公开(公告)号：US20200141719A1

公开(公告)日：2020-05-07

申请号：US16723824

申请日：2019-12-20

Applicant: Intuitive Surgical Operations, Inc.

Inventor： Mark E. Froggatt ,  Justin W. Klein ,  Dawn K. Gifford ,  Stephen T. Kreger

IPC: G01B11/24 ,  G01B11/16 ,  G01L1/24 ,  G01M11/00

Abstract: A multi-core fiber includes multiple optical cores, and for each different core of a set of different cores of the multiple optical cores, a total change in optical length is detected. The total change in optical length represents an accumulation of all changes in optical length for multiple segments of that different core up to a point on the multi-core fiber. A difference is determined between the total changes in optical length for cores of the set of different cores. A twist parameter and/or a bend angle associated with the multi-core fiber at the point on the multi-core fiber is/are determined based on the difference.

公开(公告)号：US10378885B2

公开(公告)日：2019-08-13

申请号：US15698707

申请日：2017-09-08

Applicant: Intuitive Surgical Operations, Inc.

Inventor： Mark E. Froggatt ,  Justin W. Klein ,  Dawn K. Gifford ,  Stephen Tod Kreger

IPC: G01L1/24 ,  G02B6/02 ,  G01B11/16 ,  G01B11/24

Abstract: A multi-core fiber includes multiple optical cores, and for each different core of a set of different cores of the multiple optical cores, a total change in optical length is detected. The total change in optical length represents an accumulation of all changes in optical length for multiple segments of that different core up to a point on the multi-core fiber. A difference is determined between the total changes in optical length for cores of the set of different cores. A twist parameter and/or a bend angle associated with the multi-core fiber at the point on the multi-core fiber is/are determined based on the difference.

公开(公告)号：US20140336973A1

公开(公告)日：2014-11-13

申请号：US14362759

申请日：2012-12-03

Applicant: INTUITIVE SURGICAL OPERATIONS, INC.

Inventor： Mark E. Froggatt ,  Alexander K. Sang ,  Dawn K. Gifford ,  Justin W. Klein

IPC: G01B9/02 ,  G01L1/24 ,  G01D5/353

CPC classification number: G01B9/0207 ,  G01B9/02004 ,  G01B9/02069 ,  G01B9/02072 ,  G01B9/02076 ,  G01B9/02083 ,  G01B9/0209 ,  G01B11/0658 ,  G01B11/18 ,  G01D5/3537 ,  G01L1/242 ,  G01M11/3172

Abstract: An optical interrogation system, e.g., an OFDR-based system, measures local changes, of index of refraction of a sensing light guide subjected to a time-varying disturbance. Interferometric measurement signals detected for a length of the sensing light guide are transformed into the spectral domain. A time varying signal is determined from the transformed interferometric measurement data set. A compensating signal is determined from the time varying signal which is used to compensate the interferometric measurement data set for the time-varying disturbance. Further robustness is achieved using averaging and strain compensation. The compensation technique may be applied along the length of the light guide.

Abstract translation: 光学询问系统，例如基于OFDR的系统，测量受到时变干扰的感测光导的折射率的局部变化。 在感测光导的长度上检测到的干涉测量信号被转换成光谱域。 从变换的干涉测量数据集确定时变信号。 根据用于补偿时变干扰的干涉测量数据集的时变信号来确定补偿信号。 使用平均和应变补偿实现了更强的鲁棒性。 可以沿着光导的长度施加补偿技术。