Title :
Analytical calculation of cutoff wavenumbers of dielectric waveguides with elliptical cross section
Author :
Zouros, Grigorios P. ; Roumeliotis, John A.
Author_Institution :
Sch. of Electr. & Comput. Eng., Nat. Tech. Univ. of Athens, Athens, Greece
fDate :
Oct. 31 2012-Nov. 2 2012
Abstract :
The cutoff wavenumbers of the elliptical dielectric waveguide are obtained through analytical expressions, when the eccentricity h of the elliptical core is specialized to small values. In this case, analytical, closed-form algebraic expressions, free of Mathieu functions, are obtained for the cutoff wavenumbers. These expressions are valid for every different value of the indices s and n, corresponding to every higher-order hybrid mode. Numerical results are given for various higher-order modes, as well as a comparison with the exact solution.
Keywords :
optical waveguides; Mathieu functions; cutoff wavenumbers; elliptical core; elliptical cross section; elliptical dielectric waveguides; higher order hybrid mode; Dielectrics; Equations; Europe; Magnetic cores; Mathematical model; Optical waveguides; Closed-form solution; optical waveguides;
Conference_Titel :
Radar Conference (EuRAD), 2012 9th European
Conference_Location :
Amsterdam
Print_ISBN :
978-1-4673-2471-7
