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- Title
Metatronics-inspired high-selectivity metasurface filter.
- Authors
Lv, Qihao; Qin, Xu; Hu, Mingzhe; Li, Peihang; Zhang, Yongjian; Li, Yue
- Abstract
Metatronic circuits extend the concept of subwavelength-scaled lumped circuitry from electronics to optics and photonics, providing a distinctive design paradigm for versatile optical nanocircuits. Here, based on the design of optical nanocircuits using metatronics concept, we introduce a general approach for dispersion synthesis with metasurface to achieve high-selectivity filtering response. We theoretically and numerically demonstrate how to achieve basic circuit lumped elements in metatronics by tailoring the dispersion of metasurface at the frequency of interest. Then, following the Butterworth filter design method, the meticulously designed metasurface, acting as lumped elements, are properly stacked to achieve a near-rectangular filtering response. Compared to the conventional designs, the proposed approach can simultaneously combine high selectivity with the theoretically widest out-of-band rejection in a considerably simple and time-efficient manner of circuit assembly, similar to electronic circuits, without extensive numerical simulations and complex structures. This dispersion synthesis approach provides exciting possibilities for high-performance metasurface design and future integrated circuits and chips.
- Subjects
INTEGRATED circuits; INTEGRATED circuit design; LUMPED elements; CIRCUIT elements; ELECTRONIC circuits; LIGHT filters
- Publication
Nanophotonics (21928606), 2024, Vol 13, Issue 16, p2995
- ISSN
2192-8606
- Publication type
Article
- DOI
10.1515/nanoph-2024-0123