公开(公告)号：US11271641B1

公开(公告)日：2022-03-08

申请号：US16740953

申请日：2020-01-13

Applicant: EXFO Inc.

Inventor： Stephane Perron

IPC: H04B10/071 ,  G01M11/00

Abstract: There is therefore provided an OTDR method for characterizing an optical fiber link, wherein a receive device comprising a reflective optical signature and a receive fiber is connected at a remote end of the optical fiber link under test. The reflective optical signature is detected using an OTDR acquisition and link continuity is verified. Because detection of the reflective optical signature rely on high-intensity reflective peaks of the reflective optical signature and not on RBS level, dynamic range constraints are relaxed and so is the averaging time. Advantageously, the method may be employed to detect the reflective optical signature, verify link continuity, measure total link length, measure total insertion loss and/or determine a polarity of a multi-fiber array cable link.

公开(公告)号：USD923028S1

公开(公告)日：2021-06-22

申请号：US29664955

申请日：2018-09-28

Applicant: EXFO INC.

Designer： Stephane Perron ,  Antoine-Alexandre Michaud

公开(公告)号：US10862582B1

公开(公告)日：2020-12-08

申请号：US16510396

申请日：2019-07-12

Applicant: EXFO Inc.

Inventor： Mario L'Heureux ,  Stephane Perron

IPC: H04B10/035 ,  H05B45/20 ,  H04B10/071 ,  G01M11/00 ,  G01D5/353 ,  H05B45/22

Abstract: There is provided an OTDR receive device, an OTDR system comprising an OTDR receive device and an OTDR method wherein the OTDR unit and the OTDR receive device are to be connected at opposite ends of an optical fiber link under test. The OTDR receive device comprises means for the OTDR system to detect an established connectivity between the OTDR unit and the OTDR receive device via the optical fiber link under test and a status indicator to notify a user of the receive device of the connectivity status and optionally an OTDR measurement status. Connectivity detection allows to check for continuity between the OTDR unit and the OTDR receive device before launching an OTDR measurement. A user of the OTDR unit does not need to communicate with the user of the OTDR receive device to know when to start the acquisition.

公开(公告)号：US20160041065A1

公开(公告)日：2016-02-11

申请号：US14820864

申请日：2015-08-07

Applicant: EXFO INC.

Inventor： Mario L'Heureux ,  Stephane Perron ,  Michel Leclerc

IPC: G01M11/00 ,  H04B10/071

CPC classification number: G01M11/3136 ,  G01M11/3154

Abstract: There is provided a method and a system for identifying or verifying the fiber arrangement and/or the cable type of multi-fiber array cables (such as MPO cables) which employs an OTDR acquisition device at the near end of the MPO cable, a loopback device at the far end and an array of signatures detectable by the OTDR, either at the far or the near end. The loopback device allows performing bidirectional OTDR measurements with a single OTDR acquisition device (without moving it from one end to the other) and the signature array provides fiber arrangement/cable type identification or verification.

Abstract translation: 提供了一种用于识别或验证在MPO电缆的近端使用OTDR采集设备的多纤维阵列电缆（例如MPO电缆）的光纤布置和/或电缆类型的方法和系统，环回 远端或远端的OTDR检测到的签名阵列。 环回设备允许使用单个OTDR采集设备执行双向OTDR测量（不将其从一端移动到另一端），并且签名阵列提供光纤布置/电缆类型识别或验证。

公开(公告)号：US20140146312A1

公开(公告)日：2014-05-29

申请号：US14092227

申请日：2013-11-27

Applicant: EXFO Inc.

Inventor： Stephane Perron ,  Michel Leclerc

IPC: G01M11/00

CPC classification number: G01M11/3145 ,  G01M11/3118

Abstract: There is provided an optical reflectometric method and system for characterizing an optical fiber link, wherein events in the fiber optic link under test are identified and values of parameters characterizing the events (e.g. location, insertion loss and reflectance) are extracted from an analysis of one or more reflectometric measurements performed on the optical fiber link. A loss profile and/or a reflectance profile are then constructed. The loss and reflectance profiles are typically displayed on screen or otherwise graphically represented for an operator to be able to appreciate the measurement results at a single glance.

Abstract translation: 提供了用于表征光纤链路的光学反射测量方法和系统，其中识别被测光纤链路中的事件，并且从一个分析中提取表征事件（例如位置，插入损耗和反射率）的参数值 或更多的反射测量在光纤链路上执行。 然后构造损耗曲线和/或反射率分布。 损耗和反射率分布通常显示在屏幕上，或以其它方式表示为操作者，以便能够一目了然地了解测量结果。