Journal ArticleDOI
Design and Validation of an All-Dielectric Metamaterial Medium for Collimating Orbital-Angular-Momentum Vortex Waves at Microwave Frequencies
Jianjia Yi,Guo Mingtao,Rui Feng,Badreddine Ratni,Lina Zhu,Douglas H. Werner,Shah Nawaz Burokur +6 more
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TLDR
In this article, the authors proposed an innovative method for collimating vortex waves at microwave frequencies, based on transformation optics, which can reduce the divergence angle of vortex waves over a wide bandwidth, and collimate vortex beams with multiple modes.Abstract:
Vortex waves have potential applications in wireless communication, because of their advantages in improving channel-transmission efficiency. However, the peculiar divergence of vortex waves seriously limits their propagation distance for communication. Thus the authors propose an innovative method for collimating vortex waves at microwave frequencies, based on transformation optics. Their all-dielectric device can reduce the divergence angle of vortex waves over a wide bandwidth, and collimate vortex beams with multiple modes.read more
Citations
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Journal ArticleDOI
A Review of Orbital Angular Momentum Vortex Beams Generation: From Traditional Methods to Metasurfaces
TL;DR: In this article, a review of the generation of vortex beams carrying orbital angular momentum in the microwave domain is presented, which rely on two main methods; plane wave to vortex wave conversion and direct generation using radiating antennas.
Journal ArticleDOI
Thermally tunable terahertz vortex beam generator based on an InSb metasurface
TL;DR: In this article, a thermally tunable dielectric metasurface composed of InSb cylindrical micropillars is proposed to generate vortex beam in the terahertz region.
Journal ArticleDOI
Physical Layer Secure Communication Using Orbital Angular Momentum Transmitter and a Single-Antenna Receiver
TL;DR: This work presents a novel method of OAM-based radio communication with enhanced physical layer security that requires only a single-antenna receiver, and proposes a communication system that simultaneously uses modes 0 and +1 of the OAM beamformer.
Journal ArticleDOI
Launcher of high-order Bessel vortex beam carrying orbital angular momentum by designing anisotropic holographic metasurface
Xiangshuai Meng,Xiaoming Chen,Xiaoming Chen,Lin Yang,Wei Xue,Anxue Zhang,Wei E. I. Sha,Qiang Cheng +7 more
TL;DR: In this paper, an ultra-low profile anisotropic holographic metasurface is proposed to generate a linearly polarized high-order Bessel vortex beam carrying orbital angular momentum with predesigned topological charge.
Journal ArticleDOI
A Low-Divergence Circularly Polarized Dual-Mode OAM Antenna Based on Higher Order Laguerre–Gaussian Modes
Yuan-Long Li,Kwai-Man Luk +1 more
TL;DR: In this paper, an open resonator antenna for orbital angular momentum (OAM) generation and dual-mode application is proposed, where eight aperture coupled patch antenna elements are used to excite two higher-order Laguerre-Gaussian HE21 modes.
References
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Journal ArticleDOI
Orbital angular momentum of light and the transformation of Laguerre-Gaussian laser modes.
TL;DR: Laser light with a Laguerre-Gaussian amplitude distribution is found to have a well-defined orbital angular momentum and an astigmatic optical system may be used to transform a high-order LaguERre- Gaussian mode into aHigh-order Hermite-Gaussia mode reversibly.
Journal ArticleDOI
Metamaterial Electromagnetic Cloak at Microwave Frequencies
David Schurig,Jack J. Mock,B.J. Justice,Steven A. Cummer,John B. Pendry,Anthony F. Starr,David R. Smith +6 more
TL;DR: This work describes here the first practical realization of a cloak of invisibility, constructed with the use of artificially structured metamaterials, designed for operation over a band of microwave frequencies.
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Entanglement of the orbital angular momentum states of photons
TL;DR: This work demonstrates entanglement involving the spatial modes of the electromagnetic field carrying orbital angular momentum, which provides a practical route to entangled states that involves many orthogonal quantum states, rather than just two Multi-dimensional entangled states could be of considerable importance in the field of quantum information, enabling, for example, more efficient use of communication channels in quantum cryptography.
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Orbital angular momentum: origins, behavior and applications
Alison M. Yao,Miles J. Padgett +1 more
TL;DR: In this paper, it was shown that if every polarization vector rotates, the light has spin; if the phase structure rotates and if a light has orbital angular momentum (OAM), the light can be many times greater than the spin.
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Terabit-Scale Orbital Angular Momentum Mode Division Multiplexing in Fibers
Nenad Bozinovic,Yang Yue,Yongxiong Ren,Moshe Tur,Poul Kristensen,Hao Huang,Alan E. Willner,Siddharth Ramachandran +7 more
TL;DR: The viability of using the orbital angular momentum (OAM) of light to create orthogonal, spatially distinct streams of data-transmitting channels that are multiplexed in a single fiber is demonstrated and suggest that OAM could provide an additional degree of freedom for data multiplexing in future fiber networks.