Defect modes in one-dimensional anisotropic photonic crystal

Abstract

We theoretically analyze the defect states in a single-defect photonic crystal composed of anisotropic dielectric materials. This structure can trap light of a given frequency range and filter only a certain frequency light. It is shown that the defect modes appear as peaks in the transmission spectrum. Their numbers, intensities, and frequency positions are extremely sensitive to the incidence angle and the orientation of the principal axes of layers constituting the superlattice and the layer defect. Our structure offers a great variety of possibilities for creating and controlling the number and transmitted intensities of defect modes. It can be a good candidate for realizing a selective electromagnetic filter.

Propagation of Electromagnetic Waves in Anisotropic Photonic Structures

“…Particularly, with the increasing of azimuthal angle, the "additional" well recognized resonant peak is appeared in the stopbands for both polarizations of the incident plane waves. It correlates with results of the paper [40];…”

Multiple omnidirectional defect modes and nonlinear magnetic-field effects in metamaterial photonic superlattices with a polaritonic defect

“…Moreover, the inclusion of defect layers in metamaterial photonic superlattices leads to the existence of defect modes, inside the zero-n gap, which have shown to be of great interest for the development of new optical filters. 18 Additionally, the excitation of multiple defect modes, of particular significance for the design and development of multichannel optical filters, [19][20][21][22] has been previously theoretically demonstrated only by considering several defects 19,21 or periodicities, 20,22 thus being a challenging experimental task.…”

Wideband THz Filtering by Graphene-Over-Dielectric Periodic Structures With and Without MgF2 Defect Layer

“…Among these, the TMM has been exploited in most of the investigations owing to its simplicity and flexibility. Interestingly, TMM can be used in isotropic as well as anisotropic mediums including disordered configurations, wherein the defect modes can be introduced with less complexity [68,69].…”