公开(公告)号：WO9957590A8

公开(公告)日：2000-04-13

申请号：PCT/US9910111

申请日：1999-05-06

Applicant: CIDRA CORP

Inventor： MARON ROBERT J ,  WORDEN RAYMOND D ,  DUNPHY JAMES R ,  GRUNBECK JOHN J

IPC: G01D5/353 ,  G02B6/255 ,  G02B6/36

CPC classification number: G02B6/2552 ,  G01D5/353 ,  G02B6/2551

Abstract: An optical waveguide (10), such as an optical fiber, having a cladding (12) and a core (14), is provided with a bulge (16) of the outer dimension over a predetermined length L of the waveguide (10). The cladding may also have an outer buffer layer (18). The bulge (16) provides a low-creep high-strength means for attaching the fiber (10) to a structure, e.g., for use in an optical sensor. Also, the fiber (10) with the bulge (16) exhibits low optical loss of light propagating in the core (14) through the bulge (16) and good mechanical strength.

Abstract translation: 具有包层（12）和芯（14）的诸如光纤的光波导（10）在波导（10）的预定长度L上设置有外部尺寸的凸起（16）。 包层也可以具有外缓冲层（18）。 凸起（16）提供用于将光纤（10）附接到例如用于光学传感器的结构的低蠕变高强度装置。 此外，具有凸起（16）的光纤（10）表现出通过凸起（16）在芯部（14）中传播的光的光损耗低，并具有良好的机械强度。

公开(公告)号：WO03028266A9

公开(公告)日：2004-05-06

申请号：PCT/US0230323

申请日：2002-09-25

Applicant: CIDRA CORP

Inventor： MOON JOHN A ,  KERSEY ALAN D ,  DAWSON JAY W ,  DUNPHY JAMES R ,  PINTO JOSEPH F ,  O'KEEFE CHRISTIAN ,  SZCZEPANEK PAUL

IPC: G02B6/26 ,  G02B6/34 ,  G02B6/42 ,  G02B26/08 ,  G02B27/10 ,  H04J14/02

CPC classification number: G02B6/29311 ,  G02B6/262 ,  G02B6/272 ,  G02B6/2773 ,  G02B6/29385 ,  G02B6/29395 ,  G02B6/4226 ,  G02B26/0841 ,  G02B27/1006 ,  G02B27/1086 ,  G02B27/126 ,  G02B27/147

Abstract: A reconfigurable optical channel monitor selects and determines a parameter of desired optical channel(s) from and/or to an optical WDM input signal. The OCM includes a spatial light modulator having a micro-mirror device with a two-dimensional array of micro-mirrors that tilt between first and second positions in response to a control signal from a controller in accordance with a switching algorithm and an input command. A collimator, diffraction grating, and Fourier lens collectively converge the optical input channels onto the micro-mirrors array. The optical channel is focused onto a plurality of micro-mirrors. To select each input channel, a group of micro-mirrors associated with each desired input channel is tilted to reflect the desired input channel back along the return path to a photodetector and processing unit to determine a parameter of the selected input signal.

Abstract translation: 可重新配置的光通道监视器从光WDM输入信号中选择并确定所需光信道的参数。 OCM包括具有微反射镜装置的空间光调制器，其具有响应于来自控制器的根据切换算法和输入命令的控制信号而在第一和第二位置之间倾斜的二维阵列的微镜阵列。 准直仪，衍射光栅和傅里叶透镜将光输入通道共同收敛到微镜阵列上。 光通道被聚焦到多个微反射镜上。 为了选择每个输入通道，与每个期望的输入通道相关联的一组微反射镜被倾斜以将所需的输入通道反射回到光检测器和处理单元的返回路径，以确定所选输入信号的参数。

公开(公告)号：WO9957589A8

公开(公告)日：2000-03-02

申请号：PCT/US9910109

申请日：1999-05-06

Applicant: CIDRA CORP

Inventor： MARON ROBERT J ,  GRUNBECK JOHN J ,  DUNPHY JAMES R ,  FERNALD MARK R ,  DAIGLE GUY A ,  ENGEL THOMAS W ,  HELM CHARLES W

