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公开(公告)号：US10270554B2
公开(公告)日：2019-04-23
申请号：US15822339
申请日：2017-11-27
Applicant: EXFO INC.
Inventor： Bernard Ruchet , Mario L'Heureux , Daniel Gariepy , Etienne Morin-Drouin
IPC: H04B17/00 , H04J14/02 , H04B10/079
Abstract: A device and method for optical power measurement in an optical network supporting upstream and downstream signal propagation along an optical transmission path. The device includes an upstream wavelength analyzer receiving upstream light extracted from the optical transmission path and configured to determine an upstream spectral characteristic of the extracted upstream light. The device also includes a downstream filter assembly receiving downstream light extracted from the optical transmission path and configured to spectrally split the extracted downstream light into a plurality of downstream signals, one of which corresponding to a downstream signal of interest. The device further includes a processing unit configured to identify, based on the upstream spectral characteristic, the downstream signal of interest among the downstream filtered signals, and a downstream optical power meter assembly coupled to the downstream filter assembly and configured to measure an optical power parameter of the downstream signal of interest.
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2.发明授权公开(公告)号：US11624680B2
公开(公告)日：2023-04-11
申请号：US17446368
申请日：2021-08-30
Applicant: EXFO Inc.
Inventor： Mario L'Heureux , Guillaume Lavallee , Robert Baribault
Abstract: There are provided an optical-fiber connector endface inspection microscope system and a method for inspecting an endface of an optical-fiber connector. The inspection microscope device is releasably connectable to an adapter tip configured to interface with the optical-fiber connector to inspect the endface thereof. The adapter tip is one among a plurality of adapter tip types adapted to inspect respective types of optical-fiber connectors. The optical-fiber connector endface inspection microscope system comprises a tip detection system adapted to recognize the type of the adapter tip among the plurality of adapter tip types; and is configured to analyze inspection images to produce an inspection result for the endface, at least partly based on a fiber type corresponding to the recognized adapter tip and/or other information read by the tip detection system.
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公开(公告)号：US20150346054A1
公开(公告)日：2015-12-03
申请号：US14820707
申请日：2015-08-07
Applicant: EXFO INC.
Inventor： Mario L'Heureux , Michel Leclerc , Eric Thomassin , Stephane Perron
IPC: G01M11/00
CPC classification number: G01M11/3145 , G01M11/3109 , G01M11/3118 , G01M11/39
Abstract: There is provided a bi-directional optical reflectometric method for characterizing an optical fiber link. The method comprises: performing at least one forward-direction light acquisition from one end of the optical fiber link and performing at least one backward-direction light acquisition from the opposite end, wherein each light acquisition is performed by propagating at least one test light signal corresponding to given spatial resolution and detecting corresponding return light so as to obtain a reflectometric trace representing backscattered and reflected light as a function of a distance on the optical fiber link, and wherein said forward-direction light acquisition and said backward-direction light acquisition are performed with mutually different spatial resolutions; and deriving a value of at least one parameter characterizing an event at a location along said optical fiber link at least using the forward-direction light acquisition and the backward-direction light acquisition performed with mutually different spatial resolutions.
Abstract translation: 提供了用于表征光纤链路的双向光学反射测量方法。 该方法包括：从光纤链路的一端执行至少一个正向光采集，并从相对端执行至少一个反向光采集，其中每个光采集通过传播至少一个测试光信号 对应于给定的空间分辨率并检测相应的返回光，以获得表示作为光纤链路上的距离的函数的反向散射和反射光的反射光线，其中所述前向光获取和所述反向光获取是 以相互不同的空间分辨率进行; 以及至少使用以相互不同的空间分辨率执行的前向光采集和反向光采集，沿着所述光纤链路的位置导出表征事件的至少一个参数的值。
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公开(公告)号：US09134197B2
公开(公告)日：2015-09-15
申请号：US14014606
申请日：2013-08-30
Applicant: EXFO INC.
