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1. 发明申请

US20110109898A1 OPTICAL POSITION AND/OR SHAPE SENSING 有权
标题翻译：光学位置和/或形状感应
公开(公告)号：US20110109898A1
公开(公告)日：2011-05-12
申请号：US12874901
申请日：2010-09-02
申请人： Mark E. FROGGATT , Justin W. KLEIN , Dawn K. GIFFORD , Stephen Tod KREGER
发明人： Mark E. FROGGATT , Justin W. KLEIN , Dawn K. GIFFORD , Stephen Tod KREGER
IPC分类号： G01N21/84
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芯光纤上的点之间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。该测定的精确度优于多核纤维的光学长度的0.5％直到多芯纤维上的点。在优选示例实施例中，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。

2. 发明申请

US20110317148A1 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考测量的扩展参考
公开(公告)号：US20110317148A1
公开(公告)日：2011-12-29
申请号：US13149206
申请日：2011-05-31
申请人： Mark E. FROGGATT , Justin W. KLEIN , Dawn K. GIFFORD , Matthew REAVES , Joseph J. BOS , Alexander K. SANG
发明人： Mark E. FROGGATT , Justin W. KLEIN , Dawn K. GIFFORD , Matthew REAVES , Joseph J. BOS , Alexander K. SANG
IPC分类号： G01L1/24 , G01B9/02
CPC分类号： G01B11/161 , G01D5/35316 , G01D5/35361 , G01L1/242
摘要： An interferometric measurement system measures a parameter using at least one optical waveguide. A memory stores reference interferometric pattern data associated with a segment of the optical waveguide. Interferometric detection circuitry detects and stores measurement interferometric pattern data associated with the segment of the optical waveguide during a measurement operation. A spectral range of the reference interferometric pattern of the optical waveguide is greater than a spectral range of the measurement interferometric pattern of the optical waveguide. A processor shifts one or both of the measurement interferometric pattern data and the reference interferometric pattern data relative to the other to obtain a match and to use the match to measure the parameter. An example parameter is strain.
摘要翻译：干涉测量系统使用至少一个光波导测量参数。存储器存储与光波导的段相关联的参考干涉图案数据。干涉测量电路在测量操作期间检测和存储与光波导段相关联的测量干涉图案数据。光波导的参考干涉图案的光谱范围大于光波导的测量干涉图案的光谱范围。处理器相对于另一个处理器移动测量干涉图案数据和参考干涉图案数据中的一个或两个以获得匹配并且使用该匹配来测量该参数。示例参数是应变。

3. 发明申请

US20120069347A1 COMPENSATING FOR NON-IDEAL MULTI-CORE OPTICAL FIBER STRUCTURE 有权
标题翻译：对非理想多芯光纤结构的补偿
公开(公告)号：US20120069347A1
公开(公告)日：2012-03-22
申请号：US13233577
申请日：2011-09-15
申请人： Justin W. KLEIN , Mark E. FROGGATT , Stephen T. KREGER , Dawn K. GIFFORD , Sandra M. KLUTE
发明人： Justin W. KLEIN , Mark E. FROGGATT , Stephen T. KREGER , Dawn K. GIFFORD , Sandra M. KLUTE
IPC分类号： G01B9/02
CPC分类号： G01B11/161 , G01B9/02023 , G01B11/18 , G01B21/042 , G01B21/045 , G02B6/02042
摘要： An interferometric measurement system includes a spun optical fiber including multiple optical waveguides configured in the fiber. Interferometric detection circuitry detects measurement interferometric pattern data associated with each of the multiple optical waveguides when the optical fiber is placed into a bend. Data processing circuitry determines compensation parameters that compensate for variations between an optimal configuration of the multiple optical waveguides in the fiber and an actual configuration of multiple optical waveguides in the fiber. The compensation parameters are stored in memory for compensating subsequently-obtained measurement interferometric pattern data for the fiber. The compensation parameters are applied to the subsequently-obtained measurement interferometric pattern data in order to distinguish between axial strain, bend strain, and twist strain on the fiber and to accurately determine one or more strain values for the fiber corresponding to one or more of the axial strain, bend strain, or twist strain on the fiber.
摘要翻译：干涉测量系统包括在光纤中配置的包括多个光波导的纺丝光纤。当光纤放入弯曲部时，干涉测量电路检测与多个光波导中的每一个相关联的测量干涉图案数据。数据处理电路确定补偿参数，其补偿光纤中多个光波导的最佳配置与光纤中多个光波导的实际配置之间的变化。补偿参数存储在存储器中，用于补偿随后获得的用于光纤的测量干涉图案数据。将补偿参数应用于随后获得的测量干涉图案数据，以便区分光纤上的轴向应变，弯曲应变和扭曲应变，并且准确地确定对应于一个或多个的纤维的纤维的一个或多个应变值轴向应变，弯曲应变或纤维上的扭曲应变。

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