Distributed performance monitoring method for long-distance nonlinear optical fiber transmission system

Abstract

The invention discloses a distributed performance monitoring method for a long-distance nonlinear optical fiber transmission system, and the method comprises the following steps: carrying out abstractanalysis on the nonlinear optical fiber transmission system, carrying out the mathematical modeling, and obtaining a reference performance value; utilizing a nonlinear compensation method to obtain an expression representing the performance of the nonlinear optical fiber transmission system for the established mathematical model under a set condition, and calculating an actual performance value;extracting an optical fiber nonlinear parameter and an optical fiber dispersion parameter from the expression of the performance of the optical fiber transmission system to serve as to-be-monitored parameters, optimizing the to-be-monitored parameters, and comparing the actual performance value optimized each time with the reference performance value until the actual performance value and the reference performance value are the same, thereby completing the distributed performance monitoring of the optical fiber transmission system. The accuracy of the model is improved; the mathematical modelis deduced to obtain the system transmission performance expression, and the extracted parameters are optimized by using a genetic algorithm, so that the optimization precision is improved, and the transmission performance of the system is improved.

Description

technical field [0001] The invention relates to the field of optical fiber communication, in particular to a distributed performance monitoring method for a long-distance nonlinear optical fiber transmission system. Background technique [0002] Performance monitoring based on optical transmission systems has always been a research hotspot in optical fiber sensing. Due to the technology used in the optical fiber transmission network, wavelength conversion, uplink and downlink and routing path selection are mainly considered. Due to long-distance transmission, the damage of the transmission link is mainly considered, that is, the damage of the optical fiber and the amplifier. Due to the limited improvement of the system performance by the compensation algorithm, the theoretical upper limit of the compensation algorithm cannot be reached, and the distributed performance monitoring method of the nonlinear optical fiber transmission system is mainly considered to obtain accurat...

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a distributed performance monitoring method for long-distance nonlinear optical fiber transmission systems to overcome the above-mentioned defects that the existing compensation algorithm has limited improvement of the system performance of the optical fiber transmission system and the improvement of the system transmission performance is not ideal.

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