Optical fiber bragg grating coating removal detection
    1.
    发明申请
    Optical fiber bragg grating coating removal detection 失效
    光纤布拉格光栅涂层去除检测

    公开(公告)号:US20050018945A1

    公开(公告)日:2005-01-27

    申请号:US10894153

    申请日:2004-07-19

    Abstract: An optical corrosion sensor employs an optical fiber Bragg grating 20 embedded within an optical fiber 18. The grating 20 has a coating 40 made of a material, such as aluminum, which corrodes or can otherwise be removed. The coating 40 exerts forces 46 radially inward around and along the grating 20 so as to cause the wavelength bandwidth of the grating reflectivity profile to become broader and to be shifted relative to its uncoated condition. Also, the forces on the grating 20 are reduced when the coating corrodes, thereby causing the wavelength bandwidth and shift of the reflectivity profile of the grating to narrow and to return to its uncoated condition.

    Abstract translation: 光学腐蚀传感器采用嵌入在光纤18内的光纤布拉格光栅20.光栅20具有由诸如铝的材料制成的涂层40,其被腐蚀或以其它方式被去除。 涂层40在光栅20周围沿径向向内施加力46,以使光栅反射率分布的波长带宽变得更宽并相对于其未涂覆的状态移动。 此外,当涂层腐蚀时,光栅20上的力减小,从而导致光栅的波长带宽和反射率分布的偏移变窄并返回到其未涂覆状态。

    Pressure transducer with optical waveguide feedthrough assembly
    2.
    发明申请
    Pressure transducer with optical waveguide feedthrough assembly 有权
    带光波导馈通组件的压力传感器

    公开(公告)号:US20070003207A1

    公开(公告)日:2007-01-04

    申请号:US11172617

    申请日:2005-06-30

    CPC classification number: G01L1/246 G01L11/02 G01L11/025 G02B6/4248

    Abstract: Optical sensors used in harsh environments require a sealed pressure tight passage of an optical waveguide into an interior of the sensor. In one embodiment, a pressure sensor assembly for determining the pressure of a fluid in a harsh environment includes a sensing element suspended within a fluid filled housing. An optical waveguide that provides communication with the sensing element couples to a feedthrough assembly, which includes a cane-based optical waveguide forming a glass plug sealingly disposed in the housing. The glass plug provides optical communication between the optical waveguide and the sensing element. A pressure transmitting device can transmit the pressure of the fluid to the fluid within the housing. The assembly can maintain the sensing element in a near zero base strain condition and can protect the sensing element from shock/vibration.

    Abstract translation: 在恶劣环境中使用的光学传感器需要将光波导的密封压力紧密通过到传感器的内部。 在一个实施例中,用于确定在恶劣环境中的流体的压力的压力传感器组件包括悬挂在流体填充的壳体内的感测元件。 提供与感测元件的连通的光波导耦合到馈通组件,馈通组件包括形成密封地设置在壳体中的玻璃插头的基于基准的光波导。 玻璃插头提供光波导和感测元件之间的光通信。 压力传递装置可以将流体的压力传递到壳体内的流体。 组件可以将感测元件保持在接近零的基本应变状态,并且可以保护感测元件免受冲击/振动。

    Highly sensitive accelerometer
    4.
    发明申请
    Highly sensitive accelerometer 有权
    高灵敏度加速度计

    公开(公告)号:US20050076713A1

    公开(公告)日:2005-04-14

    申请号:US10933132

    申请日:2004-09-02

    CPC classification number: G01V1/181 G01P15/093 G01V1/226

    Abstract: A highly sensitive accelerometer for determining the acceleration of a structure includes a mass within a housing suspended by opposing support members. The support members are alternately wound around a pair of fixed mandrels and the mass in a push pull arrangement. At least a portion of one of the support members comprises a transducer capable measuring the displacement of the mass within the housing. An embodiment of the invention employs optical fiber coils as the support members for use in interferometric sensing processes. Arrays of such interferometer based accelerometers may be multiplexed using known techniques.

    Abstract translation: 用于确定结构的加速度的高度敏感的加速度计包括由相对的支撑构件悬挂的壳体内的质量。 支撑构件交替地卷绕在一对固定的心轴和质量块的推拉装置中。 支撑构件中的一个的至少一部分包括能够测量壳体内的质量的位移的换能器。 本发明的实施例采用光纤线圈作为用于干涉测量过程的支撑构件。 可以使用已知技术来复用这种基于干涉仪的加速度计的阵列。

    Method of repairing micromirrors in spatial light modulators
    5.
    发明授权
    Method of repairing micromirrors in spatial light modulators 有权
    在空间光调制器中修复微镜的方法

    公开(公告)号:US07375873B2

    公开(公告)日:2008-05-20

    申请号:US11069408

    申请日:2005-02-28

    CPC classification number: G02B26/0841

    Abstract: Disclosed herein is method of operating a device that comprises an array of micromirrors. The method comprises a process usable for repairing stuck micromirrors of the micromirror array during the operation. The reparation process applies, at the ON state, two consecutive refresh voltages to the mirror plates of the micromirrors in the array with the pulses being separated in time longer than the characteristic oscillation time of the micromirrors. The reparation process can be applied independently to the micromirrors. Alternatively, the reparation process can be incorporated with a bias inversion process.

