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Ray invariants, plane wave spectra, and adiabatic modes for tapered dielectric waveguides
Author(s) -
Arnold J. M.,
Felsen L. B.
Publication year - 1984
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/rs019i005p01256
Subject(s) - adiabatic process , gravitational singularity , spectral line , wedge (geometry) , physics , plane wave , cutoff , optics , uniformization (probability theory) , mode (computer interface) , plane (geometry) , computational physics , mathematics , geometry , quantum mechanics , statistics , balance equation , markov model , markov chain , computer science , operating system
In nonseparable problems resulting from the analysis of wave propagation in longitudinally varying waveguides, such as a wedge‐shaped taper, singularities appear in both ray and coupled mode treatments at the local normal mode cutoff transition. A uniformization of the local normal (adiabatic) mode is proposed, using plane wave spectra, which effectively resolves this difficulty.