Nonreciprocal transmission of electromagnetic waves with nonlinear active plasmonic metasurfaces

Guo, Tianjing; Argyropoulos, Christos

doi:10.1103/physrevb.106.235418

Cited by 6 publications

(3 citation statements)

References 92 publications

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“…The magnetic-less methods have attracted considerable attention for the development of nonreciprocal devices. The introduction of the nonlinearity − by high power excitation on the structures integrated with chips is one approach to realize the nonreciprocal transmission. This method can obviate the need for an exogenous direct current (DC) feed circuit and magnetic field modulation instead of accomplishing the corresponding EM functions by modulating the energy of the incident EM waves.…”

Section: Introductionmentioning

confidence: 99%

Independent Manipulations of Transmitting and Receiving Channels by Nonreciprocal Programmable Metasurface

Li,

Wang

et al. 2024

ACS Appl. Mater. Interfaces

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The electromagnetic (EM) beam manipulations such as spatial scanning have always been the focus in information science and technology. Generally, the transmitting and receiving (T/R) beams of the same aperture should be coincident due to the reciprocal theory, and hence, more flexible controls of the spatial information are limited accordingly. Here, we propose a new approach to achieve independent controls of beam scanning in spatial T/R channels based on one aperture made by a nonreciprocal programmable metasurface. The meta-atom is designed to have independent propagation chains for T/R waves by introducing dual-direction power amplifiers (PAs) as the isolators for one-way transparency. A programmable phase shifter with a 360°coverage is loaded with the PA device in the transmitting or receiving chain to realize independent beam scanning in the T/R channels. A prototype of the proposed metasurface is fabricated, and independent beam scanning in the T/R channels is directly acquired with good performance in our measurements. In addition, a proof of concept of integrated sensing and auxiliary communications is accomplished to verify the validity of the presented method.

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Section: Introductionmentioning

confidence: 99%

Independent Manipulations of Transmitting and Receiving Channels by Nonreciprocal Programmable Metasurface

Li,

Wang

et al. 2024

ACS Appl. Mater. Interfaces

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“…With the rapid development of metasurface-based technologies, many novel designs and devices [43][44][45] aiming to achieve magnetfree non-reciprocity have been presented in recent years. The non-reciprocal behavior of Faraday rotation was realized using all-passive quasi-2D metasurface [46] with a nonlinearly loaded resonator ring, which constitutes an artificial EM wave diode and thus achieved non-reciprocal transmission. Also, the silicon metasurface [47] with nonlinear Kerr effect assisted was proposed to actualize nonreciprocal manipulation of near-infrared light.…”

Section: Introductionmentioning

confidence: 99%

“…Also, the silicon metasurface [ 47 ] with nonlinear Kerr effect assisted was proposed to actualize nonreciprocal manipulation of near‐infrared light. Recently, a metasurface‐based ultrathin non‐reciprocal transmission filter [ 48 ] at near infrared frequencies has been presented. The demonstrated plasmonic metasurface breaks the Lorentz reciprocity law at the nanoscale due to its spatially asymmetric geometry combined with enhanced nonlinear response.…”

Section: Introductionmentioning

confidence: 99%

Reconfigurable and Programmable Space Channels for Non‐Reciprocal Electromagnetic Transmissions by Active Metasurfaces

Yu Wang,

Bo Li,

Zhang

et al. 2023

Laser & Photonics Reviews

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The Control of spatial electromagnetic (EM) waves has always been an attractive prospect, especially with the emergence of metasurfaces, which introduce additional manipulating methods and degrees of freedom. In this paper, a design is proposed to realize reconfigurable and programmable space channels for non‐reciprocal transmissions of EM waves through the use of active metasurface. The layout of the chessboard pattern is preferred for constructing the metasurface, which is composed of two kinds of meta‐atoms. One type of meta‐atom is independently controlled for the transmission gain, attenuation, and phase shift, while the other type is independently controlled for the transmission attenuation and phase shift only. The use of power amplifiers (PAs) to achieve transmission gain in the meta‐atoms can actualize the performance of non‐reciprocal transmissions. The programmable operations of phase shift and attenuation in meta‐atoms can dynamically establish varied spatial channels. A prototype of the active metasurface is fabricated and measured. In the measurements, multiple types of reconfigurable and programmable non‐reciprocal transmission channels are observed clearly, verifying the validity of the proposed method.

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Hybrid graphene-plasmon gratings

Guo,

Argyropoulos

2023

Journal of Applied Physics

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Graphene can support surface plasmons with higher confinement, lower propagation loss, and substantially more tunable response compared to usual metal-based plasmonic structures. Interestingly, plasmons in graphene can strongly couple with nanostructures and gratings placed in its vicinity to form new hybrid systems that can provide a platform to investigate more complicated plasmonic phenomena. In this Perspective, an analysis on the excitation of highly confined graphene plasmons and their strong coupling with metallic or dielectric gratings is performed. We emphasize the flexibility in the efficient control of light–matter interaction by these new hybrid systems, benefiting from the interplay between graphene plasmons and other external resonant modes. The hybrid graphene-plasmon grating systems offer unique tunable plasmonic resonances with enhanced field distributions. They exhibit a novel route to realize practical emerging applications, including nonreciprocal devices, plasmonic switches, perfect absorbers, nonlinear structures, photodetectors, and optical sensors.

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Nonreciprocal transmission of electromagnetic waves with nonlinear active plasmonic metasurfaces

Cited by 6 publications

References 92 publications

Independent Manipulations of Transmitting and Receiving Channels by Nonreciprocal Programmable Metasurface

Independent Manipulations of Transmitting and Receiving Channels by Nonreciprocal Programmable Metasurface

Reconfigurable and Programmable Space Channels for Non‐Reciprocal Electromagnetic Transmissions by Active Metasurfaces

Hybrid graphene-plasmon gratings

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