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    Temperature compensated optical device
    1.
    发明授权
    Temperature compensated optical device 有权
    温度补偿光学器件

    公开(公告)号：US06621957B1

    公开(公告)日：2003-09-16

    申请号：US09699940

    申请日：2000-10-30

    申请人： James M. Sullivan ,  Timothy J. Bailey ,  Robert N. Brucato ,  Thomas W. Engel ,  Mark R. Fernald ,  Richard T. Jones ,  Alan D. Kersey ,  Trevor MacDougall ,  Matthew B. Miller ,  Martin A. Putnam ,  Paul E. Sanders ,  James S. Sirkis

    发明人： James M. Sullivan ,  Timothy J. Bailey ,  Robert N. Brucato ,  Thomas W. Engel ,  Mark R. Fernald ,  Richard T. Jones ,  Alan D. Kersey ,  Trevor MacDougall ,  Matthew B. Miller ,  Martin A. Putnam ,  Paul E. Sanders ,  James S. Sirkis

    IPC分类号： G02B634

    CPC分类号： G02F1/0115 ,  G02B6/0218 ,  H01S3/0675 ,  H01S3/1028

    摘要： A temperature compensated optical device includes a compression-tuned glass element 10 having a Bragg grating 12 therein, a compensating material spacer 26 and an end cap 28 all held within an outer shell 30. The element 10, end cap 28 and shell 30 are made of a material having a low coefficient of thermal expansion (CTE), e.g., silica, quartz, etc. and the spacer 26 is made of a material having a higher CTE, e.g., metal, Pyrex®, ceramic, etc. The material and length L5 of the spacer 26 is selected to offset the upward grating wavelength shift due to temperature. As temperature rises, the spacer 26 expands faster than the silica structure causing a compressive strain to be exerted on the element 10, which shifts the wavelength of the grating 12 down to balance the intrinsic temperature induces wavelength shift up. As a result, the grating 12 wavelength is substantially unchanged over a wide temperature range. The element 10 includes either an optical fiber having at least one Bragg grating 12 impressed therein encased within and fused to at least a portion of a glass capillary tube or a large diameter waveguide (or cane) with a grating 12 having a core 11 and a wide cladding, which does not buckle over a large range of compressive axial strains. The element may have a “dogbone” shape to amplify compressive strain on the grating 12. The device 8 may also be placed in an axially tunable system that allows the wavelength to be dynamically tuned while remaining athermal. In addition to a grating, the device may be an athermal laser, DFB laser, etc. Also, the entire device 8 may be all made of monolithic glass materials.

    摘要翻译： 温度补偿光学器件包括其中具有布拉格光栅12的压缩调谐玻璃元件10，补偿材料间隔件26和端盖28，所述补偿材料间隔件26和端盖28都保持在外壳30内。元件10，端帽28和壳体30被制成 具有低热膨胀系数（CTE）的材料，例如二氧化硅，石英等，并且间隔物26由具有较高CTE（例如金属，Pyrex，陶瓷等）的材料制成。 选择间隔件26的材料和长度L5以抵消由于温度引起的向上光栅波长偏移。 随着温度升高，间隔件26比二氧化硅结构膨胀得更快，导致施加在元件10上的压缩应变，其将光栅12的波长向下移动以平衡本征温度，从而引起波长向上移动。 结果，光栅12的波长在宽温度范围内基本上不变。 元件10包括具有至少一个布拉格光栅12的光纤，该光纤封装在玻璃毛细管或大直径波导（或甘蔗）的至少一部分内并与其融合，其中光栅12具有芯11和 宽的包层，其在大范围的压缩轴向应变下不扣合。 元件可以具有“狗骨”形状以放大光栅12上的压缩应变。器件8也可以放置在轴向可调谐系统中，其允许波长被动态调谐而保持不耐热。 除了光栅之外，该器件可以是无热激光器，DFB激光器等。此外，整个器件8可以全部由单片玻璃材料制成。

