Subwavelength localization of light in waveguide structures
Kotlyar V.V., Kovalev A.A., Shuyupova Ya.O., Nalimov A.G., Soifer V.A.

Image Processing Systems Institute of the RAS,
Samara State Aerospace University

Full text of article: Russian language.

Abstract:
Modeling with FullWave and Fimmwave showed, that in gradient planar Si secant waveguides basic TE-mode can have width 0.09λ; hybrid HE11 mode can have diameter 0.03λ in a hollow silica round step waveguide; basic TM-mode have width 0.065λ in nano-slot silica waveguide; planar secant gradient microlens can imaging of two source in 0.15λ distance between them; gradient planar lens «fish eye» in mirror resonator can image point source as a spot width of 0.18λ; planar secant gradient microlens, used as round resonator, size of 6.5×5.34 mm can link two planar subwave waveguides width of 386 nm with efficiency is equal to 79% (similar round silicon have efficiency of 71%); light mode (plasmon) propagates in planar metal waveguide in slot along waveguide borders and penetrates in metal on 0.039λ (Ag); TM-mode (plasmon) propagates in argentum film and fills fully a slot in it width of 50 nm (width of mode is 0.111λ).

Key words:
superresolution, slot waveguides, wire fibers, gradient secant waveguide, round resonator, gradient secant resonator.

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