Space division multiplexing optical fiber characteristic parameter monitoring method and device, equipment and storage medium

Abstract

The embodiment of the invention discloses a space division multiplexing optical fiber characteristic parameter monitoring method and device, equipment and a storage medium. According to the embodiment of the invention, the method comprises the steps of obtaining a time domain coefficient of each sub-filter of a MIMO equalizer, obtaining the frequency response of each sub-filter according to the time domain coefficient of each sub-filter, and obtaining a frequency response matrix of the MIMO equalizer, and obtaining space division multiplexing optical fiber characteristic parameters of each space channel according to the frequency response matrix. According to the embodiment of the invention, the time domain coefficients of the sub-filters are obtained from the MIMO equalizer to calculate the characteristic parameters in the space division multiplexing optical fiber, the environment change can be tracked, the characteristic parameters of the space division multiplexing optical fiber can be monitored in real time, the real-time measurement of a dynamic link is realized, the overall characteristics of a multi-span optical fiber link are described, and according to the embodiment of the invention, the coefficient is obtained from the MIMO equalizer, the data source is accurate, the interference of other modes can be eliminated, and the accuracy of the obtained characteristic parameter is higher.

Description

technical field [0001] The embodiments of the present application relate to the field of optical fiber communication, and in particular to a method, device, device and storage medium for monitoring characteristic parameters of a space division multiplexed optical fiber. Background technique [0002] With the increase of communication capacity, the depletion of polarization, orthogonal dimension, frequency resources and electronic bottleneck resources, the space division multiplexing technology based on few-mode fiber, multi-core fiber and few-mode multi-core fiber and other special fibers has been increasingly obtained. extensive attention. Differential group delay parameters between different modes of multi-core or few-mode fibers, mode-dependent loss parameters and mode-dependent chromatic dispersion parameters are unique and important parameters in space division multiplexing systems. At present, spectral interferometry and backscattering method are mainly used to monito...

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Problems solved by technology

[0003] However, the inventors found that environmental changes, such as changes in factors such as temperature stress, will lead to dynamic changes in characteristic parameters, while the characteristic parameter measurement methods in the prior art can only realize the prediction of characteristic parameters, and cannot track environmental changes and bring business real-time Monitoring characteristic parameters. In addition, the characteristic parameter measurement method of the prior art cannot realize the measurement of the characteristic parameters of the dynamic link, and cannot describe the overall characteristics of the multi-span optical fiber link. When measuring the parameters, the interference of other modes cannot be ruled out, and the data The source is imprecise, making the measured parameters imprecise

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