    Pressure-isolated bragg grating temperature sensor
    3.
    发明授权
    Pressure-isolated bragg grating temperature sensor 有权
    压力隔离布拉格光栅温度传感器

    公开(公告)号：US06813013B2

    公开(公告)日：2004-11-02

    申请号：US10193876

    申请日：2002-07-12

    申请人： Mark R. Fernald ,  Timothy J. Bailey ,  Matthew B. Miller ,  James M. Sullivan ,  Richard T. Jones ,  Christopher J. Wright ,  Alan D. Kersey ,  Martin A. Putnam ,  Robert N. Brucato ,  Paul E. Sanders

    发明人： Mark R. Fernald ,  Timothy J. Bailey ,  Matthew B. Miller ,  James M. Sullivan ,  Richard T. Jones ,  Christopher J. Wright ,  Alan D. Kersey ,  Martin A. Putnam ,  Robert N. Brucato ,  Paul E. Sanders

    IPC分类号： G01N2100

    CPC分类号： G01K11/3206 ,  G01D5/35316 ,  G01K5/52

    摘要： A pressure-isolated Bragg grating temperature sensor includes an optical element, which includes an optical fiber having at least one Bragg grating disposed therein. The Bragg grating is encased within and fused to at least a portion of an inner glass capillary tube, or comprises a large diameter waveguide grating having a core and a wide cladding and having the grating disposed therein, encased within an outer tube to form a chamber. An extended portion of the sensing element that has the grating therein extends inwardly into the chamber, which allows the grating to sense temperature changes but isolates the grating from external pressure. More than one grating or pair of gratings may be used and more than one fiber or optical core may be used. At least a portion of the sensing element may be doped between a pair of gratings to form a temperature tuned laser, or the grating or gratings may be configured as a tunable DFB laser disposed in the sensing element.

    摘要翻译： 压力隔离布拉格光栅温度传感器包括光学元件，其包括其中布置有至少一个布拉格光栅的光纤。 布拉格光栅被封装在内玻璃毛细管的至少一部分中并且熔合到内玻璃毛细管的至少一部分中，或包括具有芯和宽包层并且具有设置在其中的光栅的大直径波导光栅，该光栅包围在外管内以形成室 。 其中具有光栅的感测元件的延伸部分向内延伸到腔室中，这允许光栅感测温度变化，但是将光栅与外部压力隔离。 可以使用多于一个的光栅或一对光栅，并且可以使用多于一个的光纤或光纤。 感测元件的至少一部分可以掺杂在一对光栅之间以形成温度调节的激光器，或者光栅或光栅可被配置为设置在感测元件中的可调DFB激光器。

    Pressure-isolated bragg grating temperature sensor
    4.
    发明授权
    Pressure-isolated bragg grating temperature sensor 有权
    压力隔离布拉格光栅温度传感器

    公开(公告)号：US06452667B1

    公开(公告)日：2002-09-17

    申请号：US09456113

    申请日：1999-12-06

    申请人： Mark R. Fernald ,  Timothy J. Bailey ,  Matthew B. Miller ,  James M. Sullivan ,  Richard T. Jones ,  Christopher J. Wright ,  Alan D. Kersey ,  Martin A. Putnam ,  Robert N. Brucato ,  Paul E. Sanders

    发明人： Mark R. Fernald ,  Timothy J. Bailey ,  Matthew B. Miller ,  James M. Sullivan ,  Richard T. Jones ,  Christopher J. Wright ,  Alan D. Kersey ,  Martin A. Putnam ,  Robert N. Brucato ,  Paul E. Sanders

    IPC分类号： G01N2100

    CPC分类号： G01K11/3206 ,  G01D5/35316 ,  G01K5/52

    摘要： A pressure-isolated Bragg grating temperature sensor includes an optical element which includes an optical fiber having at least one Bragg grating disposed therein. The Bragg grating is encased within and fused to at least a portion of an inner glass capillary tube, or comprises a large diameter waveguide grating having a core and a wide cladding and having the grating disposed therein, encased within an outer tube to form a chamber. An extended portion of the sensing element that has the grating therein extends inwardly into the chamber which allows the grating to sense temperature changes but isolates the grating from external pressure. More than one grating or pair of gratings may be used and more than one fiber or optical core may be used. At least a portion of the sensing element may be doped between a pair of gratings to form a temperature tuned laser, or the grating or gratings may be configured as a tunable DFB laser disposed in the sensing element.

