小型化涡旋光模式解复用器:原理、制备及应用

Miniaturized optical vortex mode demultiplexer:Principle,fabrication,and applications

涡旋光因其具有光学轨道角动量(orbital angular momentum,OAM)而在近二十年倍受关注.由于具有不同OAM的涡旋光相互正交,涡旋光在光通信领域展现了巨大的潜力,为未来实现高速、大容量的光通信技术提供了潜在的解决方案.本文旨在介绍涡旋光OAM模式解复用技术的基本原理、小型化器件加工方法和在光通信领域的新兴应用.首先,回顾OAM模式解复用工作原理的发展历程;随后,针对涡旋光OAM模式解复用,将介绍多种典型的小型化器件制备方法;最后探讨基于轨道角动量的涡旋光模式解复用在通信领域中的新兴应用,并对OAM模式解复用的未来发展趋势及前景进行了深入分析和展望.

Vortex beams have attracted extensive attention in recent decade due to the carried optical orbital angular momentum(OAM).Vortex beams carrying different OAM modes are orthogonal to each other,and thus have become highly promising in realizing high-capacity optical communication systems.This review is to introduce the fundamental principles of optical OAM mode demultiplexing,recent advances in the fabrication techniques and emerging applications in high-capacity optical communications.First,this review introduces the development history of the working principle of OAM mode demultiplexer.Subsequently,a variety of preparation techniques and emerging applications of OAM mode demultiplexing are discussed in detail.Finally,we provide an in-depth analysis and outlook for the future trends and prospects of the OAM mode demultiplexer.