Mathematical model of completely optical system for detection of mode propagation parameters in an optical fiber with few-mode operation for adaptive compensation of mode coupling
V.S. Lyubopytov, A.Z. Tlyavlin, A.Kh. Sultanov, V.Kh. Bagmanov, S.N. Khonina, S.V. Karpeev, N.L. Kazanskiy

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Full text of article: Russian language.

DOI: 10.18287/0134-2452-2013-37-3-352-359

Pages: 352-359.

Abstract:
In this article we propose a method for optical-domain compensation of distortions caused by the mode coupling in communication systems with mode division multiplexing. The proposed method is based on the spatial-spectral interrelation between the mode composition and the laser beam electromagnetic field distribution and on the using of a real-time programmable diffractive optical element implemented with a spatial light modulator. This method is promising to reduce the computational complexity of MDM-systems and increase significantly the modal channel baud rate due to exclusion of complex digital signal processing when mode-coupling compensating.

Key words:
mode division multiplexing, diffractive optical elements, orbital angular momentum, "multiple-input multiple-output" technology, spatial light modulator.

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