公开(公告)号：US09194763B2

公开(公告)日：2015-11-24

申请号：US14064838

申请日：2013-10-28

Applicant: Huawei Marine Networks Co., Ltd.

Inventor： Yingxin Hu ,  Guangjun Wang ,  Daizhen Chao

IPC: G01M11/00 ,  H04B10/071

CPC classification number: G01M11/3118 ,  G01M11/3127 ,  H04B10/071 ,  H04B2210/074

Abstract: The present invention provides an optical time-domain reflectometry signal detection method, including the following steps: modulating, under the control of a correlation code pattern sequence respectively, n detection optical signals transmitted by detection light sources of different wavelengths into n pulse optical signals, where n is a natural number greater than or equal to 2; combining the n pulse optical signals and outputting a detection optical signal to an optical fiber under test; receiving a backscattered optical signal from the optical fiber under test and dividing the backscattered optical signal into n optical signals according to wavelengths; and performing correlation processing on the n optical signals according to the correlation code pattern sequence and outputting a correlation optical time-domain reflectometry signal. The present invention further provides an optical time-domain reflectometry signal detection apparatus.

Abstract translation: 本发明提供了一种光时域反射信号检测方法，包括以下步骤：分别在相关码图案序列的控制下，将由不同波长的检测光源发送的n个检测光信号调制成n个脉冲光信号， 其中n是大于或等于2的自然数; 组合n个脉冲光信号，并将检测光信号输出到被测光纤; 从被测光纤接收反向散射光信号，并根据波长将后向散射光信号分为n个光信号; 并根据相关码图案序列对n个光信号执行相关处理，并输出相关光时域反射测量信号。 本发明还提供了一种光时域反射信号检测装置。

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.