公开(公告)号：US20170346550A1

公开(公告)日：2017-11-30

申请号：US15534117

申请日：2015-01-21

申请人： Telefonaktiebolaget LM Ericsson (publ)

发明人： Jean Pierre von der Weid ,  Gustavo Castro do Amaral ,  Renata Goldman Leibel ,  Diego Rodrigo Villafani Caballero

IPC分类号： H04B10/071 ,  H04B10/077 ,  H04B10/079

CPC分类号： H04B10/071 ,  H04B10/0771 ,  H04B10/0777 ,  H04B10/0791 ,  H04B10/0797

摘要： The invention relates to a device and a method performed by the device of monitoring an optical fibre link. The method provided for monitoring an optical fibre link comprises generating a monitoring signal used for monitoring the optical fibre link, combining the generated monitoring signal with a data signal to be transmitted over the optical fibre link, detecting backscattering of the monitoring signal from the optical fibre link, comparing the detected backscattered monitoring signal with an estimated monitoring signal backscattered along the optical fibre link, and determining, based on the comparison, at least one location along the optical fibre link where the monitoring signal is backscattered, and signal loss caused by the backscattering.

公开(公告)号：US10218434B2

公开(公告)日：2019-02-26

申请号：US15534117

申请日：2015-01-21

申请人： Telefonaktiebolaget LM Ericsson (publ)

发明人： Jean Pierre von der Weid ,  Gustavo Castro do Amaral ,  Renata Goldman Leibel ,  Diego Rodrigo Villafani Caballero

IPC分类号： H04B10/08 ,  H04B10/071 ,  H04B10/077 ,  H04B10/079

摘要： The invention relates to a device and a method performed by the device of monitoring an optical fibre link. The method provided for monitoring an optical fibre link comprises generating a monitoring signal used for monitoring the optical fibre link, combining the generated monitoring signal with a data signal to be transmitted over the optical fibre link, detecting backscattering of the monitoring signal from the optical fibre link, comparing the detected backscattered monitoring signal with an estimated monitoring signal backscattered along the optical fibre link, and determining, based on the comparison, at least one location along the optical fibre link where the monitoring signal is backscattered, and signal loss caused by the backscattering.