Online monitoring method for optical fiber transmission delay in optical communication network

Abstract

The invention relates to an online monitoring method for optical fiber transmission delay in an optical communication network, and belongs to the technical field of optical fiber communication. According to the online monitoring method for the optical fiber transmission delay in the optical communication network, on the basis of existing optical fiber transmission equipment, a set of dual-fiber-to-single-fiber transmission multiplexing equipment is added between a master station and a slave station, simultaneously time delay online monitoring algorithms are added in a time server of the master station and a time server of the slave station, and the online monitoring of the optical fiber transmission delay can be simply achieved. Firstly, detection is carried out on the time delay value of the master station equipment and the time delay value of the slave station equipment, roundtripping loop measurement is then carried out between the master station and the slave station, then, multiplicating measurement and statistical averaging are carried out on the time delay values of an optical fiber transmission link, and lastly, the time delay value of the optical fiber transmission is calculated. The online monitoring method for the optical fiber transmission delay in the optical communication network can enable the measurement precision of the optical fiber time delay value between the master station and the slave station to be smaller than or equal to 1ns, can control the time delay change of the optical fiber transmission to be within the range of 1ns per day to 10ns per day by integrating an optical fiber delay automatic locking and isostatic compensation technology in application, and can be widely applied to high precision optical fiber time transmission and optical fiber delay compensation.

Description

technical field [0001] The invention belongs to the technical field of optical fiber communication, and relates to an on-line monitoring method for optical fiber transmission delay in an optical communication network. Background technique [0002] The time delay of optical fiber transmission in an optical communication network is not only related to the length of the optical cable, but also to the fluctuation of the optical fiber length caused by factors such as the aging of the optical fiber itself and changes in the ambient temperature. The fiber length fluctuation is an extremely slow change, resulting in a slow change in the fiber transmission delay, which will cause drift errors and cumulative drift errors in the optical transmission network carrying the time synchronization support network (ultra-high-precision time-frequency reference). Causes slippage and error in data transmission. [0003] For the measurement and correction of optical fiber transmission delay in o...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the off-line one-time measurement and one-time compensation technology is used for the optical fiber transmission delay measurement in the current engineering implementation and maintenance of the optical communication network. A more accurate and convenient online monitoring method for optical fiber transmission delay in optical communication networks is provided to solve the problems of heavy workload and time-consuming

Images