OPTICAL LOSS TESTING OF MULTI-FIBER ARRAY CABLES

    公开(公告)号:US20200249121A1

    公开(公告)日:2020-08-06

    申请号:US16776692

    申请日:2020-01-30

    Applicant: EXFO Inc.

    Inventor: Gang HE

    Abstract: There is provided an optical loss testing system for multi-fiber array cables an optical loss test method and a reference method therefor which overcomes at least part of the multi-powermeter uncertainty. A prior calibration step serves to characterize the relative difference in optical power response of the multiple power meters. This relative difference can then be used to correct the optical loss measurement so as to eliminate its effect.

    Systems and methods for validation of test results in network testing

    公开(公告)号:US20190384664A1

    公开(公告)日:2019-12-19

    申请号:US16284585

    申请日:2019-02-25

    Applicant: EXFO Inc.

    Abstract: A network testing system includes one or more test devices each including a media-specific testing module and a processing device with a network interface, wherein the processing device is configured to test a network with the media-specific testing module; one or more servers configured to receive test results from the test of the network either directly from the one or more test devices or an intermediate data source communicatively coupled to the one or more test devices; and a validator module executed on the one or more servers configured to perform automated post-processing on the test results to compare the test results to a pre-defined Method of Procedure (MOP), to auto-correct one or more errors in the test results, and to provide a report based on the comparison.

    Multiple-acquisition OTDR method and device

    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.

    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.

    Fiber-optic connector mating assembly for optical test instruments

    公开(公告)号:US09921373B2

    公开(公告)日:2018-03-20

    申请号:US14571808

    申请日:2014-12-16

    Applicant: EXFO Inc.

    Inventor: Sebastien Nadeau

    CPC classification number: G02B6/385 G01M11/3154 G02B6/4292

    Abstract: There is provided a mating assembly for mating a fiber-optic termination comprising a fiber-optic ferrule to an optical test instrument. The mating assembly comprises: a holding body having internal tubular dimensions substantially complementary to corresponding external dimensions of the fiber-optic ferrule of said fiber-optic termination, to hold the fiber-optic ferrule in a given alignment relative to the optical test instrument; and at least one deformable elastomeric feature extending inwardly in the holding body to frictionally engage on a smooth external surface of said fiber-optic ferrule and to provide friction thereon to retain said fiber-optic ferrule.

    Multiple-fiber connector inspection

    公开(公告)号:US09841579B2

    公开(公告)日:2017-12-12

    申请号:US14468453

    申请日:2014-08-26

    Applicant: EXFO INC.

    Inventor: Robert Baribault

    CPC classification number: G02B7/1822 G01M11/31 G02B7/003 H04N5/2252 H04N5/2254

    Abstract: A fiber inspection system for inspecting optical-fiber endfaces of a multiple-fiber connector is provided that includes a housing structure, a mating interface fixed relative to the housing structure for interfacing with the multiple-fiber connector, and an imaging assembly. The imaging assembly is enclosed in the housing structure and defines an inspection plane and an image plane, at least a plurality of the optical-fiber endfaces being disposed on the inspection plane, to within a focusing range, when the multiple-fiber connector is mated to the mating interface. The imaging assembly also defines an imaging axis between an inspection point on the inspection plane and a detection point on the image plane, and includes an alignment module disposed between the inspection plane and the image plane and controllable to move the inspection point across the inspection plane for selectively inspecting one or more of the optical-fiber endfaces.

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