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    INTERFEROMETRIC MEASUREMENT WITH CROSSTALK SUPPRESSION
    4.
    发明公开
    INTERFEROMETRIC MEASUREMENT WITH CROSSTALK SUPPRESSION 审中-公开
    INTERFEROMETRISCHE MESSUNG MITÜBERSPRECHUNGS-UNTERDRÜCKUNG

    公开(公告)号：EP2577221A2

    公开(公告)日：2013-04-10

    申请号：EP11790200.7

    申请日：2011-05-23

    申请人： Luna Innovations Incorporated

    发明人： FROGGATT, Mark, E. ,  KLEIN, Justin, W.

    IPC分类号： G01B9/02 ,  G01N21/45

    CPC分类号： G01B9/02027 ,  G01B9/02004 ,  G01B9/02056 ,  G01B11/161 ,  G01B11/18 ,  G01B2290/45 ,  G01D5/35309 ,  G01D5/3538

    摘要： An interferometric measurement system suppresses cross talk between optical waveguides used to measure one or more parameters. A first interferometric measurement channel coupled to a first waveguide, and a second interferometric measurement channel coupled to a second waveguide. At least one of the channels includes a reference light path in addition to the first and second waveguides. A reference path optical delay is associated with the reference light path, a first optical delay is associated with the input portion of at least one of the first and second interferometric measurement channels, and a second, optical delay is associated with an output portion of the one interferometric measurement channel. A value of the first optical delay and a value the second optical delay are chosen to suppress crosstalk associated with the other of the first and second interferometric measurement channels in the one interferometric measurement channel over a predetermined length of the first waveguide. Signals corresponding to the reference light path and the first and second interferometric measurement channels are processed to measure one or more parameters.

    摘要翻译： 干涉测量系统抑制用于测量一个或多个参数的光波导之间的串扰。 耦合到第一波导的第一干涉测量通道和耦合到第二波导的第二干涉测量通道。 除了第一和第二波导之外，至少一个通道包括参考光路。 参考路径光学延迟与参考光路相关联，第一光学延迟与第一和第二干涉测量通道中的至少一个的输入部分相关联，并且第二光学延迟与一个的输出部分相关联 干涉测量通道。 选择第一光学延迟的值和第二光学延迟的值来抑制与第一波导的预定长度上的一个干涉测量通道中的第一和第二干涉测量通道中的另一个相关联的串扰。 对应于参考光路和第一和第二干涉测量通道的信号被处理以测量一个或多个参数。

    STRAIN SENSING WITH OPTICAL FIBER ROSETTES
    5.
    发明公开
    STRAIN SENSING WITH OPTICAL FIBER ROSETTES 审中-公开
    BELASTUNGSERFASSUNG MIT GLASFASERRASETTEN

    公开(公告)号：EP2556332A2

    公开(公告)日：2013-02-13

    申请号：EP11766631.3

    申请日：2011-04-06

    申请人： Luna Innovations Incorporated

    发明人： FROGGATT, Mark, E. ,  GIFFORD, Dawn, K.

    IPC分类号： G01B11/16 ,  G01L1/24

    CPC分类号： G01L1/246 ,  G01D5/35306 ,  G01K11/3206

    摘要： One or more mechanical parameters of a structure subjected to a force or condition are measured using distributed, optical fiber sensing technology. At least a curved portion an optical fiber having is attached to an object. A distributed, optically- based, strain sensing technique is used to determine strain information associated with multiple points along the curved portion of the fiber. The determined strain information is processed to generate one or more representations of one or more of the following: an expansion of the object, a thermal gradient associated with the object, or a stress- induced strain at multiple locations on the object corresponding to ones of the multiple points. An output is generated corresponding to the representation.

    摘要翻译： 使用分布式光纤传感技术测量受到力或条件的结构的一个或多个机械参数。 至少弯曲部分具有附接到物体的光纤。 使用分布式，基于光学的应变感测技术来确定与沿着光纤的弯曲部分的多个点相关联的应变信息。 所确定的应变信息被处理以产生以下中的一个或多个的一个或多个表示：对象的扩展，与对象相关联的热梯度，或对象上的多个位置处的应力诱发应变 多点。 根据表示生成输出。

    OPTICAL POSITION AND/OR SHAPE SENSING
    6.
    发明公开
    OPTICAL POSITION AND/OR SHAPE SENSING 审中-公开
    OPTSCHE POSITIONS-UND / ODER FORMMESSUNG

    公开(公告)号：EP2478331A2

    公开(公告)日：2012-07-25

    申请号：EP10817557.1

    申请日：2010-09-16

    申请人： Luna Innovations Incorporated

    发明人： FROGGATT, Mark, E. ,  KLEIN, Justin, W. ,  GIFFORD, Dawn, K. ,  KREGER, Stephen, Tod

    IPC分类号： G01B11/24 ,  G02B6/10 ,  G01N21/41

    CPC分类号： G01B11/24 ,  G01B11/16 ,  G01B11/168 ,  G01B11/18 ,  G01L1/242 ,  G01L1/246 ,  G02B6/02042

    摘要： An accurate measurement method and apparatus are disclosed for shape sensing with a multi-core fiber. A change in optical length is detected in ones of the cores in the multi-core fiber up to a point on the multi-core fiber. A location and/or a pointing direction are/is determined at the point on the multi-core fiber based on the detected changes in optical length. The accuracy of the determination is better than 0.5% of the optical length of the multi-core fiber up to the point on the multi-core fiber. In a preferred example embodiment, the determining includes determining a shape of at least a portion of the multi-core fiber based on the detected changes in optical length.

    摘要翻译： 公开了一种使用多芯光纤进行形状检测的精确测量方法和装置。 在多芯光纤中的核心中的多核光纤中的一个核心中检测到光学长度的变化。 基于检测到的光学长度的变化，在多芯光纤上的点处确定位置和/或指向方向。 多核纤维直到多核纤维上的点，其测定精度优于多核纤维的光学长度的0.5％。 在优选示例性实施例中，确定包括基于检测到的光学长度的变化来确定多芯光纤的至少一部分的形状。