公开(公告)号：US20170149496A1

公开(公告)日：2017-05-25

申请号：US15427486

申请日：2017-02-08

Applicant: EXFO INC.

Inventor： Stéphane Perron ,  Michel Leblanc

IPC: H04B10/071 ,  G01M11/00

CPC classification number: H04B10/071 ,  G01M11/3127 ,  G01M11/3136 ,  G01M11/3145

Abstract: An OTDR device and method for characterizing one or more events in an optical fiber link are provided. A plurality of light acquisitions is performed. For each light acquisition, test light pulses are propagated in the optical fiber link and the corresponding return light signals from the optical fiber link are detected. The light acquisitions are performed under different acquisition conditions, for example using different pulsewidths or wavelengths. Parameters characterizing the event are derived using the detected return signal from at least two of the plurality of light acquisitions.

公开(公告)号：US20160013860A1

公开(公告)日：2016-01-14

申请号：US14860277

申请日：2015-09-21

Applicant: EXFO INC.

Inventor： Stéphane Perron ,  Michel Leblanc

IPC: H04B10/071 ,  G01M11/00

CPC classification number: H04B10/071 ,  G01M11/3127 ,  G01M11/3136 ,  G01M11/3145

Abstract: An OTDR device and method for characterizing one or more events in an optical fiber link are provided. A plurality of light acquisitions is performed. For each light acquisition, test light pulses are propagated in the optical fiber link and the corresponding return light signals from the optical fiber link are detected. The light acquisitions are performed under different acquisition conditions, for example using different pulsewidths or wavelengths. Parameters characterizing the event are derived using the detected return signal from at least two of the plurality of light acquisitions.

公开(公告)号：US09170173B2

公开(公告)日：2015-10-27

申请号：US14044768

申请日：2013-10-02

Applicant: EXFO INC.

Inventor： Stéphane Perron ,  Michel Leblanc

IPC: G01N21/00 ,  G01M11/00 ,  H04B10/071

CPC classification number: H04B10/071 ,  G01M11/3127 ,  G01M11/3136 ,  G01M11/3145

Abstract: An OTDR device and method for characterizing one or more events in an optical fiber link are provided. A plurality of light acquisitions is performed. For each light acquisition, test light pulses are propagated in the optical fiber link and the corresponding return light signals from the optical fiber link are detected. The light acquisitions are performed under different acquisition conditions, for example using different pulsewidths or wavelengths. Parameters characterizing the event are derived using the detected return signal from at least two of the plurality of light acquisitions.

Abstract translation: 提供了用于表征光纤链路中的一个或多个事件的OTDR设备和方法。 进行多次光采集。 对于每个光采集，测试光脉冲在光纤链路中传播，并且检测来自光纤链路的相应返回光信号。 光采集在不同的采集条件下进行，例如使用不同的脉冲宽度或波长。 使用来自多个光采集中的至少两个的检测到的返回信号导出表征事件的参数。

公开(公告)号：US20140037285A1

公开(公告)日：2014-02-06

申请号：US14044768

申请日：2013-10-02

Applicant: EXFO INC.

Inventor： Stéphane Perron ,  Michel Leblanc

IPC: H04B10/071

CPC classification number: H04B10/071 ,  G01M11/3127 ,  G01M11/3136 ,  G01M11/3145

Abstract: An OTDR device and method for characterizing one or more events in an optical fiber link are provided. A plurality of light acquisitions is performed. For each light acquisition, test light pulses are propagated in the optical fiber link and the corresponding return light signals from the optical fiber link are detected. The light acquisitions are performed under different acquisition conditions, for example using different pulsewidths or wavelengths. Parameters characterizing the event are derived using the detected return signal from at least two of the plurality of light acquisitions.

Abstract translation: 提供了用于表征光纤链路中的一个或多个事件的OTDR设备和方法。 进行多次光采集。 对于每个光采集，测试光脉冲在光纤链路中传播，并且检测来自光纤链路的相应返回光信号。 光采集在不同的采集条件下进行，例如使用不同的脉冲宽度或波长。 使用来自多个光采集中的至少两个的检测到的返回信号导出表征事件的参数。

公开(公告)号：US09709460B2

公开(公告)日：2017-07-18

申请号：US14575409

申请日：2014-12-18

Applicant: EXFO INC.

