METHOD AND OPTICAL LINE TERMINAL FOR OPTICAL FIBER FAULT DIAGNOSIS IN PASSIVE OPTICAL NETWORK

摘要

A method for performing optical fiber fault diagnosis in a passive optical network is disclosed in the present invention. The method includes: after receiving an optical fiber fault diagnosis message, a receiving module of an optical line terminal triggering a test module (S10); after triggered by the receiving module, the test module performing an optical time domain reflection test, and obtaining data information (S20) of the test; and a fault diagnosis module analyzing the data information, and performing optical fiber fault diagnosis (S30). An optical line terminal is also disclosed in the present invention, including a control module and an optical module, and the control module includes a receiving module and a fault diagnosis module, and the optical module includes a test module. In the present invention, the process of optical fiber fault diagnosis is performed in combination with PON network management system, which satisfies the requirements of timeliness and maintainability and makes a PON network device possess the ability of optical fiber fault diagnosis in itself, simplifies the networking structure of system, decreases operating costs of network and enhances the reliability of system.