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1. 发明申请

US20120057841A1 Registration of an extended reference for parameter measurement in an optical sensing system 有权
标题翻译：在光学传感系统中注册参数测量的扩展参考
公开(公告)号：US20120057841A1
公开(公告)日：2012-03-08
申请号：US13222577
申请日：2011-08-31
申请人： Paul F. Wysocki , Alan Heaney , Stephen Kreger , Mark Froggatt , Kenneth Walker
发明人： Paul F. Wysocki , Alan Heaney , Stephen Kreger , Mark Froggatt , Kenneth Walker
IPC分类号： G02B6/00 , C03B37/01
CPC分类号： G02B6/243
摘要： A method and structure for terminating an optical fiber are disclosed that provide an optical fiber termination structure with a small volume and very low return loss, even when the termination is in close proximity to reflective surfaces. In one example embodiment, the optical fiber termination reduces reflections into the one or more cores to a return loss of −70 dB or less regardless of the presence of surfaces proximate the optical fiber termination. At the same time, a length of the optical fiber termination is less than 5 mm and a largest transverse dimension of the optical fiber termination is less than 325 um. The optical fiber termination is useful in fiber sensing applications in general and is particularly effective for terminating a multi-core fiber used in a distributed shape sensing application.
摘要翻译：公开了用于端接光纤的方法和结构，其提供具有小体积和非常低的回波损耗的光纤终端结构，即使当终端紧靠反射表面时。在一个示例实施例中，光纤终端将反射到一个或多个核心中，使得接近光纤终端的表面的存在而减小到-70dB或更小的回波损耗。同时，光纤终端的长度小于5mm，光纤终端的最大横向尺寸小于325μm。光纤终端通常在光纤传感应用中是有用的，并且对于终止分布形状感测应用中使用的多芯光纤是特别有效的。

2. 发明授权

US08842963B2 Reducing reflection at termination of optical fiber in a small volume 有权
标题翻译：减少光纤终端反射，体积小
公开(公告)号：US08842963B2
公开(公告)日：2014-09-23
申请号：US13222577
申请日：2011-08-31
申请人： Paul F. Wysocki , Alan Heaney , Stephen Kreger , Mark Froggatt , Ken Walker
发明人： Paul F. Wysocki , Alan Heaney , Stephen Kreger , Mark Froggatt , Ken Walker
IPC分类号： G02B6/00
CPC分类号： G02B6/243
摘要： A method and structure for terminating an optical fiber are disclosed that provide an optical fiber termination structure with a small volume and very low return loss, even when the termination is in close proximity to reflective surfaces. In one example embodiment, the optical fiber termination reduces reflections into the one or more cores to a return loss of −70 dB or less regardless of the presence of surfaces proximate the optical fiber termination. At the same time, a length of the optical fiber termination is less than 5 mm and a largest transverse dimension of the optical fiber termination is less than 325 um. The optical fiber termination is useful in fiber sensing applications in general and is particularly effective for terminating a multi-core fiber used in a distributed shape sensing application.
摘要翻译：公开了用于端接光纤的方法和结构，其提供具有小体积和非常低的回波损耗的光纤终端结构，即使当终端紧靠反射表面时。在一个示例实施例中，光纤终端将反射到一个或多个核心中，使得接近光纤终端的表面的存在而减小到-70dB或更小的回波损耗。同时，光纤终端的长度小于5mm，光纤终端的最大横向尺寸小于325μm。光纤终端通常在光纤传感应用中是有用的，并且对于终止分布形状感测应用中使用的多芯光纤是特别有效的。

3. 发明授权

US07515276B2 High resolution interferometric optical frequency domain reflectometry (OFDR) beyond the laser coherence length 有权
标题翻译：高分辨率干涉光学频域反射（OFDR）超出激光相干长度
公开(公告)号：US07515276B2
公开(公告)日：2009-04-07
申请号：US11779527
申请日：2007-07-18
申请人： Mark Froggatt , Ryan J. Seeley , Dawn K. Gifford
发明人： Mark Froggatt , Ryan J. Seeley , Dawn K. Gifford
IPC分类号： G01B9/02
CPC分类号： G01M11/3172
摘要： The technology described here enables the use of an inexpensive laser to measure an interferometric response of an optical device under test (DUT) at reflection lengths significantly greater than the coherence length of the laser. This is particularly beneficial in practical interferometric applications where cost is a concern. In other words, inexpensive lasers having shorter coherence lengths may be used to achieve very high interferometric measurements at longer DUT reflection lengths. The technology also enables the use of such inexpensive lasers to measure Rayleigh scatter in commercial-grade, single-mode optical fiber.
摘要翻译：这里描述的技术使得能够使用廉价的激光器以显着大于激光器的相干长度的反射长度来测量被测光学器件（DUT）的干涉测量响应。这在成本是关注的实际干涉测量应用中特别有益。换句话说，具有较短相干长度的便宜的激光器可以用于在更长的DUT反射长度上实现非常高的干涉测量。该技术还能够使用这种便宜的激光器来测量商用级单模光纤中的瑞利散射。

