Analysis of the features of a multifunctional device based on the regulation of the magnetic field in one-dimensional photonic crystals containing only plasma with a novel quasi-periodic structure

In this paper, the features of a multifunctional device that are realized by one-dimensional magnetized plasma photonic crystals (MPPCs) containing only the plasma regulated by the external magnetic field in an innovative quasi-periodic arrangement are studied by the transfer matrix method, which possesses the characteristics of the omnidirectional bandgap (OBG), nonreciprocity (NR), and polarization separation (PS). The effects of the magnetic field and other physical parameters including the plasma frequency and incident angle on those three properties are illustrated, respectively. The computed results demonstrate that, with the gradually increasing magnetic field, the performances of OBG and NR apparently deteriorate while the PS region expands ideally. Meanwhile, the greater presentations of OBG and PS can be gotten with the proper rise of the plasma frequency. Nevertheless, the higher the plasma frequency is, the worse the quality of NR will be observed. Furthermore, an appropriate incident angle also plays a crucial part in the display of NR and PS for the proposed structure, and these properties can be enhanced well with a larger incident angle. This new kind of MPPC has potential application in designing tunable and multifunctional optical instruments. (C) 2020 Optical Society of America