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31 条记录 (耗时 0.016 秒)

    Fabrication of miniature fiber-optic temperature sensors
    3.
    发明授权
    Fabrication of miniature fiber-optic temperature sensors 有权
    微型光纤温度传感器的制造

    公开(公告)号：US07762720B1

    公开(公告)日：2010-07-27

    申请号：US11835835

    申请日：2007-08-08

    申请人： Yizheng Zhu ,  Anbo Wang

    发明人： Yizheng Zhu ,  Anbo Wang

    IPC分类号： G01J5/00 ,  G01K11/00

    CPC分类号： G01J5/08 ,  G01J5/0821 ,  G01K11/3206 ,  G02B6/2551

    摘要： A method of coupling a silica fiber and a sapphire fiber includes providing a silica fiber having a doped core and a cladding layer, with the doped core having a prescribed diameter, providing a sapphire fiber having a diameter less than the doped core, placing an end of the sapphire fiber in close proximity to an end of the silica fiber, applying a heat source to the end of silica fiber and introducing the end of sapphire fiber into the heated doped core of the silica fiber to produce a coupling between the silica and sapphire fibers.

    摘要翻译： 耦合二氧化硅纤维和蓝宝石纤维的方法包括提供具有掺杂芯和包覆层的二氧化硅纤维，掺杂芯具有规定的直径，提供直径小于掺杂芯的蓝宝石纤维， 的蓝宝石纤维靠近二氧化硅纤维的端部，将热源施加到二氧化硅纤维的末端，并将蓝宝石纤维的末端引入二氧化硅纤维的加热掺杂芯中，以产生二氧化硅和蓝宝石之间的耦合 纤维。

    Q-point stabilization for linear interferometric sensors using tunable diffraction grating
    6.
    发明申请
    Q-point stabilization for linear interferometric sensors using tunable diffraction grating 审中-公开
    使用可调谐衍射光栅的线性干涉测量传感器的Q点稳定

    公开(公告)号：US20050231728A1

    公开(公告)日：2005-10-20

    申请号：US10824600

    申请日：2004-04-15

    申请人： Anbo Wang ,  Bing Yu

    发明人： Anbo Wang ,  Bing Yu

    IPC分类号： G01B9/02

    CPC分类号： G01B9/02067 ,  G01B9/02007 ,  G01B9/02023 ,  G01B9/02041 ,  G01B2290/25

    摘要： A linear interferometric sensor system in which the light output from the interferometric sensor is optically bandpass filtered before conversion to an electrical signal by an adjustable diffraction grating and the center wavelength of the adjustable diffraction grating is controlled by a feedback circuit responsive to the steady state component of the electrical signal corresponding to the filtered sensor return. The adjustable may comprise a diffraction grating a diffraction grating mounted on a motor driven rotary stage. The invention is particularly useful in self calibrating interferometric/intensity-based sensor configuration, but is also applicable in a wide variety of linear interferometric sensor configurations.

    摘要翻译： 线性干涉测量传感器系统，其中来自干涉测量传感器的光输出在通过可调节衍射光栅转换成电信号之前被光学带通滤波，并且可调节衍射光栅的中心波长由响应于稳态分量的反馈电路控制 的电信号对应于滤波的传感器返回。 可调节的可以包括衍射光栅，其安装在电机驱动的旋转台上的衍射光栅。 本发明在自校准基于干涉/强度的传感器配置中特别有用，但也适用于各种各样的线性干涉测量传感器配置。

    Optical fiber pressure and acceleration sensor fabricated on a fiber endface
    7.
    发明申请
    Optical fiber pressure and acceleration sensor fabricated on a fiber endface 有权
    在光纤端面上制造的光纤压力和加速度传感器

    公开(公告)号：US20050062979A1

    公开(公告)日：2005-03-24

    申请号：US10911635

    申请日：2004-08-05

    申请人： Yizheng Zhu ,  Xingwei Wang ,  Juncheng Xu ,  Anbo Wang

    发明人： Yizheng Zhu ,  Xingwei Wang ,  Juncheng Xu ,  Anbo Wang

    IPC分类号： G01B20060101 ,  G01B9/02 ,  G01H9/00 ,  G01L9/00 ,  G01P15/093

    CPC分类号： G01L9/0079 ,  G01B9/02023 ,  G01B2290/25 ,  G01H9/004 ,  G01P15/093

    摘要： A fiber optic sensor has a hollow tube bonded to the endface of an optical fiber, and a diaphragm bonded to the hollow tube. The fiber endface and diaphragm comprise an etalon cavity. The length of the etalon cavity changes when applied pressure or acceleration flexes the diaphragm. The entire structure can be made of fused silica. The fiber, tube, and diaphragm can be bonded with a fusion splice. The present sensor is particularly well suited for measuring pressure or acceleration in high temperature, high pressure and corrosive environments (e.g., oil well downholes and jet engines). The present sensors are also suitable for use in biological and medical applications.

    摘要翻译： 光纤传感器具有结合到光纤端面的中空管，以及结合到中空管的隔膜。 纤维端面和隔膜包括标准具腔。 当施加压力或加速度弯曲隔膜时，标准具腔的长度会发生变化。 整个结构可以由熔融石英制成。 纤维，管和隔膜可以用熔接粘合。 本传感器特别适用于在高温，高压和腐蚀性环境（例如油井下井和喷气发动机）中测量压力或加速度。 本传感器也适用于生物和医学应用。

    Method and apparatus for distributed sensing
    8.
    发明授权
    Method and apparatus for distributed sensing 有权

    公开(公告)号：US11002594B2

    公开(公告)日：2021-05-11

    申请号：US15776246

    申请日：2016-11-18

    申请人： SENTEK Instrument, LLC ,  Lingmei Ma ,  Bo Dong ,  Anbo Wang

    发明人： Lingmei Ma ,  Bo Dong ,  Anbo Wang

    IPC分类号： G01H9/00 ,  G01D5/353 ,  G02B26/04

    摘要： Forming a light pulse having a plurality of time-dependent frequency components such as a chirped light pulse or a light pulse group and superposing reflected light from different portions of an optical fiber allows detection of changes in effective optical path differences due to physical parameters in the environment of the optical fiber by sensing the optical interference pattern of each light frequency and wavelength. The development of a plurality of interference patterns from each light pulse provides sufficient information for robust demodulation by known methods to produce signals having good fidelity to variations in the physical parameters of interest, particularly vibrations and acoustic waves. The location of the measured physical parameter along the optical fiber can be determined from the time difference between injecting the light pulse and detection of a reflection or Rayleigh backscattering and diffraction index of the optical fiber.