公开(公告)号：US11265080B2

公开(公告)日：2022-03-01

申请号：US17051664

申请日：2019-04-29

Applicant: HUAWEI MARINE NETWORKS CO., LTD.

Inventor： Changwu Xu ,  Keqiang Cui ,  Guangjun Wang ,  Yingli Tao ,  Li Yang ,  Jianping Li

IPC: H04B10/077 ,  H04L12/26 ,  H04L43/10

Abstract: 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.

公开(公告)号：US11955764B2

公开(公告)日：2024-04-09

申请号：US16980478

申请日：2018-08-27

Applicant: HUAWEI MARINE NETWORKS CO., LTD.

Inventor： Changwu Xu ,  Yuhe Li ,  Ge Jin ,  Yan Wang ,  Liping Ma

IPC: H01S3/30 ,  H01S3/067 ,  H01S3/094 ,  H04B10/291 ,  H04B10/293

CPC classification number: H01S3/06754 ,  H01S3/06716 ,  H01S3/06737 ,  H01S3/094053 ,  H01S3/094061 ,  H01S3/09408 ,  H04B10/2912 ,  H04B10/293

Abstract: Disclosed is a submarine network device, comprising a fiber set, a pump laser set, an erbium doped fiber amplifier (EDFA) set, a primary fiber coupler (CPL) set and a secondary CPL set, wherein the primary CPL set comprises N primary CPLs, the secondary CPL set comprises N secondary CPLs, with N being an integer greater than or equal to 3. The fiber set is configured to connect the pump laser set, the primary CPL set, the secondary CPL set and the EDFA set. An input port of each primary CPL in the primary CPL set is at least connected with a pump laser. An output port of each secondary CPL in the secondary CPL set is at least connected with an EDFA. Output ports of each primary CPL in the primary CPL set are respectively connected with two different secondary CPLs that are spaced by a secondary CPL, and input ports of each secondary CPL in the secondary CPL set are respectively connected with two different primary CPLs that are spaced by a primary CPL.

公开(公告)号：US09762348B2

公开(公告)日：2017-09-12

申请号：US15153517

申请日：2016-05-12

Applicant: Huawei Marine Networks Co., Ltd.

Inventor： Wendou Zhang ,  Changwu Xu ,  Liping Ma

IPC: H04J14/02 ,  G02B6/293

CPC classification number: H04J14/0212 ,  G02B6/29382 ,  H04J14/0205 ,  H04J14/021 ,  H04J14/0215 ,  H04J14/0221 ,  H04J14/0291

Abstract: Embodiments of the present invention provide a reconfigurable optical add-drop multiplexer apparatus, and relate to the field of communications, so as to solve the problem of inconvenient line failure detection. The ROADM apparatus includes: a first ROADM, a second ROADM, one splitting coupler, four optical amplifiers, and four couplers. The embodiments of the present invention are used in a communications line architecture.

公开(公告)号：US09705593B2

公开(公告)日：2017-07-11

申请号：US14799418

申请日：2015-07-14

Applicant: Huawei Marine Networks Co., Ltd.

Inventor： Wendou Zhang ,  Changwu Xu

IPC: H04B10/077 ,  H04B10/035 ,  H04B10/291 ,  H04B10/80

CPC classification number: H04B10/0777 ,  H04B10/035 ,  H04B10/0779 ,  H04B10/2916 ,  H04B10/2918 ,  H04B10/80 ,  H04B2210/078

Abstract: A communications device is disclosed and includes: a first acquiring unit for acquiring first specific wavelength light and second specific wavelength light from a first optical path; a first receiving unit for converting the first specific wavelength light coming from the first acquiring unit into a first electrical signal; a first control unit for sending a first modulating signal to a first loopback unit according to the first electrical signal coming from the first receiving unit; and the first loopback unit for modulating the second specific wavelength light coming from the first acquiring unit according to the first modulating signal, and looping the modulated second specific wavelength light back to a second optical path, where a transmission direction of an optical signal in the second optical path is opposite to a transmission direction of an optical signal in the first optical path. The present invention further discloses a communications method.