A Novel Comb-Like Nonreciprocal Evanescent Wave Filter Based on the 1-D Ternary Magnetized Plasma Photonic Crystals

Abstract

In this article, the magnetized plasma in 1-D ternary periodic photonic crystals is utilized as a kind of single negative material whose real part of permittivity is negative. Some discrete resonant peaks with high transmittance can be observed in the transmission band due to the evanescent wave coupling between plasma layers and dielectric layers. The nonreciprocal effect can be achieved by injecting counter-propagating TM waves into the proposed structure whose time-reversal symmetry and space-reversal symmetry are broken. The transmission band of nonreciprocal evanescent waves can be modulated dynamically due to the tuning of the period number, the plasma frequency, the plasma cyclotron frequency, the filling factor of plasma, and the incident angle. The simulation results indicate that the proposed structure can achieve 100% transmission and strong nonreciprocity, which can supply multichannel unidirectional filters with theoretical references. Index Terms-1-D ternary photonic crystals (PCs), evanescent wave, magnetized plasma, nonreciprocal properties, transfer matrix method (TMM).

Design and analysis of 1D photonic crystal doped with magnetized cold plasma defect for application of single/multi-channel tunable narrowband filter

“…PhCs designed with superconducting materials offer small damping effect and reduce dielectric loss. Recently, researchers have envisioned cold plasma as a prospective material to design PhCs in the presence of external magnetic field [24,25]. Magnetic cold plasma (MCP) possesses inimitable electrical, optical, and mechanical properties, which makes it stand out compared to the conventional materials [26].…”