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12 条记录 (耗时 0.016 秒)

    Multi-channel low coherence interferometer
    2.
    发明授权
    Multi-channel low coherence interferometer 失效
    多通道低相干干涉仪

    公开(公告)号：US07488930B2

    公开(公告)日：2009-02-10

    申请号：US11445514

    申请日：2006-06-02

    申请人： Mahesh Ajgaonkar ,  Gerard A. Alphonse

    发明人： Mahesh Ajgaonkar ,  Gerard A. Alphonse

    IPC分类号： G02B6/00

    CPC分类号： G01B9/0205 ,  G01B9/02028 ,  G01B9/0209 ,  G01B2290/70

    摘要： A multi-channel low coherence interferometer having sensing and reference arms, at least one of which has variable delay. The sensing arm includes an optical switch for connecting to two or more probe arms. The distal ends of the probe arms collect source light backscattered from a sample. The backscattered light collected by the distal end of a probe arm is combined with reference light and a low coherence interferometric signal is produced by a sweep of a variable delay of the device or a sweep of a variable frequency laser light source. The interference signal produced by the interaction of reference and sensing light at a detector measures backscattered light, which may be used to characterize the sample. The low coherence interferometric signals can provide information about the morphology, physical nature, composition, and properties of the sample. The device may be used to discriminate between finished surfaces and corroded surfaces, healthy and diseased tissue, and can sample the material or tissue in two or more areas. Versions of the invention include devices that are interferometers and or autocorrelators.

    摘要翻译： 具有感测和参考臂的多通道低相干干涉仪，其中至少一个具有可变的延迟。 感测臂包括用于连接到两个或更多个探针臂的光学开关。 探头臂的远端收集从样品反向散射的光源。 由探针臂的远端收集的背散射光与参考光结合，并且通过扫描可变延迟器件或扫描可变频率激光光源来产生低相干干涉信号。 在检测器处的​​参考和感测光的相互作用产生的干涉信号测量可以用于表征样品的反向散射光。 低相干干涉信号可以提供关于样品的形态，物理性质，组成和性质的信息。 该装置可以用于区分完成的表面和腐蚀的表面，健康和患病组织，并且可以在两个或更多个区域中对材料或组织进行采样。 本发明的版本包括作为干涉仪和/或自相关器的装置。

    METHODS AND SYSTEMS FOR EXTENDING THE RANGE FOR FIBER OPTIC DISTRIBUTED TEMPERATURE (DTS) SYSTEMS
    5.
    发明申请
    METHODS AND SYSTEMS FOR EXTENDING THE RANGE FOR FIBER OPTIC DISTRIBUTED TEMPERATURE (DTS) SYSTEMS 有权
    用于扩展光纤分布温度（DTS）系统范围的方法和系统

    公开(公告)号：US20110280277A1

    公开(公告)日：2011-11-17

    申请号：US12735356

    申请日：2009-01-17

    申请人： Lee Chung ,  Kalar Kent ,  Mahesh Ajgaonkar ,  Michael Sanders

    发明人： Lee Chung ,  Kalar Kent ,  Mahesh Ajgaonkar ,  Michael Sanders

    IPC分类号： G01N21/47 ,  G01K3/00 ,  G01K11/32

    CPC分类号： G01K11/32

    摘要： Systems and methods for extending the range of a fiber optic DTS system are provided. In one respect, a method may provide steps for transmitting, in a first time period, an optical signal at a first energy level through an optical fiber, collecting backscatter signals as a result of the first transmission, adjusting the first energy level to a second energy level, transmitting, in an additional time period, the adjusted optical signal through the optical fiber, collecting backscatter signals as a result of the adjusted transmissions, and using a portion of the collected backscatter as a result of the first transmission and a portion of the collected backscatter as a result of the additional transmissions, determining one or more parameter profiles, such as a temperature profile.

    摘要翻译： 提供了用于扩展光纤DTS系统范围的系统和方法。 在一个方面，一种方法可以提供在第一时间段内通过光纤在第一能级发射光信号的步骤，作为第一传输的结果收集反向散射信号，将第一能级调整到第二能级 能量水平，在额外的时间段内通过光纤传输经调整的光信号，作为经调整的传输的结果收集后向散射信号，并且作为第一次传输的结果使用收集的反向散射的一部分， 作为附加传输的结果的收集的反向散射，确定一个或多个参数分布，诸如温度分布。

    Multi-channel low coherence interferometer
    6.
    发明申请
    Multi-channel low coherence interferometer 失效
    多通道低相干干涉仪

