Optical fiber transmission detection system and optical fiber transmission detection method

Abstract

The invention relates to the technical field of optical fiber communication, and discloses an optical fiber transmission detection system and an optical fiber transmission detection method. The system includes a distributed optical fiber acoustic wave sensing device and a main controller. A polarization scrambler unit and a photoelectric switch group are arranged on the distributed optical fiber acoustic wave sensing device. The first output interface in the electrical switch group is connected in series with the polarization scrambler unit. connection, the main controller controls the first output interface or the second output interface in the photoelectric switch group to be connected to control whether the polarization scrambler unit is effectively connected to the system, and the optical fiber transmission detection system is controlled to work in OTDR mode or DAS mode, so as to realize the detection of the transmission performance of the optical fiber to be tested. Due to the addition of the polarization scrambler unit and the optical switch group, two optical signals can be generated through a single light source to realize the integration of the two modes. Compared with the prior art, the system is simple in structure, reliable in formation, and simultaneously controls logic and control The technique is also simpler.

Description

technical field [0001] The invention relates to the technical field of optical fiber communication, in particular to an optical fiber transmission detection system and an optical fiber transmission detection method. Background technique [0002] Distributed Fiber Acoustic Sensing System (hereinafter referred to as DAS) is a fiber optic transmission detection system developed based on distributed fiber optic sensing technology. It is based on the Rayleigh scattering effect of optical signals during optical fiber transmission and the principle of optical time domain reflectometry (OTDR), and integrates multiple disciplines such as optics, electronics, mechanics, and digital signal processing. A comprehensive new distributed optical fiber Sensing Technology Systems. [0003] At present, when two detections of DAS and OTDR are realized in one system at the same time, the realization method is to directly integrate the DAS system and the OTDR system through two switches, such as...

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to solve the problem that the structure of the existing DAS and OTDR system is complicated, and the compatible control of the two modes cannot be realized

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