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Terahertz Y-branch power splitters formed by one-way waveguide are investigated theoretically. For such splitters, there exists no backward reflection from the Y-junction region for incident waves because the input channel supports no backward-propagating mode, therefore the transmission efficiency is perfect in the lossless case. Moreover, by varying the applied external magnetic field, the power...
Based on a waveguide made of a subwavelength metal-block array with open slots, a kind of scanning antenna is proposed in this work. Low-frequency spoof surface plasmon polaritons (spoof SPPs) exist in this waveguide and under certain conditions, a leaky mode can be produced. The leaky mode could scan the radiation pencil-beam by angles of 53° when the input frequency changes. The leaky mode is derived...
In this report, the phenomena of low-frequency spoof surface plasmon polaritons (spoof SPPs) in a new metallic cylindrical antenna at terahertz (THz) frequencies are demonstrated. The antenna is designed as a periodic structure whose unit cell includes an open hollow ring (OHR) as compared with the conventional periodic subwavelength corrugated metallic wire (PSCMW) with cylindrical structure. Near-...
Surface magnetoplasmons (SMPs) in the three-layer structure of semiconductor, dielectric, and photonic crystal (PhC) are theoretically investigated. The PhC portion in the structure is designed properly so that its band gap covers the one-way propagation range of SMPs. In such an all-dielectric system, robust one-way propagation is available for SMPs at terahertz frequencies, and SMP band gap also...
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