Description
Metamaterials are designed electromagnetic structures capable of reproducing interference phenomena analogous to the quantum optical effect known as electromagnetically-induced transparency (EIT). The analogous phenomenon, plasmon-induced transparency (PIT), produces a narrow spectral window where light propagates with absorption minimized, due to the destructive interference between excitation pathways. In this work, PIT behavior is modeled through an H-bar interaction of a single “bright” dipole bar and an orthogonal set of bars making a “dark” quadrupole. By adjusting the geometric arrangement and dipole-quadrupole separation, the transparency window can be manipulated for select frequencies. These structures are increasingly interesting in communications systems because of their compactness and tunability. This research is motivated by the introduction of upcoming satellite communication systems across the E-band by groups like Starlink, which will operate between the 70-76 and 81-86 GHz ranges. With clear ranges, tunability is relatively unimportant, but low losses and stable behaviors are critical, making metallic resonators appropriate. Here, although gold is not the lowest-loss material, it is used for its well-characterized electromagnetic properties, resistance to oxidation, and widespread use in metamaterial fabrication, making it a reliable reference point. Future work will focus on refining resonator geometries and exploring alternative materials to increase the quality factor to produce sharper and more selective transparency windows. Additional investigations will also examine the possibility of generating multiple transparency windows to accommodate the dual E-band communication ranges used in modern satellite systems.