Beschreibung:
This book focuses on the key technologies supporting orbital-angular-momentum multiplexing communication: generation, transmission, detection, and application of vortex beams. A series of methods for generating vortex beams are described and compared in detail. Laguerre-Gaussian and Bessel-Gaussian beams are taken as examples to introduce the transport properties of vortex beams in atmospheric turbulence. The authors show that superposition of vortex beam state, interference, diffraction, and grating can realize the detection of the topological charge of vortex beams. The authors also introduce the application of vortex beams in optical communication and the transmission characteristics of partially coherent vortex beams in atmospheric turbulence. Finally, the authors describe vortex beam information exchange and channel reconstruction.
This book focuses on the key technologies supporting orbital-angular-momentum multiplexing communication: generation, transmission, detection, and application of vortex beams. A series of methods for generating vortex beams are described and compared in detail. Laguerre-Gaussian and Bessel-Gaussian beams are taken as examples to introduce the transport properties of vortex beams in atmospheric turbulence. The authors show that superposition of vortex beam state, interference, diffraction, and grating can realize the detection of the topological charge of vortex beams. The authors also introduce the application of vortex beams in optical communication and the transmission characteristics of partially coherent vortex beams in atmospheric turbulence. Finally, the authors describe vortex beam information exchange and channel reconstruction.
Introduction.- Vortex-beam spatial-generation method.- Vortex-beam generation using the optical-fiber method.- Superposition characteristics of high-order radial Laguerre–Gaussian beams.- Transmission Characteristics of Vortex Beams.- Adaptive-optics correction technology.- Crosstalk analysis of an OAM-multiplexing system under atmospheric turbulence.- Properties of a superimposed vortex beam.- Vortex-beam detection.- Diffraction characteristics of a vortex beam passing through an optical system.- Propagation characteristics of a partially coherent vortex-beam array in atmospheric turbulence.- Propagation characteristics of scalar partially coherent vortex beams in atmospheric turbulence.- Propagation characteristics of partially coherent vector vortex beams in atmospheric turbulence.- Vortex-beam information exchange.
