Nonreciprocal electromagnetic properties of composite chiral-ferrite media

The theoretical properties of a composite chiral-ferrite medium are developed. The composite is constructed from a general chiral medium and a nonreciprocal ferrite medium. Application of the reaction theorem allows proof of nonreciprocity based upon the constitutive relationships. Bohren´s decomposition is also discussed. Vector Helmholtz E and H-field equations are derived and, from these equations, reciprocal space Green´s function dyadics are found. The direct space dyadics are then determined. Characteristic dispersion equations are found from the sourceless vector phasor Helmholtz equations, E-field polarisation is obtained by projecting the E-field vector onto the polarisation plane selected. Diagonalisation of the elliptic equation through coordinate rotation allows major and minor axis determination