Multipole engineering for enhanced backscattering modulation
| Autor: | Konstantin Ladutenko, Pavel Ginzburg, Alexey P. Slobozhanyuk, Sergey Krasikov, Andrey Bogdanov, Ildar Yusupov, Diana Shakirova, Dmitry Filonov, Dmitry Dobrykh, Anna Mikhailovskaya |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Physics
business.industry FOS: Physical sciences Applied Physics (physics.app-ph) 02 engineering and technology Physics - Applied Physics 021001 nanoscience & nanotechnology 01 natural sciences Amplitude modulation Resonator Orders of magnitude (time) Interference (communication) Modulation 0103 physical sciences Optoelectronics Wireless 010306 general physics 0210 nano-technology business Multipole expansion Energy (signal processing) |
| Popis: | An efficient modulation of backscattered energy is one of the key requirements for enabling efficient wireless communication channels. Typical architectures, being based on either electronically or mechanically modulated reflectors, cannot be downscaled to subwavelengths dimensions by design. Here we show that integrating high-index dielectric materials with tunable subwavelength resonators allows achieving an efficient backscattering modulation, keeping a footprint of an entire structure small. An interference between high-order Mie resonances leads to either enhancement or suppression of the backscattering, depending on a control parameter. In particular, a ceramic core-shell, driven by an electronically tunable split ring resonator was shown to provide a backscattering modulation depth as high as tens of the geometrical cross-section of the structure. The design was optimized towards maximizing reading range of radio frequency identification (RFID) tags and shown to outperform existing commercial solutions by orders of magnitude in terms of the modulation efficiency. The proposed concept of multipole engineering allows one to design a new generation of miniature beacons and modulators for wireless communication needs and other relevant applications. |
| Databáze: | OpenAIRE |
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