FDFD with eigenvalue formulation

Michael Patrushev

2016 6 27

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Hi everyone,

does anyone have experience or even a code for an FDFD eigenvalue formulation (using yee scheme of course)? I basically want to find cut off frequencies (eigenvalues) for an empty, dielectric waveguide using this formulation. I'm not sure how to construct my main Matrix for the eigenvalue equation, since I have a primary and a dual mesh.

Does the matrix row for the first point of the dual mesh come right after the last point of the primary mesh?

thanks a lot