Analysis and Experimental Detection of non-Topological and Topological Surface Waves at a Magnetized Plasma Interface

There exists a lot of devices used for wireless systems that require non-reciprocal components such as one-way waveguides and circulators. Several techniques have been proposed so far to break the time-reversal symmetry and achieve non-reciprocity. The application of a magnetic bias breaks the symmetry by introducing an anisotropy in the magnetic permeability of ferrites, or in the electric permittivity of plasmas. When a magnetized plasma is surrounded by a simple metallic or dielectric medium, interesting electromagnetic (EM) phenomena are seen. At the frequencies that propagation of EM waves inside plasma are not allowed (bandgaps), if one could break the time symmetry, unidirectional "non-topological" and "topological" surface waves would be excited. This presentation will present our analytical, simulation, and experimental efforts at exploiting these surface waves.