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    OPTICAL FIBER SENSING
    2.
    发明申请
    OPTICAL FIBER SENSING 有权

    公开(公告)号：US20210033430A1

    公开(公告)日：2021-02-04

    申请号：US16996373

    申请日：2020-08-18

    Applicant: University of Southampton

    Inventor： Andrei Donko ,  Ali Masoudi ,  Martynas Beresna ,  Gilberto Brambilla

    IPC: G01D5/353 ,  G01H9/00

    Abstract: A sensor system includes a radiation source, an optical fiber, and a detection device. The radiation source is arranged to emit pulses of radiation. The optical fiber comprises a first end and a core. The first end is arranged to receive pulses of radiation output from the radiation source such that, in use, the pulses of radiation are coupled into the fiber. The core is arranged to support propagation of the pulses of radiation along the fiber. The core includes a plurality of reflectors each comprising a portion of the core having a refractive index which is different to the refractive index of adjacent regions of the core. Reflections of a pulse of radiation from adjacent reflectors output at the first end of the fiber are resolvable from each other in the time domain. The detection device is arranged to measure radiation output from the first end of the fiber and resolve radiation reflected at different locations in the core of the fiber.

    MAGNETIC FIELD SENSORS, METHODS OF DETECTING A MAGNETIC FIELD, AND RELATED MAGNETICALLY RESPONSIVE LIGHT PROPAGATING COMPONENTS AND OPTICAL DEVICES
    3.
    发明申请
    MAGNETIC FIELD SENSORS, METHODS OF DETECTING A MAGNETIC FIELD, AND RELATED MAGNETICALLY RESPONSIVE LIGHT PROPAGATING COMPONENTS AND OPTICAL DEVICES 审中-公开

    公开(公告)号：US20200348371A1

    公开(公告)日：2020-11-05

    申请号：US16879575

    申请日：2020-05-20

    Applicant: University of Southampton

    Inventor： Rand Ismaeel ,  Ali Masoudi ,  Martynas Beresna ,  Gilberto Brambilla

    IPC: G01R33/032 ,  G02F1/01 ,  G02F1/00 ,  G02F1/095

    Abstract: A magnetic field sensor comprises a magnetically responsive light propagating component configured to cause a polarization of light propagating inside the component to be rotated in response to an applied magnetic field, wherein the magnetically responsive light propagating component is formed of a bulk material doped with a dopant, the dopant including at least gadolinium, the dopant concentration being at a sufficiently low concentration such that the dopant is uniformly dispersed in the bulk material to provide a high Verdet constant. The magnetic field sensor also comprises a detector, and a polarization-maintaining light input device to couple the light into the magnetically responsive light propagating component. The detector is configured to measure a property of light output from the magnetically responsive light propagating component to determine a change in polarization of the light, the change caused by the presence of a magnetic field.

    Optical fiber sensing
    4.
    发明授权
    Optical fiber sensing 有权

    公开(公告)号：US12259263B2

    公开(公告)日：2025-03-25

    申请号：US16996373

    申请日：2020-08-18

    Applicant: University of Southampton

    Inventor： Andrei Donko ,  Ali Masoudi ,  Martynas Beresna ,  Gilberto Brambilla

    IPC: G02B6/124 ,  G01D5/353 ,  G01H9/00 ,  G02B6/02 ,  G02B6/12

    Abstract: A sensor system includes a radiation source, an optical fiber, and a detection device. The radiation source is arranged to emit pulses of radiation. The optical fiber comprises a first end and a core. The first end is arranged to receive pulses of radiation output from the radiation source such that, in use, the pulses of radiation are coupled into the fiber. The core is arranged to support propagation of the pulses of radiation along the fiber. The core includes a plurality of reflectors each comprising a portion of the core having a refractive index which is different to the refractive index of adjacent regions of the core. Reflections of a pulse of radiation from adjacent reflectors output at the first end of the fiber are resolvable from each other in the time domain. The detection device is arranged to measure radiation output from the first end of the fiber and resolve radiation reflected at different locations in the core of the fiber.

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