Programmable nonreciprocal meta-prism
Programmable nonreciprocal meta-prism
Optical prisms are made of glass and map temporal frequencies into spatial frequencies by decomposing incident white light into its constituent colors and refract them into different directions. Conventional prisms suffer from their volumetric bulky and heavy structure and their material parameters are dictated by the Lorentz reciprocity theorem. Considering various applications of prisms in wave engineering and their growing applications in the invisible spectrum and antenna applications, there is a demand for compact apparatuses that are capable of providing prism functionality in a reconfigurable manner, with a nonreciprocal/reciprocal response. Here, we propose a nonreciprocal metasurface-based prism constituted of an array of phase- and amplitude-gradient frequency-dependent spatially variant radiating super-cells. In conventional optical prisms, nonreciprocal devices and metamaterials, the spatial decomposition and nonreciprocity functions are fixed and noneditable. Here, we present a programmable metasurface integrated with amplifiers to realize controllable nonreciprocal spatial decomposition, where each frequency component of the incident polychromatic wave can be transmitted under an arbitrary and programmable angle of transmission with a desired transmission gain. Such a polychromatic metasurface prism is constituted of frequency-dependent spatially variant transistor-based phase shifters and amplifiers for the spatial decomposition of the wave components. Interesting features include three-dimensional prism functionality with programmable angles of refraction, power amplification, and directive and diverse radiation beams. Furthermore, the metasurface prism can be digitally controlled via a field- programmable gate array (FPGA), making the metasurface a suitable solution for radars, holography applications, and wireless telecommunication systems.
physics.app-ph, physics.ins-det
Taravati, Sajjad
0026f25d-c919-4273-b956-8fe9795b31ce
Eleftheriades, George V.
280bbae6-32df-4af5-bcad-110f38ad72e7
December 2021
Taravati, Sajjad
0026f25d-c919-4273-b956-8fe9795b31ce
Eleftheriades, George V.
280bbae6-32df-4af5-bcad-110f38ad72e7
Taravati, Sajjad and Eleftheriades, George V.
(2021)
Programmable nonreciprocal meta-prism.
Scientific Reports, 11 (1), [7377].
(doi:10.1038/s41598-021-86597-1).
Abstract
Optical prisms are made of glass and map temporal frequencies into spatial frequencies by decomposing incident white light into its constituent colors and refract them into different directions. Conventional prisms suffer from their volumetric bulky and heavy structure and their material parameters are dictated by the Lorentz reciprocity theorem. Considering various applications of prisms in wave engineering and their growing applications in the invisible spectrum and antenna applications, there is a demand for compact apparatuses that are capable of providing prism functionality in a reconfigurable manner, with a nonreciprocal/reciprocal response. Here, we propose a nonreciprocal metasurface-based prism constituted of an array of phase- and amplitude-gradient frequency-dependent spatially variant radiating super-cells. In conventional optical prisms, nonreciprocal devices and metamaterials, the spatial decomposition and nonreciprocity functions are fixed and noneditable. Here, we present a programmable metasurface integrated with amplifiers to realize controllable nonreciprocal spatial decomposition, where each frequency component of the incident polychromatic wave can be transmitted under an arbitrary and programmable angle of transmission with a desired transmission gain. Such a polychromatic metasurface prism is constituted of frequency-dependent spatially variant transistor-based phase shifters and amplifiers for the spatial decomposition of the wave components. Interesting features include three-dimensional prism functionality with programmable angles of refraction, power amplification, and directive and diverse radiation beams. Furthermore, the metasurface prism can be digitally controlled via a field- programmable gate array (FPGA), making the metasurface a suitable solution for radars, holography applications, and wireless telecommunication systems.
UNSPECIFIED
2012.07525v2
- Author's Original
Text
s41598-021-86597-1
- Version of Record
More information
Submitted date: 14 December 2020
e-pub ahead of print date: 1 April 2021
Published date: December 2021
Additional Information:
Funding Information:
This work was supported in part by TandemLaunch Inc. and LATYS, Montreal, QC, Canada, and in part by the Natural Sciences and Engineering Research Council of Canada (NSERC). The authors would like to especially thank Mr. Gursimran Singh Sethi, Co-founder and Technical Leader of LATYS, and Dr. Omar Zahr, Director of Technology at TandemLaunch Inc., for their great help and support.
Keywords:
physics.app-ph, physics.ins-det
Identifiers
Local EPrints ID: 482765
URI: http://eprints.soton.ac.uk/id/eprint/482765
ISSN: 2045-2322
PURE UUID: 4970caf9-623e-43a0-9c06-c4d46f95f609
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Date deposited: 12 Oct 2023 16:42
Last modified: 30 Nov 2024 03:14
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Author:
Sajjad Taravati
Author:
George V. Eleftheriades
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