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Optimizing terahertz surface plasmons of a monolayer graphene and a graphene parallel plate waveguide using one-dimensional photonic crystal
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10.1063/1.4813415
/content/aip/journal/jap/114/3/10.1063/1.4813415
http://aip.metastore.ingenta.com/content/aip/journal/jap/114/3/10.1063/1.4813415
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Panel (a) represents side view of the 1D PC, which is composed of stack of alternating layers of SiO and Si. “d” ( ) is the periodicity of the 1D PC and and are the width of SiO and Si layers, respectively. Panel (b) depicts side view of monolayer graphene on the 1D PC as a substrate [structure 1bA]. Panels (c) [structure 1cS] and (d) [structure 1dA] show side view of the monolayer graphene in the presence of the 1D PC as a substrate and a cladding medium. It should be noted that only the first period of the 1D PC is presented in panels (b)–(d). Moreover, “A” (“S”) label refers to asymmetric (symmetric) structure, respectively.

Image of FIG. 2.
FIG. 2.

Panel (a) represents side view of the graphene PPWG, the thick black lines placed at and separated by 3c-SiC of width , on as a substrate [structure 2aA]. The 1D PC is the same as that of depicted in Fig. 1(a) . Panel (b) depicts side view of the graphene PPWG on the 1D PC as a substrate [structure 2bA]. Panels (c) [structure 2cS] and (d) [structure 2dA] show side view of the graphene PPWG in the presence of the 1D PC as a substrate and a cladding medium. Note that, same as in Fig. 1 , only the first period of the 1D PC is presented in panels (b)–(d). Moreover, “A” (“S”) label refers to asymmetric (symmetric) structure, respectively.

Image of FIG. 3.
FIG. 3.

Aqua (pass bands) and white (forbidden frequencies) represent the projected band structure of the 1D PC for TM polarization. Labeled as 1aA, 1bA, 1cS, and 1dA SPs are the dispersions of the SPs supported by the structures 1aA, 1bA, 1cS, and 1dA, respectively. The SPs with , correspond to , are not represented.

Image of FIG. 4.
FIG. 4.

Corresponding normalized propagation length of the SPs represented in Fig. 3 .

Image of FIG. 5.
FIG. 5.

Corresponding normalized localization length () of the SPs represented in Figs. 3 and 4 .

Image of FIG. 6.
FIG. 6.

Panels (a)–(c) represent dispersion curve, normalized propagation and localization length of SPs supported by the “structure 2aA” (labeled as 2aA SPs) and “structure 2bA” (labeled as 2bA SPs), respectively.

Image of FIG. 7.
FIG. 7.

Panels (a)–(c) represent dispersion curve, normalized propagation and localization length of the SPs supported by the “structure 2cS” (labeled as 2cS SPs) and 2aA SPs.

Image of FIG. 8.
FIG. 8.

Panels (a)–(c) represent dispersion curve, normalized propagation and localization length of SPs supported by the “structure 2dA” (labeled as 2dA SPs) and 2aA SPs.

Image of FIG. 9.
FIG. 9.

Panels (a) and (b) represent normalized propagation and localization length of “2cS SPs” when “D” is taken to be 10 nm and 1 m.

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/content/aip/journal/jap/114/3/10.1063/1.4813415
2013-07-15
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Optimizing terahertz surface plasmons of a monolayer graphene and a graphene parallel plate waveguide using one-dimensional photonic crystal
http://aip.metastore.ingenta.com/content/aip/journal/jap/114/3/10.1063/1.4813415
10.1063/1.4813415
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