies of (a) 8, (b) 8.5, (c) 8.885, and (d) 8.95 GHz. The corresponding group velocities of propagating modes according to Fig. 1(c) are (a) (mode 1) and (mode 2), (b) (mode 1) and (mode 2), and (c) (modes 1 and 2).

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/content/aip/journal/apl/98/6/10.1063/1.3553785
2011-02-09
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Observation of tunneling of slow and fast electromagnetic modes in coupled periodic waveguides
http://aip.metastore.ingenta.com/content/aip/journal/apl/98/6/10.1063/1.3553785
10.1063/1.3553785
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