System for time domain reflectometry testing an optical network (OTDR)

摘要

the present invention relates to a system for the control of time domain reflectometry (otdr) of a plurality of optical fiber lines 13 of a telecommunication network, especially suitable for tree networks of pon (passive optical network).the system includes a plurality of fiber optic lines 13, a coupler 7 having a plurality of input and output, each of the outputs is connected to a line of the plurality of lines 13.the system (10) being characterized in that it comprises means for separating each of the 13, 14 in two ways: the first path 18 to receive a first control pulse corresponding to a first and a second path for receiving a second impulsi. the control corresponding to the second control.the length of the second path is greater than the length of the first path to a predetermined surlongueurs extra length 15, each of 15 different for each of the 13.