Dielectric multilayer waveguides for TE and TM mode matching

D. M. Shyroki, Andrei Lavrinenko

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

We analyse theoretically for the first time to our knowledge the perfect phase matching of guided TE and TM modes with a multilayer waveguide composed of linear isotropic dielectric materials. Alongside strict investigation into dispersion relations for multilayer systems, we give an explicit qualitative explanation for the phenomenon of mode matching on the basis of the standard one-dimensional homogenization technique, and discuss the minimum number of layers and the refractive index profile for the proposed device scheme. Direct applications of the scheme include polarization-insensitive, intermodal dispersion-free planar propagation, efficient fibre-to-planar waveguide coupling and, potentially, mode filtering. As a self-sufficient result, we present compact analytical expressions for the mode dispersion in a finite, N-period, three-layer dielectric superlattice.
Original languageEnglish
JournalJournal of Optics A: Pure and Applied Optics (Print)
Volume5
Issue number3
Pages (from-to)192-198
ISSN2040-8978
DOIs
Publication statusPublished - 2003
Externally publishedYes

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