High-precision multi-channel high-speed data transmission link isometric detection method

Abstract

The invention discloses a high-precision isometric detection method for a multi-channel high-speed data transmission link. The method comprises the following steps: (1), an oscilloscope collects a reference signal and a sampling signal of each to-be-detected transmission channel; (2), the collected reference signals and sampling signals are guided into a data processor; (3), the data processor extracts the reference signal and sampling signal corresponding to each transmission channel and calculates a reference optical path difference; and (4), the data processor calculates a relative opticalpath difference between any two transmission channels and an absolute value of each obtained relative optical path difference is compared with a reference value to evaluate the data transmission consistency of all transmission channels. According to the invention, the isometric and consistent detection of data transmission of all channels in the multi-channel high-speed data transmission links arecarried out accurately; the measurement precision is high and the application range is wide; and the error rate detection is integrated to the detection to avoid secondary installation and modulation, so that the work efficiency is increased and the cost is lowered.

Description

technical field [0001] The invention relates to the field of optical fiber communication, in particular to a high-precision multi-channel high-speed data transmission link isometric detection method. Background technique [0002] At present, in the multi-channel data synchronous transmission detection, the method of coherent optical coupling to measure the optical path is mostly used. In this way, due to the long optical coupling time, the accuracy of the measured optical path is poor, so it is impossible to accurately measure the data of each channel. Consistency, generally used in low-speed data transmission scenarios that do not require high data transmission consistency of each channel. At the same time, in the prior art, the bit error rate and signal consistency of multi-channel optical communication signals are detected separately, which requires secondary installation and adjustment of corresponding equipment and components, which is likely to cause damage and waste o...

AI Technical Summary

Problems solved by technology

[0002] At present, in the multi-channel data synchronous transmission detection, the method of coherent optical coupling to measure the optical path is mostly used. In this way, due to the long optical coupling time, the accuracy of the measured optical path is poor, so it is impossible to accurately measure the data of each channel. Consistency, generally used in low-speed data transmission scenarios that do not require high data transmission consistency of each channel

At the same time, in the existing technology, the bit error rate and signal consistency of multi-channel optical communication signals are detected separately, which requires secondary installation and adjustment of corresponding equipment and components, which is easy to cause damage and waste of vulnerable components such as optical fibers

Images