Speaker
Description
Future wireless communications systems are driving system operating frequencies to the 100 - 500 GHz region. The stringent demands of 5G and 5G+ systems are accelerating the development of new sources and devices, such as resonators and filters. We report here the realization of dynamic filters through multidimensional microplasma photonic crystals. These crystals comprise spatially-periodic arrays of metallo-dielectric structures that themselves act as static photonic crystals. Embedded microplasma photonic crystals, reconfigured electronically, enable the design dynamic, band-stop filters with bandwidths from 300 MHz to 4.2 GHz and band-pass filters with bandwidths of 400 MHz to 3.9 GHz over the span of 120 - 170 GHz. The rotational symmetry and longitudinal symmetry of these crystals have been observed at 138 GHz. Coupling microplasma photonic crystals with metallo-dielectric photonic crystals enable functionality extending well beyond that available with conventional photonic crystals.