4. 发明申请

US20080024785A1 HIGH RESOLUTION INTERFEROMETRIC OPTICAL FREQUENCY DOMAIN REFLECTOMETRY (OFDR) BEYOND THE LASER COHERENCE LENGTH 有权
标题翻译：高分辨率干涉光学频域反射光谱（OFDR）超越激光相干长度
公开(公告)号：US20080024785A1
公开(公告)日：2008-01-31
申请号：US11779527
申请日：2007-07-18
申请人： Mark Froggatt , Ryan Seeley , Dawn Gifford
发明人： Mark Froggatt , Ryan Seeley , Dawn Gifford
IPC分类号： G01B9/02
CPC分类号： G01M11/3172
摘要： The technology described here enables the use of an inexpensive laser to measure an interferometric response of an optical device under test (DUT) at reflection lengths significantly greater than the coherence length of the laser. This is particularly beneficial in practical interferometric applications where cost is a concern. In other words, inexpensive lasers having shorter coherence lengths may be used to achieve very high interferometric measurements at longer DUT reflection lengths. The technology also enables the use of such inexpensive lasers to measure Rayleigh scatter in commercial-grade, single-mode optical fiber.
摘要翻译：这里描述的技术使得能够使用廉价的激光器以显着大于激光器的相干长度的反射长度来测量被测光学器件（DUT）的干涉测量响应。这在成本是关注的实际干涉测量应用中特别有益。换句话说，具有较短相干长度的便宜的激光器可以用于在更长的DUT反射长度上实现非常高的干涉测量。该技术还能够使用这种便宜的激光器来测量商用级单模光纤中的瑞利散射。

5. 发明授权

US07633607B2 Method and apparatus for calibrating measurement equipment 有权
标题翻译：用于校准测量设备的方法和设备
公开(公告)号：US07633607B2
公开(公告)日：2009-12-15
申请号：US10570257
申请日：2004-09-01
申请人： Mark Froggatt
发明人： Mark Froggatt
IPC分类号： G01N21/00
CPC分类号： G01N21/274 , G01N21/21
摘要： Measurement equipment may be calibrated using two different calibration paths. An initial calibration is performed using a calibration path in which an optical element may be coupled for testing after the initial calibration. Once the initial calibration has been performed and the optical element operatively-connected in the main path for testing, one or more re-calibrations occur using another calibration path. The optical element being tested need not be de-coupled during the re-calibration. Each calibration operation produces error correction matrices which are used to correct the measurement matrix generated by the test equipment for the optical element being tested.
摘要翻译：可以使用两个不同的校准路径校准测量设备。使用其中可以耦合光学元件以在初始校准之后进行测试的校准路径来执行初始校准。一旦执行了初始校准，并且光学元件在主路径中可操作地连接用于测试，则使用另一个校准路径进行一次或多次重新校准。被测试的光学元件在重新校准期间不需要去耦合。每个校准操作产生误差校正矩阵，其用于校正由被测试的光学元件的测试设备产生的测量矩阵。

6. 发明申请

US20070171399A1 Method and apparatus for calibrating measurement equipment 有权
标题翻译：用于校准测量设备的方法和设备
公开(公告)号：US20070171399A1
公开(公告)日：2007-07-26
申请号：US10570257
申请日：2004-09-01
申请人： Mark Froggatt
发明人： Mark Froggatt
IPC分类号： G01N21/00
CPC分类号： G01N21/274 , G01N21/21
摘要： Measurement equipment may be calibrated using two different calibration paths. An initial calibration is performed using a calibration path in which an optical element may be coupled for testing after the initial calibration. Once the initial calibration has been performed and the optical element operatively-connected in the main path for testing, one or more re-calibrations occur using another calibration path. The optical element being tested need not be de-coupled during the re-calibration. Each calibration operation produces error correction matrices which are used to correct the measurement matrix generated by the test equipment for the optical element being tested.
摘要翻译：可以使用两个不同的校准路径校准测量设备。使用其中可以耦合光学元件以在初始校准之后进行测试的校准路径来执行初始校准。一旦执行了初始校准，并且光学元件在主路径中可操作地连接用于测试，则使用另一个校准路径进行一次或多次重新校准。被测试的光学元件在重新校准期间不需要去耦合。每个校准操作产生误差校正矩阵，其用于校正由被测试的光学元件的测试设备产生的测量矩阵。

