This article is cited in 6 papers

Special Issue 'Optical Fibres and Their Applications'

Comparative analysis of algorithms for compensation of nonlinear distortions in fibre-optic links

V. A. Burdin, A. V. Bourdine, I. V. Grigorov

Povolzhskiy State University of Telecommunications and Informatics, Samara

Abstract: We report the results of numerical modelling and comparative analysis of two algorithms for digital signal processing intended for signal demodulation in fibre-optic links (FOLs) operating in a nonlinear mode. The first algorithm is based on the use of nonlinear Schrödinger filters and the second one utilises the 'reception in general with bit-by-bit decision making' technique. It is found that the latter algorithm is more noiseproof, compared to the first one (with a SNR gain of about 0.5 dB), in single-channel fibre-optic links, and its operation does not require knowledge of the link parameters; therefore, the second algorithm can also be constructed for wavelength-division multiplexing systems.

Keywords: fibre-optic link, nonlinear distortions, mathematical modelling, nonlinear Schrödinger filter, algorithm for reception in general with bit-by-bit decision making.

Received: 16.10.2017

 English version: Quantum Electronics, 2017, 47:12, 1144–1146

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