中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

199 records (took 0.033 seconds)

    Testing fiber arrangement in multi-fiber cables
    131.
    发明授权
    Testing fiber arrangement in multi-fiber cables 有权

    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.

    METHOD AND SYSTEM FOR MULTI-FIBER CABLE TESTING
    132.
    发明申请
    METHOD AND SYSTEM FOR MULTI-FIBER CABLE TESTING 审中-公开

    公开(公告)号：US20190170610A1

    公开(公告)日：2019-06-06

    申请号：US15950709

    申请日：2018-04-11

    Applicant: EXFO Inc.

    Inventor： Stephane PERRON ,  Daniel GARIEPY ,  Nicolas CARON ,  Robert BARIBAULT ,  Vincent RACINE

    IPC: G01M11/00

    CPC classification number: G01M11/33 ,  G02B6/385 ,  G02B6/3885 ,  H04B10/0731

    Abstract: There is provided a method, system and image capture device for determining a polarity of a multi-fiber cable link comprising a plurality of optical fiber links each connected between a first multi-fiber connector and a second multi-fiber connector, according to said polarity. Test light is injected into one or more of the optical fiber links via corresponding injection ports of the first multi-fiber connector, in accordance with a defined injection pattern; at least one polarity-testing image of the second multi-fiber connector is generated in which test light exiting at least one of the optical fiber links through one or more exit ports of the second multi-fiber connector is imaged as one or more spotlight spots in the polarity-testing image; and the polarity of the multi-fiber cable link is determined based on a pattern of said one or more spotlight spots in said polarity-testing image.

    Optical power measurement in a passive optical network
    133.
    发明授权
    Optical power measurement in a passive optical network 有权

    公开(公告)号：US09831948B2

    公开(公告)日：2017-11-28

    申请号：US15263986

    申请日：2016-09-13

    Applicant: EXFO INC.

    Inventor： Bernard Ruchet ,  Mario L'Heureux ,  Daniel Gariepy

    IPC: H04B17/00 ,  H04B10/079 ,  H04B10/27 ,  H04J14/02

    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.

    Method and system for measuring an optical loss value of an optical fiber link
    136.
    发明授权
    Method and system for measuring an optical loss value of an optical fiber link 有权

    公开(公告)号：US09709460B2

    公开(公告)日：2017-07-18

    申请号：US14575409

    申请日：2014-12-18

    Applicant: EXFO INC.

    Inventor： Michel Leblanc ,  Stéphane Perron

    IPC: G01M11/00

    CPC classification number: G01M11/31 ,  G01M11/3145 ,  G01M11/3172

    Abstract: The reflectometric method for measuring an optical loss value of an optical fiber link generally comprises: obtaining at least one bias value being indicative of a bias induced by differing backscattering characteristics of a first optical fiber length and a second optical fiber length; propagating at least one test signal serially into the first optical fiber length, the optical fiber link and the second optical fiber length; monitoring at least one return signal resulting respectively from the propagation of the at least one test signal; and determining the optical loss value based on the at least one return signal and the at least one bias value.

    Method and apparatus for testing transmission lines normally propagating optical signals
    138.
    发明授权
    Method and apparatus for testing transmission lines normally propagating optical signals 有权

    公开(公告)号：US09654213B2

    公开(公告)日：2017-05-16

    申请号：US15069365

    申请日：2016-03-14

    Applicant: EXFO Inc.

    Inventor： Bernard Ruchet ,  Normand Cyr

    IPC: H04J14/00 ,  H04B10/079 ,  H04B3/46 ,  H04Q11/00

    CPC classification number: H04B10/07955 ,  H04B3/46 ,  H04B10/079 ,  H04B10/0793 ,  H04B10/0795 ,  H04B10/07953 ,  H04Q11/0067 ,  H04Q2011/0083

    Abstract: A portable apparatus for measuring optical powers of optical signals propagating concurrently in opposite directions in an optical transmission path between two elements, at least one of the elements being operative to transmit a first optical signal (S1) only if it continues to receive a second optical signal (S2) from the other of said elements, comprises first and second connector means for connecting the apparatus into the optical transmission path in series therewith, and propagating and measuring means connected between the first and second connector means for propagating at least the second optical signal (S2) towards the one of the elements, and measuring the optical powers of the concurrently propagating optical signals (S1, S2). The measurement results may be displayed by a suitable display unit. Where one element transmits signals at two different wavelengths, the apparatus may separate parts of the corresponding optical signal portion according to wavelength and process them separately.

    ADAPTER TIP AND MICROSCOPE SYSTEM FOR INSPECTION OF FIBER-OPTIC CONNECTOR ENDFACE
    139.
    发明申请
    ADAPTER TIP AND MICROSCOPE SYSTEM FOR INSPECTION OF FIBER-OPTIC CONNECTOR ENDFACE 有权
    用于检查光纤连接器端面的适配器提示和显微镜系统

    公开(公告)号：US20160341904A1

    公开(公告)日：2016-11-24

    申请号：US15160398

    申请日：2016-05-20

    Applicant: EXFO Inc.

    Inventor： Etienne Morin-Drouin ,  Robert Baribault

    IPC: G02B6/36 ,  G01M11/00

    CPC classification number: G02B6/3628 ,  G01M11/31 ,  G02B6/0006 ,  G02B6/385

    Abstract: There is provided an adapter tip to be employed with an optical-fiber inspection microscope probe and an optical-fiber inspection microscope system suitable for imaging the optical-fiber endface of an angled-polished optical-fiber connector deeply recessed within a connector adapter. The adapter tip or microscope system comprises a relay lens system having at least a first relay lens which is disposed so as to directly receive light reflected from the optical-fiber endface during inspection, the lens axis of the first relay lens being offset relative to the optical-fiber endface so as to deviate light reflected from the optical-fiber endface towards the optical-fiber axis of the connector.

    Abstract translation: 提供了一种用于光纤检查显微镜探针和光纤检查显微镜系统的适配器尖端，其适用于将凹入在连接器适配器内的倾斜抛光光纤连接器的光纤端面成像。 适配器尖端或显微镜系统包括具有至少第一中继透镜的中继透镜系统，该第一中继透镜被设置为在检查期间直接接收从光纤端面反射的光，第一中继透镜的透镜轴相对于 光纤端面，以将从光纤端面反射的光偏向连接器的光纤轴。

Patent Agency Ranking