    公开(公告)号：US20070278389A1

    公开(公告)日：2007-12-06

    申请号：US11445514

    申请日：2006-06-02

    申请人： Mahesh Ajgaonkar ,  Gerard Alphonse

    发明人： Mahesh Ajgaonkar ,  Gerard Alphonse

    IPC分类号： G06M7/00

    CPC分类号： G01B9/0205 ,  G01B9/02028 ,  G01B9/0209 ,  G01B2290/70

    摘要： A multi-channel low coherence interferometer having sensing and reference arms, at least one of which has variable delay. The sensing arm includes an optical switch for connecting to two or more probe arms. The distal ends of the probe arms collect source light backscattered from a sample. The backscattered light collected by the distal end of a probe arm is combined with reference light and a low coherence interferometric signal is produced by a sweep of a variable delay of the device or a sweep of a variable frequency laser light source. The interference signal produced by the interaction of reference and sensing light at a detector measures backscattered light, which may be used to characterize the sample. The low coherence interferometric signals can provide information about the morphology, physical nature, composition, and properties of the sample. The device may be used to discriminate between finished surfaces and corroded surfaces, healthy and diseased tissue, and can sample the material or tissue in two or more areas. Versions of the invention include devices that are interferometers and or autocorrelators.

    摘要翻译： 具有感测和参考臂的多通道低相干干涉仪，其中至少一个具有可变的延迟。 感测臂包括用于连接到两个或更多个探针臂的光学开关。 探头臂的远端收集从样品反向散射的光源。 由探针臂的远端收集的背散射光与参考光结合，并且通过扫描可变延迟器件或扫描可变频率激光光源来产生低相干干涉信号。 在检测器处的​​参考和感测光的相互作用产生的干涉信号测量可以用于表征样品的反向散射光。 低相干干涉信号可以提供关于样品的形态，物理性质，组成和性质的信息。 该装置可以用于区分完成的表面和腐蚀的表面，健康和患病组织，并且可以在两个或更多个区域中对材料或组织进行采样。 本发明的版本包括作为干涉仪和/或自相关器的装置。

    Methods and systems for extending the range for fiber optic distributed temperature (DTS) systems
    8.
    发明授权
    Methods and systems for extending the range for fiber optic distributed temperature (DTS) systems 有权
    扩展光纤分布式温度（DTS）系统范围的方法和系统

    公开(公告)号：US08333505B2

    公开(公告)日：2012-12-18

    申请号：US12735356

    申请日：2009-01-17

    申请人： Chung Lee ,  Kent Kalar ,  Mahesh Ajgaonkar ,  Michael Sanders

    发明人： Chung Lee ,  Kent Kalar ,  Mahesh Ajgaonkar ,  Michael Sanders

    IPC分类号： G01K3/00

    CPC分类号： G01K11/32

    摘要： Systems and methods for extending the range of a fiber optic DTS system are provided. In one respect, a method may provide steps for transmitting, in a first time period, an optical signal at a first energy level through an optical fiber, collecting backscatter signals as a result of the first transmission, adjusting the first energy level to a second energy level, transmitting, in an additional time period, the adjusted optical signal through the optical fiber, collecting backscatter signals as a result of the adjusted transmissions, and using a portion of the collected backscatter as a result of the first transmission and a portion of the collected backscatter as a result of the additional transmissions, determining one or more parameter profiles, such as a temperature profile.

    摘要翻译： 提供了用于扩展光纤DTS系统范围的系统和方法。 在一个方面，一种方法可以提供在第一时间段内通过光纤在第一能级发射光信号的步骤，作为第一传输的结果收集反向散射信号，将第一能级调整到第二能级 能量水平，在额外的时间段内通过光纤传输经调整的光信号，作为经调整的传输的结果收集后向散射信号，并且作为第一次传输的结果使用收集的反向散射的一部分， 作为附加传输的结果的收集的反向散射，确定一个或多个参数分布，诸如温度分布。

    PURE SILICA CORE MULTIMODE FIBER SENSOES FOR DTS APPICATIONS
    9.
    发明申请
    PURE SILICA CORE MULTIMODE FIBER SENSOES FOR DTS APPICATIONS 有权
    纯硅胶多芯片光纤信号用于DTS应用

    公开(公告)号：US20100103978A1

    公开(公告)日：2010-04-29

    申请号：US12451866

    申请日：2008-07-18

    申请人： Chung Lee ,  Kwang Suh ,  Mahesh Ajgaonkar ,  Kent Kalar

    发明人： Chung Lee ,  Kwang Suh ,  Mahesh Ajgaonkar ,  Kent Kalar

    IPC分类号： G01K3/00

    CPC分类号： G01K11/32 ,  G02B6/02004

    摘要： A new step-index multimode pure silica core fiber for DTS (Distributed Temperature Sensing) system particularly useful for downhole environments is disclosed and described. The new sensor system provides optimum tradeoffs between coupling power, spatial resolution, and temperature resolution.

    摘要翻译： 公开和描述了一种用于DTS（分布式温度感测）系统的新的步进折射率多模纯硅芯光纤，特别适用于井下环境。 新的传感器系统提供耦合功率，空间分辨率和温度分辨率之间的最佳折衷。