Noniterative calculation of complex propagation constants in planar waveguides.
We adapt an efficient finite-difference procedure for determining complex propagation constants to the analysis of modes in planar waveguides. The method requires solving a single rather than multiple eigenvalue equations and does not require prior knowledge of either the nature of the solutions or the position of the modal eigenvalues in the complex plane.
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Cisco Systems, Inc., San Jose, California 95134, USA.
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