Optical line terminal, optical transceiving module, system and optical fiber detection method

Abstract

The invention provides an optical fiber detection method. Control is implemented on an OTDR processor by reusing an I2C bus connection between an I2C interface of an RSSI controller and an I2C interface of an RSSI processor on a board of an optical line terminal, so as to implement faulty location for an optical fiber trunk and a distributed optical fiber of an optical fiber network, as well as line analysis and faulty responsibility determination and demarcation for optical fiber branches and optical network units, instead of modifying an original pin of an optical transceiving module on the optical line terminal, so that the board of the optical line terminal supporting OTDR can support an original optical transceiving module supporting an OTDR test and support an original optical transceiving module not-supporting the OTDR test simultaneously, thereby implementing smooth upgrading of the optical transceiving module of the OTDR.

Description

technical field [0001] The present application relates to optical communication technology, and in particular, relates to an optical line terminal, an optical transceiver module, a system, and an optical fiber detection method. Background technique [0002] With the continuous increase of users' demand for bandwidth, the traditional copper broadband access system is increasingly facing bandwidth bottlenecks; at the same time, the optical fiber communication technology with huge bandwidth capacity is becoming more and more mature, and the application cost is decreasing year by year. The optical fiber access network has become the next A strong competitor of the first-generation broadband access network, especially the passive optical network is more competitive. [0003] Generally speaking, a passive optical network system includes an optical line terminal (Optical Line Terminal, OLT) located in the central office, a plurality of optical network units (Optical Network Unit, O...

AI Technical Summary

Problems solved by technology

However, the definition of the pins of the modified optical transceiver module has been inconsistent with the standard, so that the optical transceiver module that supports the OTDR test function must be used in conjunction with the single board that supports the OTDR function. Only the original optical transceiver module can realize the test function of OTDR, which leads to too much change to the existing network architecture, and it is impossible to realize the smooth upgrade of the optical transceiver module of OTDR

Images