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We observe metamaterial induced transparency in a single Fano resonator array. In a perfect symmetric configuration, a broad dipolar resonance is excited whereas a high Q transparency window opens as the structural symmetry is broken.
We propose diagonally arranged terahertz macrocells for the realization of high Q-factor resonators. Our results show that the double-SRR diagonal macrocell structure exhibits an improved quality factor, while a spectral collapse is noticed for the triple-SRR diagonal configuration. The experimental results are in good agreement with the simulations.
We propose polarization and angle insensitive metasurfaces for THz frequencies. The new unit cell consists of two concentric ring resonators with interdigitated fingers. The number of these fingers allows for controlling the sharpness of the bandstop resonance. A quality factor of more than 16 is observed. The experimental results are in very good agreement with the simulations.
We propose asymmetric D-split resonators, which feature a very high Q-factor, as unit cells for terahertz filters and sensors. Compared to asymmetric double split resonators, the asymmetric D-split resonators exhibit twice as high Q-factors.
We present a dielectric fibre and two splitters made of polyethylene, which are well suited for the guidance of millimeter waves. A successful construction of a 3-dB coupler and a 1 × 4 splitter is reported. The fibre has a diameter of 3 mm and offers a very low absorption of 0.03 dB/cm at a frequency of 70 GHz. Since the radiation is guided mainly inside the fibre, the waveguide is insensitive to...
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