Dispersion estimation method and device based on bit error rate

Abstract

The invention discloses a dispersion estimation method based on a bit error rate, and the method comprises the following steps: sequentially calculating bit error rate values in an optical fiber linkfrom an initial dispersion value according to different dispersion value scanning step lengths, obtaining a corresponding fitting relationship between the dispersion values and the bit error rate values, and finally obtaining an optimal solution of a link dispersion estimation value by utilizing a proposed quick search algorithm. The invention further discloses a dispersion estimation device basedon the bit error rate, the dispersion estimation device comprises an optical fiber signal performance monitoring unit, an adjustable dispersion compensation unit and a calculation unit; the compensation dispersion value of the optical fiber link can be dynamically and rapidly adjusted according to the dispersion estimation method based on the bit error rate, signal sampling is carried out on theoptical fiber link, powerful computing resources of a link dispersion estimation value are provided, and finally an optical fiber link dispersion estimation accurate value is obtained.

Description

technical field [0001] The invention relates to dispersion measurement in optical fiber communication transmission, in particular to a method and device for estimating dispersion based on bit error rate. Background technique [0002] With the further development of big data, Internet of Things, and cloud computing technologies, people's demand for data transmission continues to increase, and the transmission distance and transmission capacity of optical fiber transmission systems continue to increase. In optical fiber communication systems, dispersion is an important parameter to measure the quality of optical fiber transmission links. When there is a certain dispersion in the optical fiber link, the bit error rate of the system will become higher. With the further development of optical fiber communication systems towards high speed and large capacity, dispersion has an increasing impact on the transmission quality of optical fiber links. Therefore, it is possible to accura...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the common problems of low estimation algorithm efficiency, long time-consuming, low estimation accuracy and complex estimation devices in the existing dispersion estimation technology, the present invention provides a dispersion estimation method and device based on bit error rate, according to dispersion and bit error Quickly estimate the dispersion value of the link in optical fiber transmission

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