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Vortex-Beam Detection
Orbital angular momentum (OAM) multiplexing increases the communication bandwidth and improves the spectral efficiency. The vortex light obtained by...
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Vortex-Beam Generation Using the Optical-Fiber Method
A vortex beam generated by the optical-fiber method is composed of vector modes in an optical fiber. The analysis of vector modes in optical fiber is...
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Diffraction Characteristics of a Vortex Beam Passing Through an Optical System
This chapter focuses on analyzing the diffraction characteristics of a vortex beam after passing through a Maksutov-Cassegrain (Mak-Cass) antenna...
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Generation, Transmission, Detection, and Application of Vortex Beams
This book focuses on the key technologies supporting orbital-angular-momentum multiplexing communication: generation, transmission, detection, and...
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Propagation Characteristics of a Partially Coherent Vortex-Beam Array in Atmospheric Turbulence
In this chapter, the propagation characteristics of a partially coherent vortex beam spreading in non-Kolmogorov turbulence are studied. The form of...
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Vortex-Beam Information Exchange
Polarization-division multiplexing (PDM), wavelength-division multiplexing (WDM), time-division multiplexing (TDM), and space-division multiplexing...
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Generation of Tunable Perfect Vortex Beam by Varying Focus of Axicon-Lens Assembly
Vortex beam possess spiral phase distribution with singularity at the center. Perfect vortex (PV) beam, which is a special kind of vortex field, has...
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Vortex-Beam Spatial-Generation Method
Vortex beams have infinite dimensions, in theory. The topological charge can be taken from negative infinity to positive infinity, and as an integer...
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Properties of a Superimposed Vortex Beam
In this chapter, the generation and detection of superimposed vortex beams are discussed theoretically and experimentally. Based on the experimental...
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Vortex Beam Wave Front Correction Without Using a Wave Front Detector
When a vortex beam propagates in turbulent conditions, it experiences numerous phenomena that impact the performance of the entire communication...
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Analysis and Control of Vortex-Induced Vibrations in a Cantilever Beam Using Piezo-Stack Actuator
A mathematical model is derived to explain the flow velocity-response amplitude relations of a cylindrical cantilever beam in a fluid flow observed...
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Scattering Properties of High Order Bessel Vortex Beam by Perfect Electrical Conductor Objects
This paper investigates the scattering properties of perfect electrical conductor (PEC) objects irradiated by a high-order Bessel vortex wave. The...
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Generation of Off-Axis Different-Order Bessel Beams Using a Transmissive Metasurface
This article proposes a novel approach for generating off-axis different-order Bessel vortex beams using a transmissive metasurface. The method...
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Propagation Characteristics of Scalar Partially Coherent Vortex Beams in Atmospheric Turbulence
In this chapter, a scalar partially coherent vortex beam is derived from a Laguerre–Gaussian–Schell model (LGSM) beam to form a Laguerre–Gaussian–...
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Transmission Characteristics of Vortex Beams
This chapter introduces the horizontal and slant propagation theory of Laguerre–Gaussian (LG) and Bessel–Gaussian (BG) beams in atmospheric...
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Adaptive-Optics Correction Technology
After a vortex beam is transmitted through atmospheric turbulence, the wavefront will distort, and the light intensity and phase will be distorted...
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Reflective and Transmission Metasurfaces for Orbital Angular Momentum Vortex Waves Generation
Metasurfaces are a novel class of two-dimensional (2D) or quasi-two-dimensional (Q2D) artificial electromagnetic surfaces comprised of subwavelength...
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Propagation Characteristics of Partially Coherent Vector Vortex Beams in Atmospheric Turbulence
In this chapter, the electromagnetic Gaussian–Schell-model vortex (EGSMV) beam is obtained by the spiral phase modulation of an electromagnetic...
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Piezoelectric pump with flexible venous valves for active cell transmission
The development of organ-on-a-chip systems demands high requirements for adequate micro-pump performance, which needs excellent performance and...
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Dynamic Performance Evaluation of Variable-Speed Wind Turbine Transmission System in Non-Stationary Conditions
PurposeThe large inertia of the rotor introduced by the increasing rotor diameter occupies an indispensable status in the dynamic characteristic...
