Experimental demonstration of free-space multi-state orbital angular momentum shift keying
Experimental demonstration of free-space multi-state orbital angular momentum shift keying
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DOI：
10.1364/oe.27.033111
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发表时间：
2019-11-11
期刊：
影响因子：
3.8
通讯作者：
Gao, Chunqing
中科院分区：
文献类型：
--
作者：
Fu, Shiyao;Zhai, Yanwang;Gao, Chunqing
轨道角动量（OAM）作为光子的一种新维度，在许多领域具有高维数据编码/解码的潜力。本文实验展示了一种基于8位多态OAM移位键控的自由空间数据传输系统，该系统利用包含8个不同OAM状态的多路光涡旋构成8位二进制符号。在发射机中，通过切换一系列特殊设计的全息图来实现OAM移位键控的数据编码。在接收机中，通过一个达曼涡光栅进行解码并进行图像处理。我们实验传输数据，包括一个灰度图像，在自由空间10米，显示零误码率。结果表明，未来高维大数据速率光安全通信具有广阔的发展前景。(C) 2019年美国光学学会根据OSA开放获取出版协议的条款
Orbital angular momentum (OAM), a new dimension of photons, has potentials in lots of domains as high-dimensional data coding/decoding. Here we experimentally demonstrate a free-space data transmission system based on 8 bits multi-state OAM shift keying, where multiplexed optical vortices containing 8 various OAM states are employed to constitute 8 bits binary symbols. In the transmitter, the data coding of OAM shift keying is realized by switching a series of special-designed holograms. And in the receiver, the decoding is done by a single Dammann vortex grating along with image processing. We experimentally transmit data, including a gray-scale image, in free-space for 10 meters, showing zero bit-error-rate. The demonstrated results indicate a wide prospect for the future high-dimensional large data rate optical security communications. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement