Defect mode combs and specific optical field distribution in a multi-defect photonic crystal

The transmission spectra of a one-dimensional multi-defect photonic structure formed by the combination of identical distributed Bragg reflectors and dielectric layers (defect layers) are studied. The numerical results demonstrate the appearance of one or more defect mode combs in the photonic bandgap region of such a photonic structure. The dependence of the transmission spectrum on the total number and thicknesses of the defect layers is analyzed. The relationship between the spatial distribution of the optical field magnitude for different defect modes and the total number of defect layers is investigated. The possibility of selective suppression of defect modes by applying the absorbing layers is demonstrated.