Patent ID: 9130672
Filing Date: 2015-09-08
Classification: H04B

Abstract:
1. A repeater for an optical communication system, the repeater being capable of operatively coupling to an incoming fiber path and an outgoing fiber path relative to a given direction of communication, the repeater comprising: a first amplifier having an input and an output, and for amplifying optical signals; a second amplifier having an input and an output, and for amplifying optical signals; and a first high loss loop back (HLLB) path for coupling the output of the first amplifier to the input of the second amplifier, the first HLLB path being configured to couple an outgoing optical time domain reflectometry (OTDR) test signal from a first line monitoring equipment (LME) and reflected from the outgoing fiber path from the output of the first amplifier to the input of the second amplifier and to the incoming fiber path in an incoming direction, couple an incoming OTDR test signal from the first LME from the output of the first amplifier to the input of the second amplifier and to the incoming fiber path in an outgoing direction, and couple a loopback test signal from the first LME from the output of the first amplifier to the input of the second amplifier and to the incoming fiber path in an incoming direction.