    摘要翻译： 压力隔离布拉格光栅温度传感器包括光学元件，该光学元件包括其中布置有至少一个布拉格光栅的光纤。 布拉格光栅被封装在内玻璃毛细管的至少一部分中并且熔合到内玻璃毛细管的至少一部分中，或包括具有芯和宽包层并且具有设置在其中的光栅的大直径波导光栅，该光栅包围在外管内以形成室 。 具有光栅的感测元件的延伸部分向内延伸到腔室中，允许光栅感测温度变化，但是将光栅与外部压力隔离。 可以使用多于一个的光栅或一对光栅，并且可以使用多于一个的光纤或光纤。 感测元件的至少一部分可以掺杂在一对光栅之间以形成温度调节的激光器，或者光栅或光栅可被配置为设置在感测元件中的可调DFB激光器。

    FLOW METER USING SENSITIVE DIFFERENTIAL PRESSURE MEASUREMENT
    9.
    发明申请
    FLOW METER USING SENSITIVE DIFFERENTIAL PRESSURE MEASUREMENT 审中-公开
    流量计使用敏感差分压力测量

    公开(公告)号：US20080264182A1

    公开(公告)日：2008-10-30

    申请号：US12169885

    申请日：2008-07-09

    申请人： Richard T. Jones ,  Matthew J. Patterson

    发明人： Richard T. Jones ,  Matthew J. Patterson

    IPC分类号： G01F1/44

    CPC分类号： G01F1/44 ,  G01F1/34 ,  G01F1/363

    摘要： Methods and apparatus for measuring the flow rate of a fluid within tubing utilize probes to measure a differential pressure of the fluid along a section of the tubing. Various calculations utilize this pressure differential to determine the flow rate of the fluid. For example, determining the flow rate for the fluid may include calculating the flow rate utilizing the differential pressure measured within an equation related to at least one of friction loss through the tubing, elevation head loss through the tubing, and/or head loss through the tubing due to a change in direction of fluid flow through the tubing.

    摘要翻译： 用于测量管内流体的流速的方法和装置利用探针来测量流体沿管道的一段压差。 各种计算利用该压力差来确定流体的流速。 例如，确定流体的流速可以包括使用在与通过管道的摩擦损失，通过管道的升高头部损失和/或通过管道的头部损失中的至少一种相关的方程式中测量的压差来计算流量， 由于流体通过管道的流动方向发生变化，管道由管道引起。

    Apparatus for protecting sensors within a well environment
    10.
    发明授权
    Apparatus for protecting sensors within a well environment 有权
    用于在井环境内保护传感器的装置

    公开(公告)号：US06443226B1

    公开(公告)日：2002-09-03

    申请号：US09740757

    申请日：2000-11-29

    申请人： James M. Diener ,  Richard T. Jones

    发明人： James M. Diener ,  Richard T. Jones

    IPC分类号： E21B1710

    CPC分类号： E21B47/011

    摘要： An apparatus for protecting sensing devices disposed on an outer surface of a pipe is provided. The apparatus includes a housing and a plurality of bumpers. The housing is attached to the outer surface of the pipe. The bumpers are attached to one of the outer surface of the pipe or the housing. Each bumper includes a post and a bumper pad. The bumpers are enclosed within the region formed between the housing and the pipe.

    摘要翻译： 提供一种用于保护设置在管的外表面上的感测装置的装置。 该装置包括壳体和多个缓冲器。 壳体附接到管道的外表面。 保险杠连接到管道或外壳的外表面之一。 每个保险杠包括一个柱子和一个保险杠垫。 保险杠被封闭在壳体和管道之间形成的区域内。