Combining modal analysis and the FD-TD method in the study of dielectric waveguide junction problems

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Original languageEnglish
Pages (from-to)1230-1233
Journal / PublicationAP-S International Symposium (Digest) (IEEE Antennas and Propagation Society)
Publication statusPublished - 1989
Externally publishedYes


Title1989 IEEE Antennas and Propagation Society International Symposium
LocationRed Lion Inn
PlaceUnited States
CitySan Jose
Period26 - 30 June 1989


A technique is presented to extract the modal parameters from the FDTD (finite-difference time-domain) results in the analysis of waveguide junction problems. Using this approach, it is possible to extract the modal amplitudes of the guided modes from the FDTD field distribution. These modes can be separated from the radiated and the evanescent modes, so that the scattering at these junctions can be studied more easily. The propagation constant extracted from the scattering in a dielectric slab junction shows good agreement with the exact value.

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