title: Magnetic-field tunable multichannel filter in a plasma photonic crystal at microwave frequencies.
abstract: The microwave magnetic-field tunable filtering properties in a multichannel filter based on use of a one-dimensional finite magnetized plasma photonic crystal (PPC) are theoretically investigated. The considered PPC has a structure of air/(AB)N/air, where A is a dielectric layer, B is a plasma layer, and N is the stack number. First, in the absence of an externally applied magnetic field, the structure can work as a multichannel filter whose channel number is equal to N-1 for N>1. Next, in the presence of an externally applied field, the filtering properties become tunable, i.e., the channel frequencies can be shifted as a function of the applied magnetic field. We find that the effect of the magnetic field will cause the channel frequencies to be blue-shifted or red-shifted depending on the orientation of the applied magnetic field.
authors.forename: Tsung-Wen
authors.initials: TW
authors.lastname: Chang
authors.forename: Jia-Ren Chang
authors.initials: JR
authors.lastname: Chien
authors.forename: Chien-Jang
authors.initials: CJ
authors.lastname: Wu