    Abstract translation: 这里公开的是操作包括微镜阵列的装置的方法。 该方法包括可用于在操作期间修复微镜阵列的粘性微镜的过程。 修复过程在ON状态下,对阵列中的微镜的镜板施加两个连续的刷新电压,其中脉冲在时间上比微镜的特征振荡时间长。 修复过程可独立应用于微镜。 或者,修复过程可以结合偏置反转过程。

    System and apparatus for repairing micromirrors in spatial light modulators
    7.
    发明授权
    System and apparatus for repairing micromirrors in spatial light modulators 有权
    用于在空间光调制器中修复微镜的系统和装置

    公开(公告)号:US07751114B2

    公开(公告)日:2010-07-06

    申请号:US11774533

    申请日:2007-07-06

    CPC classification number: G02B26/0841

    Abstract: Disclosed herein are a system and apparatus for operating a device that comprises an array of micromirrors. The system and apparatus are usable for repairing stuck micromirrors of the micromirror array during the operation. The reparation applies, at the ON state, two consecutive refresh voltages to the mirror plates of the micromirrors in the array with the pulses being separated in time longer than the characteristic oscillation time of the micromirrors. The reparation can be applied independently to the micromirrors. Alternatively, the reparation can be incorporated with a bias inversion process.

    Abstract translation: 本文公开了一种用于操作包括微镜阵列的装置的系统和装置。 该系统和装置可用于在操作期间修复微镜阵列的卡滞微镜。 在ON状态下,对阵列中的微镜的镜面板进行两次连续刷新电压的修正,其中脉冲在时间上比微镜的特征振荡时间长。 可以独立地对微镜进行修补。 或者,可以用偏置反转处理来结合修补。

    Optical channel monitor
    8.
    发明授权
    Optical channel monitor 有权
    光通道监视器

    公开(公告)号:US07463828B2

    公开(公告)日:2008-12-09

    申请号:US10159370

    申请日:2002-05-31

    Abstract: An optical channel monitor is provided that sequentially or selectively filters an optical channel(s) 11 of light from a (WDM) optical input signal 12 and senses predetermined parameters of the each filtered optical signal (e.g., channel power, channel presence, signal-noise-ratio). The OCM 10 is a free-space optical device that includes a collimator assembly 15, a diffraction grating 20 and a mirror 22. A launch pigtail emits into free space the input signal through the collimator assembly 15 and onto the diffraction grating 20, which separates spatially each of the optical channels 11 of the collimated light, and reflects the separated channels of light onto the mirror 22. A λ/4 plate 26 is disposed between the mirror 22 and the diffraction grating 20. The mirror reflects the separated light back through the λ/4 plate 26 to the diffraction grating 20, which reflects the channels of light back through the collimating lens 18. The lens 18 focuses each separated channel of light (λ1-λN) at a different focal point in space. One of the optical channels 11 is focused onto a receive pigtail 28, which then propagates to a photodetector 30. A pivoting mechanism 34 pivots the diffraction grating 20 or mirror 22 about a pivot point 36 to sequentially or selectively focus each optical channel 11 to the receive pigtail 28. A position sensor 42 detects the displacement of the diffraction grating 24 or mirror.

    Abstract translation: 提供了一种光通道监视器,其顺序地或选择性地对来自(WDM)光输入信号12的光的通道11进行滤波,并且感测每个滤波的光信号的预定参数(例如,信道功率,信道存在, 噪声比)。 OCM 10是包括准直器组件15,衍射光栅20和反射镜22的自由空间光学装置。发射尾纤通过准直器组件15和衍射光栅20将衍射光栅20发射到自由空间中,输入信号分离 准直光的每个光通道11,并将分离的光反射到反射镜22上.λ/ 4板26设置在反射镜22和衍射光栅20之间。反射镜将分离的光反射回 λ/ 4板26到衍射光栅20,其反射通过准直透镜18的光通道。透镜18将每个分离的光(λ1-λN)通道在空间中的不同焦点处聚焦。 光通道11中的一个被聚焦到接收引线28上,接收引线28然后传播到光电检测器30.枢转机构34围绕枢转点36枢转衍射光栅20或反射镜22,以顺序地或选择性地将每个光通道11聚焦到 接收尾纤28.位置传感器42检测衍射光栅24或反射镜的位移。

    System and Apparatus for Repairing Micromirrors in Spatial Light Modulators
    10.
    发明申请
    System and Apparatus for Repairing Micromirrors in Spatial Light Modulators 有权
    用于修复空间光调制器中的微镜的系统和装置

    公开(公告)号:US20070258129A1

    公开(公告)日:2007-11-08

    申请号:US11774533

    申请日:2007-07-06

    CPC classification number: G02B26/0841

    Abstract: Disclosed herein are a system and apparatus for operating a device that comprises an array of micromirrors. The system and apparatus are usable for repairing stuck micromirrors of the micromirror array during the operation. The reparation applies, at the ON state, two consecutive refresh voltages to the mirror plates of the micromirrors in the array with the pulses being separated in time longer than the characteristic oscillation time of the micromirrors. The reparation can be applied independently to the micromirrors. Alternatively, the reparation can be incorporated with a bias inversion process.

    Abstract translation: 本文公开了一种用于操作包括微镜阵列的装置的系统和装置。 该系统和装置可用于在操作期间修复微镜阵列的卡滞微镜。 在ON状态下,对阵列中的微镜的镜面板进行两次连续刷新电压的修正,其中脉冲在时间上比微镜的特征振荡时间长。 可以独立地对微镜进行修补。 或者,可以用偏置反转处理来结合修补。

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