公开(公告)号：US10951316B2

公开(公告)日：2021-03-16

申请号：US16852600

申请日：2020-04-20

Applicant: EXFO Inc.

Inventor： Jean-Sébastien Martel ,  Stéphane Perron

IPC: H04B10/27 ,  H04B10/071 ,  H04B10/079 ,  H04B10/25 ,  H04Q11/00 ,  H04W24/08

Abstract: Fronthaul monitoring systems and methods include a performing protocol testing, via a protocol layer acquisition module, of a protocol layer signal for analysis thereof to identify issues; performing optical physical layer monitoring via an optical physical layer acquisition module to identify optical physical layer issues; and configuring an optical switch to switch an input port connected to the protocol layer acquisition module and the optical physical layer acquisition module over different links of the plurality of links wherein a test coordinator software module is configured to manage the optical switch to coordinate the optical protocol layer analysis of a link and the optical physical layer testing of the link.

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

IPC: G01M11/00

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.

公开(公告)号：USD883825S1

公开(公告)日：2020-05-12

申请号：US29705515

申请日：2019-09-12

Applicant: EXFO Inc.

Designer： Francois Gaucher ,  Olivier Patry

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.

Inventor： Marc Rondeau ,  Michael Proctor

IPC: G06F11/07

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.

公开(公告)号：USD865549S1

公开(公告)日：2019-11-05

申请号：US29640248

申请日：2018-03-13

Applicant: EXFO INC.

Designer： Francois Gaucher ,  Olivier Patry ,  Michael Simard

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：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

IPC: G02B6/42 ,  G01M11/00 ,  G02B6/38

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.

公开(公告)号：US09915790B2

公开(公告)日：2018-03-13

申请号：US14962301

申请日：2015-12-08

Applicant: EXFO INC.

Inventor： Robert Baribault

IPC: G02B6/38 ,  G01N21/952 ,  G01N21/88 ,  G01M11/00 ,  G02B6/32 ,  G02B6/42 ,  G01N21/95 ,  G02B21/00

CPC classification number: G02B6/385 ,  G01M11/30 ,  G01M11/31 ,  G01N21/8803 ,  G01N21/952 ,  G01N2021/9511 ,  G02B6/32 ,  G02B6/381 ,  G02B6/423 ,  G02B6/4292 ,  G02B21/0016

Abstract: The fiber inspection microscope and power measurement system for inspecting an endface of an optical fiber at an angle-polished connector generally has: a mating interface for receiving the angle-polished connector, the endface causing a mean propagation direction of light exiting the optical fiber at endface to be tilted relative to an imaging path of the system; a converging element to be optically coupled to the endface and being configured to receive the tilted light and to redirect the tilted light toward the imaging path of the fiber inspection microscope system; and a power detection assembly optically coupled to the converging element, the power detection assembly being configured to detect an optical power associated with the tilted light redirected by the converging element.

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

IPC: G02B7/18 ,  G02B7/182 ,  H04N5/225 ,  G02B7/00 ,  G01M11/00

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.

公开(公告)号：US09825700B2

公开(公告)日：2017-11-21

申请号：US15220715

申请日：2016-07-27

Applicant: EXFO INC.

Inventor： Bernard Ruchet ,  Gang He

IPC: H04B10/08 ,  H04B10/079 ,  H04B10/2581 ,  H04B10/071 ,  G01M11/00

CPC classification number: H04B10/07955 ,  G01M11/3145 ,  G01M11/33 ,  H04B10/071 ,  H04B10/2581

Abstract: There is provided a method for measuring an optical power attenuation value of a multimode DUT. The method generally has, using an optical source, propagating test light along a multimode device link having a first multimode device, the multimode DUT and a second multimode device serially connected to one another; said propagating including inducing a preferential attenuation of high-order optical fiber modes of the test light along the first multimode device and along the second multimode device; using an optical power detector, detecting an optical signal resulting from the propagation of the test light along the multimode device link and transmitting an output signal based on the detected optical signal; and using a processor, determining the optical power attenuation value of the multimode DUT based on the output signal.