Tube-encased fiber grating
    1.
    发明授权
    Tube-encased fiber grating 有权
    管状光纤光栅

    公开(公告)号:US06519388B1

    公开(公告)日:2003-02-11

    申请号:US09455865

    申请日:1999-12-06

    IPC分类号: G02B634

    CPC分类号: G02B6/022 G02B6/0218

    摘要: A tube-encased fiber grating includes an optical fiber 10 having at least one Bragg grating 12 impressed therein which is embedded within a glass capillary tube 20. Light 14 is incident on the grating 12 and light 16 is reflected at a reflection wavelength &lgr;1. The shape of the tube 20 may be other geometries (e.g., a “dogbone” shape) and/or more than one concentric tube may be used or more than one grating or pair of gratings may be used. The fiber 10 may be doped at least between a pair of gratings 150,152, encased in the tube 20 to form a tube-encased compression-tuned fiber laser or the grating 12 or gratings 150,152 may be constructed as a tunable DFB fiber laser encased in the tube 20. Also, the tube 20 may have an inner region 22 which is tapered away from the fiber 10 to provide strain relief for the fiber 10, or the tube 20 may have tapered (or fluted) sections 27 which have an outer geometry that decreases down to the fiber 10 and provides added fiber pull strength. Also, the tube-encased grating 12 exhibits lower mode coupling from the fiber core to the cladding modes due to the increased diameter of the cladding where the tube 20 is fused to the fiber 10 where the grating is located 12.

    摘要翻译: 管状光纤光栅包括光纤10,其具有嵌入其中的至少一个布拉格光栅12,该布拉格光栅12嵌入玻璃毛细管20内。光14入射到光栅12上,光16以反射波长lambd1反射。 管20的形状可以是其他几何形状(例如,“狗骨”形状)和/或可以使用多于一个的同心管,或者可以使用多于一个的光栅或一对光栅。 纤维10可以至少掺杂在一对光栅150,152之间,封装在管20中以形成管封装的压缩调谐光纤激光器,或者光栅12或光栅150,152可被构造为包含在该光纤12中的可调DFB光纤激光器。 管20也可以具有内部区域22,该内部区域22远离纤维10逐渐变细,以为纤维10提供应变消除,或者管20可以具有锥形(或凹槽)部分27,其具有外部几何形状 降低到纤维10并提供增加的纤维拉伸强度。 此外,由于包层的直径增加,管20被熔合到光栅位于12处的光纤10,管状光栅12表现出从纤维芯到包层模式的较低模式耦合。

    Fiber optic based method and system for determining and controlling position of a sliding sleeve valve
    2.
    发明授权
    Fiber optic based method and system for determining and controlling position of a sliding sleeve valve 失效
    用于确定和控制滑套阀位置的基于光纤的方法和系统

    公开(公告)号:US06995352B2

    公开(公告)日:2006-02-07

    申请号:US10339263

    申请日:2003-01-09

    IPC分类号: G01J1/04 G01J1/42 G01J5/08

    摘要: An apparatus and method for determining the position of a hydraulically actuated sliding sleeve valve in real time is disclosed. The apparatus comprises, in a preferred embodiment, a reference sensor and a position sensor, both of which constitute fiber optic windings wound around the hydraulic fluid cavity used to activate the sleeve. The sensors measure the pressure exerted by the hydraulic fluid in the cavity, with the reference sensor circumferentially lengthening to create an optical time delay indicative of the base line pressure of the hydraulic fluid. As the sleeve moves, the position sensor becomes increasingly exposed to the hydraulic fluid pressure and also begins to experience a time delay, which can be compared to the reference sensor's time delay to determine sleeve position.

    摘要翻译: 公开了一种实时确定液压致动滑套阀的位置的装置和方法。 在优选实施例中,该装置包括参考传感器和位置传感器,两者都构成缠绕在用于激活套筒的液压流体腔周围的光纤绕组。 传感器测量由液压流体在空腔中施加的压力,参考传感器周向延长以产生指示液压流体的基线压力的光学时间延迟。 当套筒移动时,位置传感器变得越来越多地暴露于液压流体压力并且也开始经历时间延迟,这可以与参考传感器的时间延迟进行比较以确定套筒位置。

    Sports Training Apparatus
    5.
    发明申请
    Sports Training Apparatus 审中-公开
    体育训练器材

    公开(公告)号:US20150196828A1

    公开(公告)日:2015-07-16

    申请号:US14595953

    申请日:2015-01-13

    申请人: Peter Ogle

    发明人: Peter Ogle

    IPC分类号: A63B71/06 A63B71/02

    摘要: A sports training apparatus for training athletes to deliver a ball or other object at an appropriate arc. The sports training apparatus includes an adjustable horizontal target that is positioned between the athlete and the target. It gives guidance to the athlete at the time of release. The athlete's height, game being played, desired arc, technique employed and position on the court determine the appropriate configuration, placement, and use of the sports training apparatus described herein. Athletes use the sports training apparatus repeatedly to train, learn, and be able to repeat the desired arc for a particular shot in their sport.

    摘要翻译: 一种用于训练运动员以适当弧度输送球或其他物体的运动训练装置。 运动训练装置包括位于运动员和目标之间的可调节水平目标。 在发布时给予运动员指导。 运动员的身高,正在玩的游戏,想要的弧度,技术使用和在场上的位置确定本文描述的运动训练装置的适当配置,放置和使用。 运动员多次使用体育训练器材来训练,学习,并且能够在运动中重复一个特定镜头所需的弧度。