Optical theory of Gaussian beam transmission through a hollow circular dielectric waveguide

Journal Article · Tue Dec 14 23:00:00 EST 1982 · Appl. Opt.; (United States)

DOI:https://doi.org/10.1364/AO.21.004533· OSTI ID:6296026

Crenn, J P

An optical theory is developed to calculate the power transmission of a Gaussian beam through a hollow circular dielectric waveguide. This theory uses Fresnel formulas of wave reflection on a dielectric wall and approximate formulas of Gaussian beam diffraction through a circular aperture. The calculation is valid for low-loss waveguides and for beams weakly diffracted by the guide aperture. These conditions are fulfilled in most of the usual cases. The results agree well with theoretical relations derived from propagation constants of modes. An application is made to the waveguides used in the infrared interferometer for the JET tokamak.

• Research Organization: Association Euratom-CEA sur la Fusion, Departement de Recherches sur la Fusion Controlee, Centre d'Etudes Nucleaires, B. P. 6, 92260 Fontenay-aux-Roses, France
• OSTI ID: 6296026
• Journal Information: Appl. Opt.; (United States), Journal Name: Appl. Opt.; (United States) Vol. 21:24; ISSN APOPA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603 -- Materials-- Properties
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700102* -- Fusion Energy-- Plasma Research-- Diagnostics
CIRCULAR CONFIGURATION
CONFIGURATION
CYANIDES
DEUTERIUM COMPOUNDS
DIELECTRIC MATERIALS
ELECTROMAGNETIC RADIATION
ELECTRON DENSITY
ENERGY LOSSES
FUNCTIONS
GAS LASERS
GAUSS FUNCTION
HYDROCYANIC ACID
HYDROGEN COMPOUNDS
INFRARED RADIATION
INORGANIC ACIDS
INTERFEROMETRY
JET REACTORS
LASER RADIATION
LASERS
LIGHT TRANSMISSION
LOSSES
MATERIALS
PLASMA DIAGNOSTICS
POWER TRANSMISSION
RADIATIONS
REFLECTION
THERMONUCLEAR REACTORS
TOKAMAK TYPE REACTORS
USES
WAVE PROPAGATION
WAVEGUIDES