Inventor： Michel Leblanc ,  Stéphane Perron

IPC: G01M11/00

CPC classification number: G01M11/31 ,  G01M11/3145 ,  G01M11/3172

Abstract: The reflectometric method for measuring an optical loss value of an optical fiber link generally comprises: obtaining at least one bias value being indicative of a bias induced by differing backscattering characteristics of a first optical fiber length and a second optical fiber length; propagating at least one test signal serially into the first optical fiber length, the optical fiber link and the second optical fiber length; monitoring at least one return signal resulting respectively from the propagation of the at least one test signal; and determining the optical loss value based on the at least one return signal and the at least one bias value.

公开(公告)号：US20150198503A1

公开(公告)日：2015-07-16

申请号：US14575409

申请日：2014-12-18

Applicant: EXFO INC.

Inventor： Michel Leblanc ,  Stéphane Perron

IPC: G01M11/00

CPC classification number: G01M11/31 ,  G01M11/3145 ,  G01M11/3172

Abstract: The reflectometric method for measuring an optical loss value of an optical fiber link generally comprises: obtaining at least one bias value being indicative of a bias induced by differing backscattering characteristics of a first optical fiber length and a second optical fiber length; propagating at least one test signal serially into the first optical fiber length, the optical fiber link and the second optical fiber length; monitoring at least one return signal resulting respectively from the propagation of the at least one test signal; and determining the optical loss value based on the at least one return signal and the at least one bias value.

Abstract translation: 用于测量光纤链路的光损耗值的反射测量方法通常包括：获得指示由第一光纤长度和第二光纤长度的不同后向散射特性引起的偏置的至少一个偏置值; 将至少一个测试信号串行地传播到第一光纤长度，光纤链路和第二光纤长度; 监测分别由所述至少一个测试信号的传播产生的至少一个返回信号; 以及基于所述至少一个返回信号和所述至少一个偏置值来确定所述光学损耗值。

公开(公告)号：US10014935B2

公开(公告)日：2018-07-03

申请号：US15427486

申请日：2017-02-08

Applicant: EXFO INC.

Inventor： Stéphane Perron ,  Michel Leblanc

IPC: G01N21/00 ,  H04B10/071 ,  G01M11/00

CPC classification number: H04B10/071 ,  G01M11/3127 ,  G01M11/3136 ,  G01M11/3145

Abstract: An OTDR device and method for characterizing one or more events in an optical fiber link are provided. A plurality of light acquisitions is performed. For each light acquisition, test light pulses are propagated in the optical fiber link and the corresponding return light signals from the optical fiber link are detected. The light acquisitions are performed under different acquisition conditions, for example using different pulsewidths or wavelengths. Parameters characterizing the event are derived using the detected return signal from at least two of the plurality of light acquisitions.

公开(公告)号：US09571186B2

公开(公告)日：2017-02-14

申请号：US14860277

申请日：2015-09-21

Applicant: EXFO INC.

Inventor： Stéphane Perron ,  Michel Leblanc

IPC: G01M11/00 ,  H04B10/071

CPC classification number: H04B10/071 ,  G01M11/3127 ,  G01M11/3136 ,  G01M11/3145

Abstract: An OTDR device and method for characterizing one or more events in an optical fiber link are provided. A plurality of light acquisitions is performed. For each light acquisition, test light pulses are propagated in the optical fiber link and the corresponding return light signals from the optical fiber link are detected. The light acquisitions are performed under different acquisition conditions, for example using different pulsewidths or wavelengths. Parameters characterizing the event are derived using the detected return signal from at least two of the plurality of light acquisitions.

Abstract translation: 提供了用于表征光纤链路中的一个或多个事件的OTDR设备和方法。 进行多次光采集。 对于每个光采集，测试光脉冲在光纤链路中传播，并且检测来自光纤链路的相应返回光信号。 光采集在不同的采集条件下进行，例如使用不同的脉冲宽度或波长。 使用来自多个光采集中的至少两个的检测到的返回信号导出表征事件的参数。