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Tao FU (傅涛), Tianbo YANG (杨天波), Yinbing AN (安银冰), Qi LI (李琦), Zilan DENG (邓子岚). An active tunable Fano switch in a plasma-filled superlattice array[J]. Plasma Science and Technology, 2021, 23(7): 75502-075502. DOI: 10.1088/2058-6272/abf54a
Citation: Tao FU (傅涛), Tianbo YANG (杨天波), Yinbing AN (安银冰), Qi LI (李琦), Zilan DENG (邓子岚). An active tunable Fano switch in a plasma-filled superlattice array[J]. Plasma Science and Technology, 2021, 23(7): 75502-075502. DOI: 10.1088/2058-6272/abf54a

An active tunable Fano switch in a plasma-filled superlattice array

  • We propose a Fano switch arising from the superlattice array of a plasma-filled quartz tube, which can be tuned and reconfigured by the plasma density in the tube. The generation of the switch depends on a Fano band that is induced by the interference between the Mie resonance in an isolated cylinder and Bragg scattering in a periodic array. The underlying dispersion characteristics reveal that a localized tunable flat band corresponding to the Mie resonance plays an important role in the appearance of the Fano resonance. This active tunable switch can be potentially applied to microwave communications as a single-pole multi-throw switch and to monitor environmental variables that impact the plasma density.
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