Demonstration of free-space one-to-many multicasting link from orbital angular momentum encoding
Demonstration of free-space one-to-many multicasting link from orbital angular momentum encoding
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DOI：
10.1364/ol.44.004753
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发表时间：
2019-10-01
期刊：
影响因子：
3.6
通讯作者：
Gao, Chunqing
中科院分区：
文献类型：
--
作者：
Fu, Shiyao;Zhai, Yanwang;Gao, Chunqing
在多个用户之间分配信号时，需要进行组播。在这篇文章中，我们展示了一个基于轨道角动量（OAM）编码的自由空间一对多多播链路，其中数字信号被编码成一系列时变的OAM状态，并从一个发射机发送到不同位置的多个接收器。此外，还演示了在一个发射器中同时编码N种不同的信号，并将其同时分别发送给N种不同的接收器。作为概念验证，四种不同的灰度图像由一个发射器同时编码，并分别组播到四个不同的接收器。四个接收机的译码结果良好，显示了良好的组播性能。(C) 2019美国光学学会
Multicasting is necessary when distributing signals between multiple users. In this Letter, we demonstrate an orbital angular momentum (OAM) encoding-based free-space one-to-many multicasting link, where digital signals are encoded into a series of time-varying OAM states and transmitted from one transmitter to multiple receivers with various locations. Moreover, encoding N various signals simultaneously in one transmitter and sending them at the same time to N various receivers separately, is also demonstrated. As a proof-of-concept, four different gray images are coded by one transmitter simultaneously and multicast to four various receivers separately. The favorable decoding results returned by the four receivers show good multicasting performance. (C) 2019 Optical Society of America