Defect modes and magnetooptical activity of a one-dimensional magnetophotonic crystal

The reflection spectrum of a periodic transverse-magnetized structure containing a finite number of ferromagnet-dielectric periods has been obtained. The influence of a substitutional defect on the reflection spectrum is analyzed for normal incidence of light on the structure. It is shown that the intensity and position of the defect miniband in the bad gap of the spectrum depend on the location of the defect layer in the structure and on its type (magnetic or nonmagnetic). It is found that magnetooptical activity of the defect structure is higher than in a defect-free structure.