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Related papers: Fractal OAM Generation and Detection Schemes

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We describe a novel approach for generating light beams that carry orbital angular momentum (OAM) by means of total internal reflection in an isotropic medium. A continuous space-varying cylindrically symmetric reflector, in the form of…

A data center (DC) is one of the main building blocks of modern information technology. Any intra DC network should strive to achieve high throughput, while continuing to be flexible in responding to changing traffic patterns. Optical…

Instrumentation and Detectors · Physics 2017-02-16 Judy Kupferman , Shlomi Arnon

Recent progress in direct photodetection of light orbital angular momentum (OAM) based on the orbital photogalvanic effect (OPGE) provides an effective way for on-chip direct electric readout of orbital angular momentum, as well as…

Orbital Angular Momentum (OAM)-based communication systems offer high-capacity multiplexing in line-of-sight (LOS) scenarios; yet, their performance is sensitive to nodal misalignment, which disrupts modal orthogonality, hindering the data…

Signal Processing · Electrical Eng. & Systems 2026-01-27 Poorya Mollahosseini , Yasaman Ghasempour

In orthogonal time sequency multiplexing (OTSM) modulation, the information symbols are conveyed in the delay-sequency domain upon exploiting the inverse Walsh Hadamard transform (IWHT). It has been shown that OTSM is capable of attaining a…

Information Theory · Computer Science 2023-07-07 Zeping Sui , Shefeng Yan , Hongming Zhang , Sumei Sun , Yonghong Zeng , Lie-Liang Yang , Lajos Hanzo

Orbital angular momentum (OAM) of photons is carried upon the wave front of an optical vortex and is important in physics research due to its fundamental degree of freedom. As for the interaction with materials, the optical OAM was shown to…

Applied Physics · Physics 2018-09-17 Yoshiki Kohmura , Kei Sawada , Masaichiro Mizumaki , Kenji Ohwada , Tetsuya Ishikawa

Characterizing the orbital angular momentum (OAM) of a vortex beam is critically important for OAM-encoded data transfer. However, in typical OAM-based applications where vortex beams transmit through diffusers, the accompanying scattering…

The orbital angular momentum (OAM) of light and matter waves is a parameter that is getting increasingly more attention over the past couple of years. Beams with a well defined OAM, the so-called vortex beams, are applied already in e.g.…

Optics · Physics 2016-02-10 Roeland Juchtmans , Jo Verbeeck

Orbital angular momentum (OAM)-carrying beams have gained significant attention in recent years due to their unique properties and potential to improve spectral efficiency and data transmission rates in optical communication systems.…

Conventionally, intrinsic orbital angular momentum (OAM) is associated with phase vortices. However, our investigation into the propagation dynamics of 2D superimposed catastrophe beams, termed cyclone catastrophe beams (CCBs), reveals that…

In this paper, we present a tailored lens and a tailored reflector in order to reduce the large beam divergence inherent to Orbital Angular Momentum waves (OAM waves-Vortex waves) that are generated by an Uniform Circular Patch Antenna…

The capability of direct photocurrent detection of orbital angular momentum (OAM) of light has recently been realized with topological Weyl semimetal, but limited to near infrared wavelength range. The extension of direct OAM detection to…

Vortex beams carrying orbital angular momentum are extensively studied owing to its potential to expand channel capacity of microwave and optical communication. By utilizing the Pancharatnam-Berry phase concept, an ultra-wideband single…

Applied Physics · Physics 2019-11-05 Ling-Jun Yang , Sheng Sun , Wei E. I. Sha

Spatiotemporal toroidal orbital angular momentum (OAM) beams are a developing class of spatiotemporal beams which have key applications within quantum physics, metrology, imaging and optical manipulation. However, the full realization of…

With Rytov approximation theory, we derive the analytic expression of detection probability of Airy vortex beam carrying orbital angular momentum (OAM) through an anisotropic weak oceanic turbulence. We investigate the influences of…

Classical Physics · Physics 2018-10-17 Xinguang Wang , Zhen Yang , Shengmei Zhao

Orbital angular momentum (OAM) has gradually become a research hotspot in radar, communication and other fields because of its phase distribution. However it encounters some problems in the real practice owing to its inherent…

Classical Physics · Physics 2020-06-02 Zelin Zhu , Shilie Zheng , Xiaowen Xiong , Yuqi Chen , Xiaofeng Jin , Xianbin Yu , Xianmin Zhang

In this diploma thesis we study the characteristics of electromagnetic fields carrying orbital angular momentum (OAM) by analyzing and utilizing results achieved in optics and then apply them to the radio domain to enable innovative radio…

Classical Physics · Physics 2009-05-05 Johan Sjöholm , Kristoffer Palmer

This paper presents an analysis of the performance of a Gaussian optical beam as it propagates through the turbulent underwater optical channel (UWOC) under the weak turbulence regime, where optical signal experiences significant fading and…

Optics · Physics 2025-12-03 Shideh Tayebnaimi , Kamran Kiasaleh

Electromagnetic waves carrying orbital angular momentum (OAM) have found many applications. This work reports a broadband millimeter wave OAM generator applying a dielectric metasurface with high-refractive-index dielectric elements…

Applied Physics · Physics 2018-01-22 Fan Bi , Zhongling Ba , Yunting Li , Xiong Wang

This paper introduces a groundbreaking Line-of-Sight (LoS) Multiple-Input Multiple-Output (MIMO) communication architecture leveraging non-traditional Orbital Angular Momentum (OAM) beams. Challenging the conventional paradigm of…

Signal Processing · Electrical Eng. & Systems 2024-08-21 Yufei Zhao , Xiaoyan Ma , Yong Liang Guan , Yile Liu , Afkar Mohamed Ismail , Xiaobei Liu , Siew Yam Yeo , Chau Yuen