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.

Discusses Generation, Transmission, Detection, and Application of Vortex Beams Combines both theory and experiment to verify the correctness of the theory Provides new research ideas and results, compared with other studies worldwide

Autorentext
Xizheng Ke is Doctor of Science, Second-level Professor, Head of the discipline of information and communication systems of Xi'an University of Technology, and Deputy Director of the Key Laboratory of Military-civilian Joint Construction of Intelligent Cooperative Networks in Shaanxi Province. He is Famous Teacher in Shaanxi Province, Fellow of Chinese Institute of Electronics, Foreign academician of the Russian Academy of Natural Sciences Director of Chinese Optical Engineering Society, Executive Director of Shaanxi Optical Society. He received a bachelor's degree from Shaanxi Institute of Technology in 1983 and a doctor of science degree from the University of Chinese Academy of Sciences in 1996. From 1997 to 2002, he conducted post-doctoral research at Xidian University and the Second Artillery Engineering College. Dr. Xizheng Ke is Member of editorial board of "Journal of Electronics", "Infrared and Laser Engineering", "Journal of Electronic Measurement and Instrument", "Laser Technology", "Applied Optics", "Journal of Xi'an University of Technology", "Journal of Time and Frequency", and "Journal of Atmospheric Science Research". He is National Science and Technology Award Review Expert and Member of the disciplinary review group of the Shaanxi Academic Degrees Committee. In 2000, Dr. Xizheng Ke won the Outstanding Young Scholar Award of the Chinese Academy of Sciences. In 2009, he was awarded the title of "Excellent Science and Technology Commissioner of Guangdong Province by the Ministry of Science and Technology". In 2015, he was awarded the title of "A Golden Phoenix on Green Poplar" in Yangzhou City. In 2018, he won the China Industry-University-Research Innovation Award, and in 2019, he won the China Industry-University-Research Innovation Achievement Award. Since 2001, he has won 16 provincial and ministerial science and technology awards, including 1 first prize and 5 second prizes. He has obtained more than 20 nationally authorized invention patents, published 9 monographs in Science Press, and published more than 400 academic papers in domestic and foreign journals. More than 30 Ph.D. candidates have been cultivated in his direction.

Inhalt
Introduction.- Vortex-beam spatial-generation method.- Vortex-beam generation using the optical-fiber method.- Superposition characteristics of high-order radial LaguerreGaussian 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.