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1.发明申请公开(公告)号：US20220074810A1
公开(公告)日：2022-03-10
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：US20210135752A1
公开(公告)日：2021-05-06
申请号：US17088157
申请日：2020-11-03
Applicant: EXFO Inc.
Inventor： Mario L'HEUREUX , Stephane PERRON
IPC: H04B10/071 , G01M11/00 , H04B10/035 , G01D5/353 , H05B45/20 , H05B45/22
Abstract: There is provided an OTDR receive device and an OTDR system comprising an OTDR receive device 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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3.发明公开公开(公告)号：US20230367082A1
公开(公告)日：2023-11-16
申请号：US18310861
申请日：2023-05-02
Applicant: EXFO Inc.
Inventor： Olivier COTE , Mario L'HEUREUX , Raphael LABERGE
CPC classification number: G02B6/385 , G02B6/3825 , G02B6/3853 , G02B21/0016 , G02B21/0008
Abstract: There is provided an adapter tip to be employed with an optical-fiber connector-endface inspection microscope device and an optical-fiber connector endface inspection microscope system suitable for imaging the endface of a duplex optical-fiber connector. Because of the distance between the ferrules of a duplex connector, the field of view of a typical single-fiber or multi-fiber inspection microscope may not be wide enough to allow inspection of both ferrules at once. The proposed adapter tip or microscope system may comprise relay optics configured to laterally shift the optical path of the light beam reflected from one optical fiber endface (corresponding the first ferrule) toward that from the other optical fiber endface (corresponding the second ferrule), so that both endfaces may be imaged within the field of view of the inspection microscope.
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公开(公告)号：US20190245641A1
公开(公告)日：2019-08-08
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: H04J14/02 , H04B10/079
CPC classification number: H04J14/02 , H04B10/07955 , H04J14/0221
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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Patent Agency Ranking
公开(公告)号：US20170085318A1
公开(公告)日：2017-03-23
申请号：US15263986
申请日：2016-09-13
Applicant: EXFO INC.
Inventor： Bernard RUCHET , Mario L'HEUREUX , Daniel GARIEPY
IPC: H04B10/079 , H04J14/02 , H04B10/27
CPC classification number: H04B10/07955 , H04B10/079 , H04B10/27 , H04J14/0221
Abstract: A passive optical network (PON) device and method for optical power measurement along an optical transmission path supporting bidirectional propagation of downstream light and upstream light between two network elements of a PON is provided. The device includes an optical power splitter assembly extracting respective portions of the upstream and downstream light, and an upstream wavelength analyzer determining, from the extracted upstream light, an upstream spectral characteristic of the upstream light. The device also includes a processing unit determining, based on the upstream spectral characteristic, a downstream spectral characteristic of a downstream signal of interest among a plurality of downstream signals of the downstream light, and a downstream filter assembly filtering the extracted downstream light to select a portion of the downstream signal of interest. The device further includes a downstream optical power meter assembly measuring an optical power parameter of the selected portion of the downstream signal of interest.
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公开(公告)号：US20220170816A1
公开(公告)日：2022-06-02
申请号：US17455229
申请日：2021-11-17
Applicant: EXFO Inc.
Inventor： Olivier COTE , Aymen SALAHDDINE , Mario L'HEUREUX
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：US20220170815A1
公开(公告)日：2022-06-02
申请号：US17455225
申请日：2021-11-17
Applicant: EXFO Inc.
Inventor： Nicolas CARON , Olivier COTE , Mario L'HEUREUX
Abstract: There are provided systems and methods for inspecting an endface of an optical-fiber connector using an optical-fiber connector endface inspection microscope system comprising one or more image detectors for capturing images over the whole endface to be inspected. An illumination system comprises two or more illumination sources disposed so as to illuminate respective regions over the connector endface and to prevent dark zones in the capture images. The illumination sources are activated in sequence, such that adjacent sources are never activated at the same time, and corresponding images captured in sequence, i.e., one after the other. In this case, it is also possible to activate the illumination sources in sequence, such that adjacent sources are never activated at the same time. Activating the illumination sources separately eliminates the illumination overlap and so eliminates the double image artifact. This allows for a more uniformly lit image with less dark spots.
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公开(公告)号：US20210063274A1
公开(公告)日：2021-03-04
申请号：US16944853
申请日：2020-07-31
Applicant: EXFO Inc.
Inventor： Olivier COTE , Nicolas CARON , Mario L'HEUREUX , Robert BARIBAULT
Abstract: There is therefore provided a method, system and computer program for detecting duplicate optical-fiber connector endface inspections performed on a same optical-fiber connector. Duplicate optical-fiber connector endface inspections can be detected by extracting a signature of the optical-fiber connector endface from the acquired optical-fiber connector endface inspection image to uniquely identify the optical-fiber connector and detect duplicate optical-fiber connector endface inspections. The signature can be stored to help detection of inadvertent or fraudulent duplicate or repetitive measurements made on a same optical-fiber connector.
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公开(公告)号：US20180076890A1
公开(公告)日：2018-03-15
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: H04B10/079 , H04J14/02 , H04B10/27 , H04B10/67 , H04B10/077
CPC classification number: H04J14/02 , H04B10/07955 , H04J14/0221
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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