6 August 1998 Iterative method for the analysis of rectangular waveguides with external effective index correction
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Abstract
We discuss a simple, self-consistent iterative method for the analysis of rectangular waveguides with strong guidance. We show that this method removes the ambiguity of the conventional effective index method and gives a convergent value of the propagation constant both near and far from cutoff. Near the cut-off region, the accuracy can be improved by including an external effective index correction which takes into account the finite mode effect outside the waveguide.
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Yong Ma, Mee Koy Chin, Seng Tiong Ho, "Iterative method for the analysis of rectangular waveguides with external effective index correction", Proc. SPIE 3552, Fiber Optic Components and Optical Communication II, (6 August 1998); doi: 10.1117/12.318050; https://doi.org/10.1117/12.318050
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