Extended, flexible, spatially weighted fiber optic interferometric
hydrophone
    1.
    发明授权
    Extended, flexible, spatially weighted fiber optic interferometric hydrophone 失效
    扩展,灵活,空间加权的光纤干涉水听器

    公开(公告)号:US5737278A

    公开(公告)日:1998-04-07

    申请号:US664871

    申请日:1996-06-17

    IPC分类号: G01H9/00 H04R23/00

    CPC分类号: G01H9/004

    摘要: A fiber optic hydrophone is formed as a single interferometer having widely separated interferometer segments formed in each of a pair of optical fibers. The interferometer segments are designed to allow averaging of the effects of local noise sources over a broad area in order to increase the acoustic signal-to-noise ratio. The interferometer segments also allow deployment of the hydrophone around sharp bends. A first optical fiber is formed into a plurality of spatially separated outer coils. A second optical fiber is formed into a plurality of inner coils corresponding to the outer coils. The inner and outer coils are preferably arranged in concentric pairs to form a plurality of sensor segments. A plurality of spacers is arranged such that a spacer is between successive sensor segments. The spacers are formed to guide the outer and inner optical fibers between successive sensor segments such that changes in the physical parameter between the sensor segments produce no phase difference between optical signals guided by the outer and inner fibers. The outer and inner coils are preferably arranged for exposure to the parameter such that changes in the parameter at each sensor segment produce opposite phase changes between the optical signals in the outer coils and the corresponding outer coil.

    摘要翻译: 光纤水听器形成为具有形成在一对光纤中的每一个中的具有广泛分离的干涉仪段的单个干涉仪。 干涉仪段被设计成允许对广泛区域的局部噪声源的影响进行平均,以增加声信噪比。 干涉仪段还允许在锋利的弯曲处部署水听器。 第一光纤被形成为多个空间分离的外部线圈。 第二光纤被形成为对应于外部线圈的多个内部线圈。 内部和外部线圈优选地以同心对布置以形成多个传感器段。 多个间隔件被布置成使得间隔件在连续的传感器段之间。 间隔件被形成以在连续的传感器段之间引导外光纤和内光纤,使得传感器段之间的物理参数的变化在由外光纤和内光纤引导的光信号之间不产生相位差。 外线圈和内线圈优选布置成暴露于参数,使得每个传感器段上的参数的改变在外线圈中的光信号和相应的外线圈之间产生相反的相位变化。

    Multichannel fiber optic connector
    2.
    发明授权
    Multichannel fiber optic connector 失效
    多通道光纤连接器

    公开(公告)号:US5590229A

    公开(公告)日:1996-12-31

    申请号:US231385

    申请日:1994-04-22

    IPC分类号: G02B6/38 G02B6/40

    摘要: A connector for making and securing low loss optical contact between a first plurality of optical fibers, each including a ferrule-encapsulated terminal end, and a second plurality of optical fibers, each also including a ferrule-encapsulated terminal end. Each of the ferrules is individually fixed to a cap that includes an asymmetrical keying member. Male and female connector members include internal channels for accepting ferrule-fixed cups with predetermined angular orientations. Springs are axially aligned within the channels for independently urging each cup-fixed ferrule into optical contact with a mating ferrule. In this way, multiple rotational and axial alignments are simultaneously and independently achieved and maintained between mated pairs of optical fibers.

    摘要翻译: 一种用于制造和确保第一组多个光纤之间的低损耗光学接触的连接器,每个光纤包括套圈封装的端子,以及第二多个光纤,每个光纤还包括套圈封装的端子。 每个套圈单独地固定到包括不对称的键合构件的帽。 公和母连接器构件包括用于接收具有预定角度取向的套圈固定杯的内部通道。 弹簧在通道内轴向对准,用于独立地推动每个杯固定套圈与配合的套圈光学接触。 以这种方式,多个旋转和轴向对准在配对的光纤对之间同时且独立地实现和维持。

    Faraday rotator assembly
    3.
    发明授权
    Faraday rotator assembly 失效
    法拉第旋转器总成

    公开(公告)号:US4960331A

    公开(公告)日:1990-10-02

    申请号:US279354

    申请日:1988-12-02

    IPC分类号: G01C19/66

    CPC分类号: G01C19/667

    摘要: Disclosed herein in a side mounted aperture and a Faraday rotator assembly useful in conjunction with an out-of-plane multi-oscillator ring laser gyroscope. The aperture and Faraday rotator assemblies contain components which are optically contacted to one another as well as the ring laser gyroscope frame. The assemblies disclosed herein provide a simplified construction designed to fixture the Faraday rotator element in order to minimize handling and facilitate alignment to the ring laser gyroscope cavity, free from contamination and in proper alignment for optimum use of the Faraday rotator component and aperture needed for proper operation of an out-of-plane multi-oscillator ring laser gyroscope.

    摘要翻译: 本文公开在侧面安装孔和法拉第旋转器组件中,该组合可用于与平面外的多振荡环形激光陀螺仪相结合。 孔径和法拉第转子组件包含彼此光学接触的部件以及环形激光陀螺仪框架。 本文公开的组件提供了一种简化的结构,其设计用于固定法拉第转子元件,以便最小化处理并便于与环形激光陀螺仪腔相对准,无污染和适当对准,以便最佳地使用法拉第转子组件和正确所需的孔 一个平面外的多振荡环形激光陀螺仪的操作。

    Incremental automata verification
    5.
    发明授权
    Incremental automata verification 失效
    增量自动机验证

    公开(公告)号:US06957178B2

    公开(公告)日:2005-10-18

    申请号:US10015058

    申请日:2001-10-29

    IPC分类号: G06F17/50

    CPC分类号: G06F17/504

    摘要: Methods and apparatus for performing formal verification of a system defined by a set of automata are useful in facilitating computing efficiencies during the verification of an incremental system design. The various embodiments permit computing efficiencies by saving information generated during a verification of the system for use in subsequent verification runs. The saved information includes calculation results pertaining to instances or elements of the system that do not require modification for the next subsequent verification.

    摘要翻译: 用于执行由一组自动机定义的系统的形式验证的方法和装置在促进增量系统设计的验证期间的计算效率方面是有用的。 各种实施例通过保存在系统的验证期间生成的信息来允许计算效率,以用于后续验证运行。 保存的信息包括与不需要修改以进行后续验证的系统的实例或元素相关的计算结果。