Optical fiber failure positioning system and method

Abstract

The invention relates to an optical fiber failure positioning system and method. The optical fiber failure positioning method comprises the following steps of: sending out testing light at preset pulse width and pulse time interval to be transmitted in an optical fiber to be detected; detecting the power loss of the testing light; initially determining the failure position of the optical fiber according to the power loss of the testing light; determining a dynamic range of the testing light according to the power loss of the testing light; estimating a dynamic range of secondary testing light required when the optical fiber to be detected is monitored for the second time according to the initially determined failure position of the optical fiber; re-determining the pulse width and the pulse time interval according to the relationship among the dynamic range of the testing light, the pulse width and the pulse time interval; sending out secondary testing light at the re-determined pulse width and the pulse time interval to be transmitted in the optical fiber to be detected; detecting the power loss of the secondary testing light; and positioning the secondary failure for the optical fiber to be detected according to the power loss of the secondary testing light. By adopting the system and the method, the accuracy of optical fiber failure positioning can be improved.

Description

technical field [0001] The present application relates to a fault location system, in particular to a fiber optic fault location system and method. Background technique [0002] In recent years, optical fiber communication technology has been vigorously developed. Optical fiber communication not only realizes long-distance transmission of signals, but also has stable performance of transmitted signals. In the optical fiber monitoring technology, a light source is placed at the far end of the client to emit test light. After the test light propagates in the optical fiber of the client under test, it is received by an OTDR (Optical Time Domain Reflectometer, Optical Time Domain Reflectometer). Medium propagation will be attenuated due to scattering. OTDR can analyze whether the optical fiber under test is abnormal by analyzing the power attenuation of the test light. A solution is proposed for fault location, but the positioning accuracy is not enough, and maintenance personn...

AI Technical Summary

Problems solved by technology

In the optical fiber monitoring technology, a light source is placed at the far end of the client to emit test light. After the test light propagates in the optical fiber of the client under test, it is received by an OTDR (Optical Time Domain Reflectometer, Optical Time Domain Reflectometer). Medium propagation will be attenuated due to scattering. OTDR can analyze whether the fiber under test is abnormal by analyzing the power attenuation of the test light, and determine the abnormal position of the fiber according to the parameters such as the range and pulse width of the test light. A solution is proposed for fault location, but the positioning accuracy is not enough, and maintenance personnel need to spend a lot of time to further troubleshoot the fault point after positioning

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