Abstract
Fractional orbital angular momentum(OAM)vortex beams present a promising way to increase the data throughput in optical communication systems.Nevertheless,high-precision recognition of fractional OAM with different propagation distances remains a significant challenge.We develop a convolutional neural network(CNN)method to realize high-resolution recognition of OAM modalities,leveraging asymmetric Bessel beams imbued with fractional OAM.Experimental results prove that our method achieves a recognition accuracy exceeding 94.3％for OAM modes,with an interval of 0.05,and maintains a high recognition accuracy above 92％across varying propagation distances.The findings of our research will be poised to significantly contribute to the deployment of fractional OAM beams within the domain of optical communications.
基金项目
National Natural Science Foundation of China(12174338)
National Natural Science Foundation of China(11874321)
维普
万方数据