Research Status and Prospects of Orbital Angular Momentum Technology in Wireless Communication

Zheng, Feng; Chen, Yijian; Ji, Shengwei; Duan, Gaoming

doi:10.2528/pier20091104

Cited by 20 publications

(7 citation statements)

References 88 publications

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“…Parallel to polarization state measurement, detection of spin and orbital angular momenta of vortex beams is also a tricky problem in integrated optical systems [273,379–382] . In previous sections, it has been mentioned that some metacouplers can sort and detect a limited number of orbital angular momentum modes [238–241,359] .…”

Section: Nascent Sp Applicationsmentioning

confidence: 99%

Meta-optics inspired surface plasmon devices

Lang

Jiang

et al. 2023

Photonics Insights

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Surface plasmons (SPs) are electromagnetic surface waves that propagate at the interface between a conductor and a dielectric. Due to their unique ability to concentrate light on two-dimensional platforms and produce very high local-field intensity, SPs have rapidly fueled a variety of fundamental advances and practical applications. In parallel, the development of metamaterials and metasurfaces has rapidly revolutionized the design concepts of traditional optical devices, fostering the exciting field of meta-optics. This review focuses on recent progress of meta-optics inspired SP devices, which are implemented by the careful design of subwavelength structures and the arrangement of their spatial distributions. Devices of general interest, including coupling devices, on-chip tailoring devices, and decoupling devices, as well as nascent SP applications empowered by sophisticated usage of meta-optics, are introduced and discussed.

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Section: Nascent Sp Applicationsmentioning

confidence: 99%

Meta-optics inspired surface plasmon devices

Lang

Jiang

et al. 2023

Photonics Insights

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“…Optical communication is another area where the OAM beams can increase the capacity of channels [2,3], enhance the encoding, and provide other benefits [4]. Microwave vortex beams are also of interest for wireless communication [5][6][7] and radars [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Finite-aperture Microwave Bessel Beams with Vortex Twisting, Fracturing, and Dynamic Phase-shift Control

Yurchenko¹,

Çiydem²,

Koc³

2022

PIER C

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Finite-aperture microwave vortex beams of various structures in the near-, middle-, and far-field propagation zones have been simulated. The decay of external sidelobes leading to the end of non-diffractive propagation within a fraction of the near-field zone is observed. A ring source of the vortex beams with phase-shift and frequency-sweep control of angular modes and polarization patterns through the use of patch antenna arrays of varying polarization is suggested. A new form of the beam wavefront variation with azimuthal undulation has been proposed that allows one to significantly diversify and dynamically control the beam structure. The consequences of a limited number of antenna patches in a circular array have been considered. The effects of a gradual drop of radiation power along the array and the use of multiple feed points for improving the beams have been simulated.

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“…Correspondingly, their near-field directionality is determined by the spinmomentum locking and can be understood from the perspective of quantum spin Hall effect of light. [32][33][34][35] Notably, recent studies show that the near-field directionality can go beyond the rudimentary spin-momentum locking, if the excitation source is the composite electric and magnetic dipoles. [23][24][25] For example, Huygens and Janus dipoles are constructed by the orthogonal electric and magnetic dipoles, which are in phase and 90°out of phase to each other, respectively.…”

Section: Introductionmentioning

confidence: 99%

Toggling Near‐Field Directionality via Polarization Control of Surface Waves

Zhong

Lin

Jiang

et al. 2021

Laser & Photonics Reviews

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Directional excitation of guidance modes is central to many applications ranging from light harvesting, optical information processing to quantum optical technology. Of paramount interest, especially, the active control of near‐field directionality provides a new paradigm for the real‐time on‐chip manipulation of light. Here, it is found that for a given dipolar source, its near‐field directionality can be toggled efficiently via tailoring the polarization of surface waves that are excited, for example, via tuning the chemical potential of graphene in a graphene‐metasurface waveguide. This finding enables a feasible scheme for the active near‐field directionality. Counterintuitively, it is revealed that this scheme can transform a circular electric/magnetic dipole into a Huygens dipole in the near‐field coupling. Moreover, for Janus dipoles, this scheme enables actively flipping their near‐field coupling and non‐coupling faces.

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Research Status and Prospects of Orbital Angular Momentum Technology in Wireless Communication

Cited by 20 publications

References 88 publications

Meta-optics inspired surface plasmon devices

Meta-optics inspired surface plasmon devices

Finite-aperture Microwave Bessel Beams with Vortex Twisting, Fracturing, and Dynamic Phase-shift Control

Toggling Near‐Field Directionality via Polarization Control of Surface Waves

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