Title :
Exact Equivalent Straight Waveguide Model for Bent and Twisted Waveguides
Author :
Shyroki, Dzmitry M.
Author_Institution :
Tech. Univ. of Denmark, Kgs. Lyngby
Abstract :
Exact equivalent straight waveguide representation is given for a waveguide of arbitrary curvature and torsion. No assumptions regarding refractive index contrast, isotropy of materials, or particular morphology in the waveguide cross section are made. This enables rigorous full-vector modeling of in-plane curved or helically wound waveguides with use of available simulators for straight waveguides without the restrictions of the known approximate equivalent-index formulas.
Keywords :
waveguide discontinuities; waveguide theory; bent waveguides; exact equivalent straight waveguide model; helically wound waveguides; in-plane curved waveguides; rigorous full-vector modeling; straight waveguides; twisted waveguides; Electromagnetic waveguides; Finite element methods; Maxwell equations; Morphology; Optical waveguides; Permeability; Permittivity; Refractive index; Tensile stress; Wounds; Coordinate transformation; equivalent straight waveguide; helical coordinates;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.2007.914637
