公开(公告)号：US20210021336A1

公开(公告)日：2021-01-21

申请号：US16982951

申请日：2019-03-06

申请人： HUAWEI MARINE NETWORKS CO., LTD.

发明人： Yan WANG ,  Changwu XU ,  Liping MA ,  Li YANG

IPC分类号： H04B10/071 ,  H04B10/29 ,  H04B10/2537 ,  H01S3/094

摘要： This application provides a submarine network device and a submarine cable system that may accurately detect a fault of a submarine optical repeater in time. The device comprises: a first fiber and a second fiber; at least one first pump laser, configured to supply pumping light to a first optical amplification unit located in the first fiber; the first optical amplification unit, configured to amplify and then output a first probe signal sent from a first site to a second site; a first fiber coupler located in the first fiber, configured to receive a first reflected optical signal obtained from the first probe signal after Rayleigh backscattering, and send a portion of the first reflected optical signal to a second fiber coupler located in the second fiber; at least one second pump laser, configured to supply pumping light to a second optical amplification unit; a second optical amplification unit, configured to amplify and then output a second data optical signal sent by the second site to the first site; and a second fiber coupler, configured to receive a portion of the first reflected optical signal output by the first fiber coupler.

公开(公告)号：US20210218469A1

公开(公告)日：2021-07-15

申请号：US17051664

申请日：2019-04-29

申请人： HUAWEI MARINE NETWORKS CO., LTD.

发明人： Changwu XU ,  Keqiang CUI ,  Guangjun WANG ,  Yingli TAO ,  Li YANG ,  Jianping LI

IPC分类号： H04B10/077 ,  H04L12/26

摘要： This application discloses a submarine cable fault determining method and apparatus for realizing detecting whether a fault occurs to a submarine cable, without depending on TTE. The submarine cable fault determining method includes: receiving, by a network management system, first detection information from a first device during a first preset time, and receiving second detection information from a second device during a second preset time, where the second detection information is used to indicate whether the second device receives a first heartbeat signal from the first device through a submarine cable, and the first detection information is used to indicate whether the first device receives a second heartbeat signal from the second device through the submarine cable; and determining, by the network management system based on the first detection information and the second detection information, whether a fault occurs to the submarine cable between the first device and the second device.