Title :
Efficient initial guesses for solving guided and leaky modes in dielectric rod
Author :
Siming Yang ; Jiming Song
Author_Institution :
Dept. of Electr. & Comput. Eng., Iowa State Univ., Ames, IA, USA
Abstract :
To find guided and leaky axisymmetric modes supported by the circular dielectric rod efficiently, the characteristic equation is asymptotically expanded around cutoff frequency. Accordingly, the initial guesses for different types of modes are represented using Lambert W function with different branches. The efficiency of the initial guesses is verified with accurate numerical solutions.
Keywords :
dielectric waveguides; Lambert W function; characteristic equation; cutoff frequency; dielectric rod; efficient initial guesses; guided axisymmetric modes; leaky axisymmetric modes; Accuracy; Computers; Cutoff frequency; Dielectrics; Electromagnetic waveguides; Indexes; Time factors; Asymptotic expansion; Lambert W function; guide wave; leaky wave;
Conference_Titel :
Applied Computational Electromagnetics (ACES), 2015 31st International Review of Progress in
Conference_Location :
Williamsburg, VA
