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    Dual wavelength distributed temperature sensing with built-in fiber integrity monitoring
    2.
    发明授权
    Dual wavelength distributed temperature sensing with built-in fiber integrity monitoring 有权

    公开(公告)号：US11280687B2

    公开(公告)日：2022-03-22

    申请号：US16119807

    申请日：2018-08-31

    Applicant: VIAVI SOLUTIONS INC.

    Inventor： Andre Champavere

    IPC: G01K11/3206 ,  G01K1/00 ,  G01K3/14 ,  G01D5/353 ,  G01K11/324

    Abstract: In some examples, a temperature distribution sensor may include a laser source to emit a laser beam that is tunable to a first wavelength and a second wavelength for injection into a device under test (DUT). A first wavelength optical receiver may convert a return signal corresponding to the first wavelength with respect to Rayleigh backscatter or Raman backscatter Anti-Stokes. A second wavelength optical receiver may convert the return signal corresponding to the second wavelength with respect to Rayleigh backscatter or Raman backscatter Stokes. Bending loss associated with the DUT may be determined by utilizing the Rayleigh backscatter signal corresponding to the first wavelength and the Rayleigh backscatter signal corresponding to the second wavelength. Further, temperature distribution associated with the DUT may be determined by utilizing the Raman backscatter Anti-Stokes signal corresponding to the first wavelength and the Raman backscatter Stokes signal corresponding to the second wavelength.

    Dual-end loopback-based multi-fiber cable measurement
    4.
    发明授权
    Dual-end loopback-based multi-fiber cable measurement 有权

    公开(公告)号：US12264984B2

    公开(公告)日：2025-04-01

    申请号：US17873303

    申请日：2022-07-26

    Applicant: VIAVI SOLUTIONS INC.

    Inventor： Jerome Laferriere ,  Andre Champavere ,  Luis Fillipe Couto De Araujo Pereira

    IPC: G01M11/00

    Abstract: In some examples, dual-end loopback-based multi-fiber cable measurement may include connecting at least two multi-fiber loopback devices respectively to a near end and a far end of a multi-fiber cable to place at least two fibers of the multi-fiber cable in series. The at least two multi-fiber loopback devices may include a near-end multi-fiber loopback device connected to a fiber optic reflectometer and to the near end of the multi-fiber cable to connect together at least two near-end fibers of the multi-fiber cable. Further, the at least two multi-fiber loopback devices may include a far-end multi-fiber loopback device connected to the far end of the multi-fiber cable to connect together at least two far-end fibers of the multi-fiber cable.

    OPTICAL FIBER-BASED SENSING MEMBRANE
    5.
    发明申请
    OPTICAL FIBER-BASED SENSING MEMBRANE 有权

    公开(公告)号：US20220333962A1

    公开(公告)日：2022-10-20

    申请号：US17718416

    申请日：2022-04-12

    Applicant: VIAVI SOLUTIONS INC.

    Inventor： Jeffery Stephen GRAVES ,  Vincent Lecoeuche ,  Andre Champavere

    IPC: G01D21/02 ,  G01K11/324 ,  G01K11/322 ,  G01K11/3206 ,  G01H9/00

    Abstract: According to examples, an optical fiber-based sensing membrane may include at least one optical fiber, and a substrate. The at least one optical fiber may be integrated in the substrate. The substrate may include a thickness and a material property that are specified to ascertain, via the at least one optical fiber and for a device that is contiguously engaged with a surface of the substrate, includes the substrate embedded in the device, or includes the surface of the substrate at a predetermined distance from the device, a thermal and/or a mechanical property associated with the device, or a radiation level associated with a device environment.

    Wavelength identification and analysis sensor
    6.
    发明授权
    Wavelength identification and analysis sensor 有权

    公开(公告)号：US10425157B2

    公开(公告)日：2019-09-24

    申请号：US16224552

    申请日：2018-12-18

    Applicant: VIAVI SOLUTIONS INC.

    Inventor： Andre Champavere

    IPC: H04B10/079 ,  H04J14/02 ,  H04B10/572 ,  H04B10/25 ,  H04B10/071 ,  H04B10/075

    Abstract: According to examples, a wavelength identification and analysis sensor may include a wavelength transmitter, operably connectable to an input or output of a wavelength selective device of a wavelength division multiplex (WDM) network, to transmit test signals on a plurality of wavelengths into the input or output of the wavelength selective device of the WDM network. A wavelength analyzer is to detect returned signals from the input or output of the wavelength selective device of the WDM network, with each returned signal being associated with one of the transmitted test signals. Further, the wavelength analyzer is to analyze the returned signals and identify, based on the analysis of the returned signals, a wavelength associated with the input or output of the wavelength selective device of the WDM network.

    Dual wavelength distributed temperature sensing with built-in fiber integrity monitoring
    9.
    发明授权
    Dual wavelength distributed temperature sensing with built-in fiber integrity monitoring 有权

    公开(公告)号：US11860041B2

    公开(公告)日：2024-01-02

    申请号：US17566361

    申请日：2021-12-30

    Applicant: VIAVI SOLUTIONS INC.

    Inventor： Andre Champavere

    IPC: G01K11/3206 ,  G01D5/353 ,  G01K1/00 ,  G01K3/14 ,  G01K11/324 ,  H01S3/23

    CPC classification number: G01K11/3206 ,  G01D5/35361 ,  G01D5/35364 ,  G01K1/00 ,  G01K3/14 ,  G01K11/324 ,  H01S3/23 ,  H01S3/2391

    Abstract: In some examples, a temperature distribution sensor may include a laser source to emit a laser beam that is tunable to a first wavelength and a second wavelength for injection into a device under test (DUT). A first wavelength optical receiver may convert a return signal corresponding to the first wavelength with respect to Rayleigh backscatter or Raman backscatter Anti-Stokes. A second wavelength optical receiver may convert the return signal corresponding to the second wavelength with respect to Rayleigh backscatter or Raman backscatter Stokes. Bending loss associated with the DUT may be determined by utilizing the Rayleigh backscatter signal corresponding to the first wavelength and the Rayleigh backscatter signal corresponding to the second wavelength. Further, temperature distribution associated with the DUT may be determined by utilizing the Raman backscatter Anti-Stokes signal corresponding to the first wavelength and the Raman backscatter Stokes signal corresponding to the second wavelength.

    Wavelength identification and analysis sensor
    10.
    发明授权
    Wavelength identification and analysis sensor 有权

    公开(公告)号：US10181900B2

    公开(公告)日：2019-01-15

    申请号：US15397864

    申请日：2017-01-04

    Applicant: VIAVI SOLUTIONS INC.

    Inventor： Andre Champavere

    IPC: H04B10/079 ,  H04J14/02 ,  H04B10/572 ,  H04B10/25 ,  H04B10/071 ,  H04B10/075

    Abstract: According to examples, a wavelength identification and analysis sensor may include a wavelength transmitter, operably connectable to an input or output of a wavelength selective device of a wavelength division multiplex (WDM) network, to transmit test signals on a plurality of wavelengths into the input or output of the wavelength selective device of the WDM network. A wavelength analyzer is to detect returned signals from the input or output of the wavelength selective device of the WDM network, with each returned signal being associated with one of the transmitted test signals. Further, the wavelength analyzer is to analyze the returned signals and identify, based on the analysis of the returned signals, a wavelength associated with the input or output of the wavelength selective device of the WDM network.

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