斑点图案
多模光纤
光学
物理
全息术
振幅
混乱的
光纤
计算机科学
人工智能
作者
A. V. Volyar,M.V. Bretsko,Ya. Akimova,Yu. V. Egorov
出处
期刊:Computer Optics
[Samara National Research University]
日期:2021-04-01
卷期号:45 (2)
被引量:2
标识
DOI:10.18287/2412-6179-co-831
摘要
A process of mode matching in a chaotic speckle pattern without a reference beam responsible for the formation of a holographic grating was studied experimentally and theoretically. Our approach was based on measuring the amplitudes and phases of the Hermite-Gauss (HG) and Laguerre-Gauss (LG) modes in a speckle pattern formed by the radiation of a multimode gradient fiber. The speckle pattern was formed in a hologram of a spatial light modulator using a multimode gradient fiber model while taking into account the mode and polarization dispersion, as well as random phase jumps of each eigenmode. We managed to match 210 modes of the speckle pattern and restore not only the original pattern, but also each structured LG mode and the entire chain of HG eigenmodes.
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