摘要
单模光纤的通信容量已接近香农极限,传统的多路复用技术很难再提升通信容量。近年来,一种新型模分复用技术——光轨道角动量(OAM)复用被提出,与其他复用技术相结合,可以极大地提升通信容量和提高频谱效率。轨道角动量光通信的关键技术包括轨道角动量光束的产生、传输介质以及复用/解复用器件,文中对这些关键技术的最新进展和发展趋势进行了综述。
The communication capacity of single-mode fiber is approaching the shannon limit,thus it is difficult to improve the communication capacity by traditional multiplexing technologies.In recent years,the orbital angular momentum(OAM)multiplexing as a new mode division multiplexing technology has been proposed.Combined with other multiplexing technologies,it can greatly improve the communication capacity and the spectral efficiency.The research progresss on the key technologies of orbital angular momentum optical communication are reviewed from the perspectives of the generation of orbital angular momentum beam,the transmission medium and the multiplexing/demultiplexing system.
作者
陈鹤鸣
白秀丽
CHEN Heming;BAI Xiuli(College of Electronic and Optical Engineering&College of Microelectronics,Nanjing University of Posts and Telecommunications,,Nanjing 210023,China;School of Electronic Engineering,Nanjing Xiaozhuang University,Nanjing 211171,China)
出处
《南京邮电大学学报（自然科学版）》
北大核心
2020年第5期125-133,共9页
Journal of Nanjing University of Posts and Telecommunications：Natural Science Edition
基金
国家自然科学基金(61571237)
江苏省自然科学基金(BK20151509)资助项目。
关键词
轨道角动量
模分复用
OAM光束的产生
传输介质
复用/解复用
orbital angular momentum(OAM)
mode division multiplexing
generation of OAM beams
transmission medium
multiplexing/demultiplexing
