Spatial distribution of light fields in a silicon conical waveguide

Journal Article · Fri Apr 30 04:00:00 EDT 2004 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2004V034N04ABEH002681· OSTI ID:21470517

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

---

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

The spatial distribution of monochromatic light fields is studied in a tapered silicon fibre with the subwavelength aperture. The lowest-order electric TM{sub 01} mode is analysed theoretically in a cone with perfectly reflecting metal walls filled with a light absorbing medium. Exact formulas and approximate expressions are obtained for a medium with the complex permittivity, which describe the spatial dependences of the electric and magnetic energy densities inside the cone. The behaviour of the field at the waveguide exit is analysed for the aperture diameter as small as {approx}1/30 of the wavelength. The main attention is devoted to the transmission coefficients of the probe, which were calculated for a wide range of its geometrical parameters in the wavelength region from 400 to 830 nm. It is found that silicon provides a substantial increase in the output light energy density at the optical probe end both in the IR and visible spectral regions compared to glass. (optical waveguides)

• OSTI ID: 21470517
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Journal Name: Quantum Electronics (Woodbury, N.Y.) Journal Issue: 4 Vol. 34; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
APERTURES
APPROXIMATIONS
CALCULATION METHODS
DIELECTRIC PROPERTIES
DISTRIBUTION
ELECTRICAL PROPERTIES
ELECTROMAGNETIC RADIATION
ELEMENTS
ENERGY DENSITY
FIBERS
MONOCHROMATIC RADIATION
OPENINGS
PERMITTIVITY
PHYSICAL PROPERTIES
RADIATIONS
SEMIMETALS
SILICON
SPACE DEPENDENCE
SPATIAL DISTRIBUTION
TRANSMISSION
VISIBLE RADIATION
WAVEGUIDES
WAVELENGTHS