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    Registering measured optical fiber interferometric data with reference optical fiber interferometric data
    4.
    发明授权
    Registering measured optical fiber interferometric data with reference optical fiber interferometric data 有权

    公开(公告)号：US10732075B2

    公开(公告)日：2020-08-04

    申请号：US15528911

    申请日：2016-04-01

    Applicant: INTUITIVE SURGICAL OPERATIONS, INC.

    Inventor： Dawn K. Gifford ,  Mark Froggatt ,  Patrick Roye ,  Jeffrey Lacroix

    IPC: G01M11/00 ,  G01L1/24 ,  G01K11/32 ,  G01D5/353

    Abstract: A system and method are used for an optical fiber having a core multiple, closely spaced optical gratings written along the core that create a repeated pattern in the core. A memory stores predetermined reference reflection data and measurement reflection data determined for a length of the core detected from interferometric patterns corresponding to scatter reflections received from the core. Data processing circuitry reduces or removes from the measurement reflection data information that corresponds to reflections due to the repeated pattern in the core to produce filtered measurement data. One or more portions of the filtered measurement data is/are correlated with one or more portions of the reference reflection data to produce multiple correlation values. The greatest of the multiple correlation values is determined, and a location along the fiber corresponding to the greatest correlation value is identified.

    Micro optic assemblies and optical interrogation systems
    7.
    发明授权
    Micro optic assemblies and optical interrogation systems 有权

    公开(公告)号：US10976155B2

    公开(公告)日：2021-04-13

    申请号：US16333752

    申请日：2017-08-16

    Applicant: INTUITIVE SURGICAL OPERATIONS, INC.

    Inventor： Mark Froggatt ,  Eric Sanborn ,  Alexander K. Sang

    IPC: G01B11/16 ,  G02B6/02 ,  G02B27/30 ,  G01B9/02 ,  G01D5/353 ,  G02B5/04 ,  G02B27/28 ,  G02B6/27

    Abstract: Example embodiments include an optical assembly for an optical interrogation system having a single core or a multicore sensing fiber, a measurement fiber to couple light into the sensing fiber, and a reference fiber arranged with the measurement fiber as part of an optical interferometer. A beam splitter combines light from the sensing fiber and with light from the reference fiber. A polarization beam splitting prism separates the combined light into first polarized light and second polarized light that is orthogonal to the first polarized light. The optical assembly can substantially reduce the size, complexity, or cost associated with the traditional optical components in an optical interrogation system that it replaces. Other example optical assemblies are described. Embodiments describe optical interrogation systems using the example optical assemblies.

    Interferometric alignment of optical multicore fibers to be connected
    10.
    发明授权
    Interferometric alignment of optical multicore fibers to be connected 有权

    公开(公告)号：US10416391B2

    公开(公告)日：2019-09-17

    申请号：US15524388

    申请日：2016-03-24

    Applicant: INTUITIVE SURGICAL OPERATIONS, INC.

    Inventor： Mark Froggatt ,  Eric Sanborn ,  Jeffrey Lacroix

    IPC: G02B6/02 ,  G02B6/38 ,  G01B11/27 ,  G01M11/00

    Abstract: The ends of sensing and interrogating multicore fibers are brought into proximity for connection in a first orientation with one or more cores in the sensing fiber being paired up with corresponding one or more cores in the interrogating fiber. Optical interferometry is used to interrogate at least one core pair and to determine a first reflection value that represents a degree of alignment for the core pair in the first orientation. The relative position is adjusted between the ends of the fibers to a second orientation. Interferometry is used to interrogate the core pair and determine a second reflection value that represents a degree of alignment for the core pair in the second orientation. The first reflection value is compared with the second reflection value, and an aligned orientation is identified for connecting the sensing and interrogating fibers based on the comparison.

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