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    HYBRID DISTRUBUTED ACOUSTIC TESTING
    3.
    发明申请
    HYBRID DISTRUBUTED ACOUSTIC TESTING 审中-公开

    公开(公告)号：US20200240834A1

    公开(公告)日：2020-07-30

    申请号：US16832847

    申请日：2020-03-27

    申请人： Saudi Arabian Oil Company ,  King Abdullah University of Science and Technology

    发明人： Frode Hveding ,  Islam Ashry ,  Mao Yuan ,  Mohd Sharizal Bin Alias ,  Boon Siew Ooi ,  Muhammad Arsalan

    IPC分类号： G01H9/00 ,  G01D5/353 ,  G01N21/47 ,  G01K11/32

    摘要： The subject matter of this specification can be embodied in, among other things, a method that includes separating, from a few mode optical fiber, a collection of backscattered Rayleigh signals based on a vibration of the few mode optical fiber at a vibration frequency at a first location along the few mode optical fiber, separating, from the few mode optical fiber, a collection of backscattered Stokes Raman signals and Anti-Stokes Raman signals based on a temperature of the few mode optical fiber at a second location along the few mode optical fiber, detecting the separated Rayleigh signals and Raman signals, determining, based on detecting the collection of backscattered Rayleigh traces, at least one of the first location, the vibration frequency, and an amplitude of the vibration, and determining, based on the detecting the collection of backscattered Raman signals, the temperature at the second location.

    Hybrid sensing-communication optical system and method
    7.
    发明授权
    Hybrid sensing-communication optical system and method 有权

    公开(公告)号：US11956016B2

    公开(公告)日：2024-04-09

    申请号：US17914039

    申请日：2021-03-08

    申请人： KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY

    发明人： Boon Siew Ooi ,  Islam Ashry ,  Yuan Mao

    IPC分类号： H04B10/00 ,  G02B6/02 ,  H04B10/2581 ,  H04J14/00

    CPC分类号： H04B10/2581 ,  G02B6/02042

    摘要： A hybrid sensing-communication system includes a multicore optical fiber that includes first and second cores, a first communication device optically coupled to a first end of the first core of the multicore optical fiber, a second communication device optically coupled to a second end of the first core of the multicore optical fiber, a first sensing device optically coupled to a first end of the second core of the multicore optical fiber, and a second sensing device optically coupled to a second end of the second core of the multicore optical fiber. The first and second communication devices exclusively exchange communication data along the first core, the first and second sensing devices exclusively exchange sensing data along the second core, and the communication data is different from the sensing data.

    Overcoming OTDR dead zones using a few-mode fiber
    8.
    发明授权
    Overcoming OTDR dead zones using a few-mode fiber 有权

    公开(公告)号：US11624681B2

    公开(公告)日：2023-04-11

    申请号：US16744918

    申请日：2020-01-16

    申请人： Saudi Arabian Oil Company ,  King Abdullah University of Science and Technology

    发明人： Frode Hveding ,  Islam Ashry ,  Mao Yuan ,  Boon Siew Ooi

    IPC分类号： G01M11/00

    摘要： Systems and methods include a method for overcoming optical time domain reflectometry (OTDR) dead zone limitations by using a few-mode fiber (FMF). Optical pulses are transmitted by a transmitter of an OTDR system through a mode MUX/DEMUX into an FMF. Light signals directed by the FMF in a backward direction through the mode MUX/DEMUX are received by the OTDR system through N single-mode fiber (SMF) ports corresponding to N modes in the FMF. Light signals from N−1 dead-zone-free SMF ports are collected by the OTDR system. Losses are measured and faults are located in the FMF based at least on the light signals.