Analysis of cylindrical waveguide structures with circular and noncircular cross sections

Kurzfassung

In this contribution, the full-wave equivalent circuit and the discrete mode matching (DMM) method are applied to analyze dielectric waveguides and conformal striplines with circular and noncircular cross sections. To demonstrate the techniques, several applications will be shown. Optical fibers with different graded-index profiles are analyzed first. In this case, the variation of the index of refraction is modelled using several homogeneous layers. The second application is the computation of the propagation constants for the two fundamental modes in elliptical dielectric waveguides. Finally, conformal striplines with noncircular top grounds are also analyzed. The comparison of our results with commercial software and with data from other authors shows good agreement.