7. 发明申请

US20070065077A1 Fiber Optic Position and Shape Sensing Device and Method Relating Thereto 有权
标题翻译：光纤位置和形状感应装置及其相关方法
公开(公告)号：US20070065077A1
公开(公告)日：2007-03-22
申请号：US11535438
申请日：2006-09-26
申请人： Brooks Childers , Dawn Gifford , Roger Duncan , Matthew Raum , Michael Vercellino , Mark Froggatt
发明人： Brooks Childers , Dawn Gifford , Roger Duncan , Matthew Raum , Michael Vercellino , Mark Froggatt
IPC分类号： G02B6/34
CPC分类号： G01D5/35303 , A61B1/00165 , A61B2034/2061 , G02B6/02042 , G02B6/022 , G02B6/34
摘要： The present invention is directed toward a fiber optic position and shape sensing device and the method of use. The device comprises an optical fiber means. The optical fiber means comprises either at least two single core optical fibers or a multicore optical fiber having at least two fiber cores. In either case, the fiber cores are spaced apart such that mode coupling between the fiber cores is minimized. An array of fiber Bragg gratings are disposed within each fiber core and a frequency domain reflectometer is positioned in an operable relationship to the optical fiber means. In use, the device is affixed to an object. Strain on the optical fiber is measured and the strain measurements correlated to local bend measurements. Local bend measurements are integrated to determine position and/or shape of the object.
摘要翻译：本发明涉及一种光纤位置和形状感测装置及其使用方法。该装置包括光纤装置。光纤装置包括至少两个单芯光纤或具有至少两个光纤芯的多芯光纤。在任一情况下，纤维芯间隔开，使得纤维芯之间的模式耦合最小化。光纤布拉格光栅阵列设置在每个光纤芯内，并且频域反射计位于与光纤装置可操作的关系中。在使用中，设备被固定在一个对象上。测量光纤上的应变，应变测量与局部弯曲测量相关。整合局部弯曲测量以确定物体的位置和/或形状。

8. 发明申请

US20060164627A1 Polarization diversity detection without a polarizing beam splitter 有权
标题翻译：偏振分束器的极化分集检测
公开(公告)号：US20060164627A1
公开(公告)日：2006-07-27
申请号：US10520819
申请日：2003-07-08
申请人： Mark Froggatt , Brian Soller , Matthew Wolfe
发明人： Mark Froggatt , Brian Soller , Matthew Wolfe
IPC分类号： G01N21/00
CPC分类号： G01M11/331 , G01M11/3172 , G01M11/3181 , G01M11/337
摘要： A fiber optic measurement device including an optical frequency domain reflectometer (10) performs polarization diversity detection without using a polarizing beam splitter.
摘要翻译：包括光频域反射计（10）的光纤测量装置在不使用偏振分束器的情况下进行极化分集检测。

9. 发明授权

US08004686B2 Compensating for time varying phase changes in interferometric measurements 有权
公开(公告)号：US08004686B2
公开(公告)日：2011-08-23
申请号：US11792082
申请日：2005-12-13
申请人： Mark Froggatt , Dawn K. Gifford
发明人： Mark Froggatt , Dawn K. Gifford
IPC分类号： G01B9/02
CPC分类号： G01M11/3172 , G01M11/083
摘要： An optical device under test (DUT) is interferometrically measured. The DUT can include one or more of an optical fiber, an optical component, or an optical system. First interference pattern data for the DUT is obtained for a first path to the DUT, and second interference pattern data for the DUT is obtained for a second somewhat longer path to the DUT. Because of that longer length, the second interference pattern data is delayed in time from the first interference pattern data. A time varying component of the DUT interference pattern data is then identified from the first and second interference pattern data. The identified time varying component is used to modify the first or the second interference pattern data to compensate for the time-varying phase caused by vibrations, etc. One or more optical characteristics of the DUT may then be determined based on the modified interference pattern data.

10. 发明授权

US07948633B2 Compensating for time varying phase changes in interferometric measurements 有权
标题翻译：补偿干涉测量中的时变相位变化
公开(公告)号：US07948633B2
公开(公告)日：2011-05-24
申请号：US12805879
申请日：2010-08-23
申请人： Mark Froggatt , Dawn K. Gifford
发明人： Mark Froggatt , Dawn K. Gifford
IPC分类号： G01B9/02
CPC分类号： G01M11/3172 , G01M11/083
摘要： An optical device under test (DUT) is interferometrically measured. The DUT can include one or more of an optical fiber, an optical component, or an optical system. First interference pattern data for the DUT is obtained for a first path to the DUT, and second interference pattern data for the DUT is obtained for a second somewhat longer path to the DUT. Because of that longer length, the second interference pattern data is delayed in time from the first interference pattern data. A time varying component of the DUT interference pattern data is then identified from the first and second interference pattern data. The identified time varying component is used to modify the first or the second interference pattern data to compensate for the time-varying phase caused by vibrations, etc. One or more optical characteristics of the DUT may then be determined based on the modified interference pattern data.
摘要翻译：对被测光学器件（DUT）进行干涉测量。 DUT可以包括光纤，光学部件或光学系统中的一个或多个。对于DUT的第一路径获得DUT的第一干涉图案数据，并且获得用于DUT的第二干涉图案数据用于到DUT的第二更长的路径。由于该长度较长，所以第二干涉图案数据在时间上与第一干涉图案数据相比延迟。然后从第一和第二干涉图案数据识别DUT干涉图案数据的时变分量。所识别的时变分量用于修改第一或第二干涉图案数据以补偿由振动等引起的时变相位。然后可以基于经修改的干涉图案数据来确定DUT的一个或多个光学特性。

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