Transmission of evanescent modes through a subwavelength aperture of a cylindrical waveguide. 2. The influence of dielectric properties of a real metal

Journal Article · Tue Jun 30 00:00:00 EDT 2009 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2009V039N06ABEH013959· OSTI ID:21471128

Kuznetsova, Tatiana I; Lebedev, Vladimir S ^[1]

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1. P.N. Lebedev Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)

The transmission of an evanescent light wave through the subwavelength aperture of a dielectric cylindrical metal-coated waveguide is studied. The theoretical approach to the description of the field structure in such a nanowaveguide is developed, which takes into account the transformation of the initial wave reflected from the output aperture and proves applicable when dielectric properties of a real metal are taken into account. The complex reflection coefficient of a supercritical waveguide mode from the aperture, the complex light flow and the far-field transmission coefficient are calculated for an aluminium-coated waveguide at the light wavelength of {lambda} = 488 nm. It is established that the reflection and transmission coefficients of the nanowaveguide strongly depend on the dielectric constant of its core and differ significantly for transverse-magnetic and transverse-electric modes. It is demonstrated that the characteristics of light fields under study differ essentially from those of a nanowaveguide with ideally conducting walls and the subwavelength aperture in a perfectly conducting screen. (waveguides. optical fibres)

• OSTI ID: 21471128
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Vol. 39, Issue 6; Other Information: DOI: 10.1070/QE2009v039n06ABEH013959; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALUMINIUM
APERTURES
CYLINDRICAL CONFIGURATION
DIELECTRIC MATERIALS
OPTICAL FIBERS
PERMITTIVITY
REFLECTION
SURFACE COATING
TRANSMISSION
VISIBLE RADIATION
WAVEGUIDES
WAVELENGTHS
CONFIGURATION
DEPOSITION
DIELECTRIC PROPERTIES
ELECTRICAL PROPERTIES
ELECTROMAGNETIC RADIATION
ELEMENTS
FIBERS
MATERIALS
METALS
OPENINGS
PHYSICAL PROPERTIES
RADIATIONS