Inventor： Mario L'Heureux , Michel Leclerc , Eric Thomassin , Stephane Perron
CPC classification number: G01M11/3145 , G01M11/3109 , G01M11/3118 , G01M11/39
Abstract: There is provided a bi-directional optical reflectometric method for characterizing an optical fiber link. The method comprises: performing a plurality of forward-direction light acquisitions from one end of the optical fiber link and performing a plurality of backward-direction light acquisitions from the opposite end, wherein each light acquisition is performed by propagating at least one test light signal corresponding to given spatial resolution and detecting corresponding return light so as to obtain a reflectometric trace representing backscattered and reflected light as a function of a distance on the optical fiber link, and wherein said plurality of forward-direction light acquisitions and said plurality of backward-direction light acquisitions are each performed with mutually different spatial resolutions; and deriving a value of at least one parameter characterizing an event along said optical fiber link at least using a forward-direction light acquisition and a backward-direction light acquisition performed with mutually different spatial resolutions.
Abstract translation: 提供了用于表征光纤链路的双向光学反射测量方法。 该方法包括：从光纤链路的一端执行多个正向光采集，并从相对端执行多个反向光采集，其中每个光采集通过传播至少一个测试光信号 对应于给定的空间分辨率并检测相应的返回光，以便获得表示作为光纤链路上的距离的函数的反向散射和反射光的反射光迹，并且其中所述多个正向光采集和所述多个向后光取样， 方向光采集各自以相互不同的空间分辨率进行; 以及至少使用以相互不同的空间分辨率执行的前向光采集和反向光采集，沿着所述光纤链路导出表征事件的至少一个参数的值。
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公开(公告)号：US11340137B2
公开(公告)日：2022-05-24
申请号：US16722901
申请日：2019-12-20
Applicant: EXFO Inc.
Inventor： Michel Leclerc , Mario L'Heureux , Stephane Perron
Abstract: There are provided techniques for characterizing and testing a cable routing connection configuration connection arrangement comprising a plurality of optical fiber links connected between at least a first connection device at a first end and a second multi-fiber connection device at a second end. Test light is injected into one or more of the optical fiber links via corresponding optical fiber ports of the first connection device. At least one image of the second multi-fiber connection device is captured. Test light exiting the optical fiber link(s) through optical fiber port(s) of the second multi-fiber connection device is imaged as light spot(s) in the captured image. Positions on the second multi-fiber connection device that corresponds to the optical fiber port(s) are determined based on a pattern of the light spot(s) in the captured image. In some implementations, the provided techniques allow detection or verification of cable routing connection configurations at multi-fiber distribution panels.
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Patent Agency Ranking
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.
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公开(公告)号：US10574378B2
公开(公告)日：2020-02-25
申请号：US16388367
申请日：2019-04-18
Applicant: EXFO Inc.
Inventor： Bernard Ruchet , Mario L'Heureux , Daniel Gariepy , Etienne Morin-Drouin
IPC: H04B10/079 , H04J14/02
Abstract: A device and method for optical power measurement in an optical network supporting upstream and downstream signal propagation along an optical transmission path. An upstream wavelength analyzer receives upstream light extracted from the optical transmission path and is configured to determine an upstream spectral characteristic of the extracted upstream light. A downstream optical power meter assembly receives downstream light extracted from the optical transmission path and is configured to measure an optical power parameter of a downstream signal. A processing unit is configured to determine, based on the upstream spectral characteristic, at least one pass/fail threshold associated with the measured optical power parameter of the downstream signal.
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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。
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公开(公告)号：US12050149B2
公开(公告)日：2024-07-30
申请号：US17455229
申请日：2021-11-17
Applicant: EXFO Inc.
Inventor： Olivier Cote , Aymen Salahddine , Mario L'Heureux
CPC classification number: G01M11/31 , G02B6/3624 , G02B21/02 , G06T7/0004 , G06V10/10 , G06T2207/10056 , G06T2207/30164
Abstract: There is provided an optical-fiber connector endface inspection microscope system for inspecting an endface of an optical-fiber connector. It comprises one or more image detector for capturing at least one image of the endface to be inspected; an objective lens system comprising a focusing lens for adjusting a focus of the objective lens system on the image detector and a fixed relay lens; a main housing structure enclosing the image detector and the focusing lens; and at least one interchangeable optical head releasably connectable to the main housing structure and enclosing the fixed relay lens, wherein the optical head is releasably connectable to an adapter tip for interfacing with the optical-fiber connector to be inspected.
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公开(公告)号：US10371596B2
公开(公告)日：2019-08-06
申请号：US14820864
申请日：2015-08-07
Applicant: EXFO INC.
Inventor： Mario L'Heureux , Stephane Perron , Michel Leclerc
IPC: G01M11/00
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.
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