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Mode matching in the field speckle pattern after graded-index fibers
preprintposted on 2023-11-30, 20:10 authored by A. Volyar, M. Bretsko, Ya. Akimova, Yu. Egorov
We have developed and implemented a new technique of parallel information transmission through a multimode graded-index fiber in real time based on the approach of intensity moments. To do this, it was necessary to measure the spectrum of the mode amplitudes and phases in the Hermite-Gauss basis. At the same time, informational entropy and the degree of spatial coherence were measured.