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Efficient broadband energy transfer via momentum matching at hybrid junctions of guided-waves
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10.1063/1.4753985
/content/aip/journal/apl/101/12/10.1063/1.4753985
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/12/10.1063/1.4753985
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) The momentum mismatch between Si waveguide and 50 nm PSW with Ag claddings is plotted as a function of wavelength and Si waveguide width. The waveguides are 340 nm tall and on a substrate. Johnson and Christy material model is used in an in-house finite-difference mode solver to extract momentum vectors. The mismatch between and is designated as and the mismatch between and is designated as .

Image of FIG. 2.
FIG. 2.

(a) Scanning electron microscope image of an orthogonal hybrid junction platform between Si wires () and PSW with Ag claddings (w = 50 nm, L = 1 ). The device is 340 nm tall and sits on substrate. (b) The magnitude of the propagating transverse-magnetic field on the same platform at  = 1550 nm obtained through 3D simulation using Lumerical software.

Image of FIG. 3.
FIG. 3.

Comparison between experimental and theoretical bandwidth of orthogonal junction platform between Si wires () and PSW with Ag claddings (w = 50 nm, L = 400 nm). The theoretical calculation accounts for the trapezoidal waveguide sidewalls. (Inset) Theoretical bandwidth of the same platform with vertical Si waveguide sidewalls.

Image of FIG. 4.
FIG. 4.

The power transmission through PSWs (w = 50 nm) at is plotted as a function of PSW length. The slope of the linear fit conveys information on PSW propagation loss, while the intercept at L = 0 is used to extract the coupling efficiency of the orthogonal junction.

Image of FIG. 5.
FIG. 5.

The coupling efficiency of a single hybrid orthogonal junction (inset) is plotted as a function of wavelength. The solid and dash lines represent the calculated coupling efficiency simulated using trapezoidal and rectangular Si waveguide, respectively.

Image of FIG. 6.
FIG. 6.

The propagation loss of air-filled PSW (w = 50 nm) with Ag claddings is plotted as a function of wavelength.

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/content/aip/journal/apl/101/12/10.1063/1.4753985
2012-09-20
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Efficient broadband energy transfer via momentum matching at hybrid junctions of guided-waves
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/12/10.1063/1.4753985
10.1063/1.4753985
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