Experimental demonstration of EIT effect in the metamaterials surface plasmon-like channel

The electromagnetic properties of an MNG–DPS–MNG surface plasmon-like channel with side defect based on transmission line structure are experimentally studied. The results of simulation and experiment show that the channel with a single side defect is not transparent to electromagnetic (EM) waves because of the resonators effect. While a transmission peak appears in the channel with double side defects because of the destructive interference between the two resonance modes of the two resonators. It indicates that an evident electromagnetically induced transparency (EIT) phenomenon appears in microwave frequencies. In addition, the slow wave peculiarity of the EIT-like phenomenon in the surface plasmon-like channel is studied through the computer simulation technology (CST) simulation and time-domain measurement.