This paper presents a theory of electromagnetic (EM) wave propagation through magnetic multilayers and superlattices based on the propagation matrix P of a magnetic film. By using this maeix P, we obtined the transmission and reflection coefficients of layered magnetic media, including semi-infinite magnetic surfaces. magnetic multilayers and semiinfinite magnetic superlanices. The numerical results show that the EM modes of a magnetic layer system are excited and manifested as the shwp dips in the s-polarized reflection, and the dispersion curves of magnetic poiaritons can be measured by a method similar to the attenuated total reflection technique. The analytic dispersion relations of magnetic polaritons for arbitrary magnetic multilayer systems cue represented by lhe maeix P.
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