摘要
涡旋声束携带的轨道角动量(orbital angular momentum,OAM)可以传递给物体,在微粒操控等方面有较好的应用前景.除此之外,涡旋声束在声学通信方面同样具有巨大的潜力.由于具有不同OAM模式值的涡旋声束相互正交,因此,将OAM模式引入传统声学通信领域,为未来实现高速、大容量及高频谱效率的水下声通信技术提供了潜在的解决方案.本文对OAM声束的研究进展进行了综述,主要介绍了涡旋声束的产生和检测方案、传输特性,及其在声通信方面的典型研究案例.最后,对OAM声束的未来发展趋势及其前景进行了分析与展望.
The orbital angular momentum(OAM)carried by acoustic vortex beam can be transmitted to objects,which has a good application prospect in particle manipulation.In addition,the acoustic vortex beam also has great potentials in acoustic communication.The acoustic vortex beams with different OAM modes are orthogonal to each other,so the OAM mode can be introduced into the traditional acoustic communication,which provides a potential solution for realizing the high-speed,large-capacity and high-spectral efficiency of underwater acoustic communication technology in future.In this paper,we summarize the research progress of acoustic vortex beam,in which we mainly introduce the generation and detection scheme of acoustic vortex beam,its transmission characteristics,and its typical research cases in communication.Finally,the future development trend and the outlook of acoustic vortex beam are also analyzed and prospected.
作者
郭忠义
刘洪郡
李晶晶
周红平
郭凯
高隽
Guo Zhong-Yi;Liu Hong-Jun;Li Jing-Jing;Zhou Hong-Ping;Guo Kai;Gao Jun(School of Computer Science and Information Engineering,Hefei University of Technology,Hefei 230009,China)
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2020年第24期13-26,共14页
Acta Physica Sinica
基金
国家自然科学基金(批准号:61775050)
中央高校基本研究经费(批准号:PA2019GDZC0098)资助的课题.
关键词
轨道角动量
涡旋声束
声通信
orbital angular momentum
acoustic vortex
acoustic communication