IPC: G01D5/353 ,  G01L9/00 ,  G01L11/02 ,  G02B6/00 ,  G02B6/02 ,  G02B6/24 ,  G02B6/255 ,  G02B6/34 ,  G02B6/36 ,  G02B6/38

CPC classification number: G02B6/3861 ,  G01L9/0039 ,  G01L9/0077 ,  G01L11/025 ,  G02B6/02052 ,  G02B6/2552 ,  G02B6/3644 ,  G02B6/3854

Abstract: A creep-resistant optical fiber attachment includes an optical waveguide (10), such as an optical fiber, having a cladding (12) and a core (14), having a variation region (16) (expanded or recessed) of an outer dimension of the waveguide (10) and a structure, such as a ferrule (30), disposed against at least a portion of the variation region (16). The ferrule (30) has a size and shape that mechanically locks the ferrule (30) to the variation (16), thereby attaching the fiber (10) to the ferrule (30) with minimal relative movement (or creep) in at least one direction between the fiber (10) and the ferrule (30). The ferrule (30) may be attached to or part of a larger structure, such as a housing (62). The variation (16) and the ferrule (30) may have various different shapes and sizes. There may also be a buffer layer (18) between the cladding (12) and the ferrule (30) to protect the fiber (10) and/or to help secure the ferrule (30) to the fiber (10) to minimize creep.

Abstract translation: 耐蠕变光纤附件包括具有包层（12）和芯（14）的诸如光纤的光波导（10），其具有外部尺寸的变化区域（扩展或凹入） 的波导（10）以及抵靠所述变化区域（16）的至少一部分设置的诸如套圈（30）的结构。 套管（30）具有将套圈（30）机械地锁定到变型（16）上的尺寸和形状，从而以至少一个相对运动（或蠕变）将纤维（10）附接到套圈（30） 纤维（10）和套圈（30）之间的方向。 套圈（30）可以附接到较大结构的一部分，例如壳体（62）。 变型（16）和套圈（30）可以具有各种不同的形状和尺寸。 在包层（12）和套管（30）之间还可以存在缓冲层（18），以保护纤维（10）和/或有助于将套圈（30）固定到纤维（10）上以使蠕变最小化。

公开(公告)号：WO0125800A3

公开(公告)日：2001-11-29

申请号：PCT/US0026331

申请日：2000-09-25

Applicant: CIDRA CORP ,  KNUDSEN SVERRE ,  BERG ARNE ,  DUNPHY JAMES R ,  WOO DANIEL

Inventor： KNUDSEN SVERRE ,  BERG ARNE ,  DUNPHY JAMES R ,  WOO DANIEL

IPC: G01P15/03 ,  G01P15/09 ,  G01P15/093 ,  G01P15/12 ,  G01V1/18 ,  G01P15/08

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 of measuring the displacement of the mass within the housing. An embodiment of the invention employs optical fiber coils as support members for use in interferometric sensing processes. Arrays of such interferometer based accelerometers may be multiplexed using WDM or similar methods.

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WDM或类似方法来复用这种基于干涉仪的加速度计的阵列。

公开(公告)号：WO0037914A9

公开(公告)日：2001-03-29

申请号：PCT/US9928868

申请日：1999-12-06

Applicant: CIDRA CORP

Inventor： FERNALD MARK R ,  BAILEY TIMOTHY J ,  MILLER MATTHEW B ,  SULLIVAN JAMES M ,  DUNPHY JAMES R ,  DAVIS MICHAEL A ,  KERSEY ALAN D ,  WRIGHT CHRISTOPHER J ,  PUTNAM MARTIN A ,  BRUCATO ROBERT N ,  SANDERS PAUL E

IPC: G01L1/24 ,  G01J3/18 ,  G01L11/00 ,  G01L11/02 ,  G02B5/18 ,  G02B6/00 ,  G02B6/02

CPC classification number: G01L11/025

Abstract: A fiber grating pressure sensor includes an optical sensing element (20, 600) which includes an optical fiber (10) having a Bragg grating (12) impressed therein which is encased within and fused to at least a portion of a glass capillary tube (20) and/or a large diameter waveguide grating (600) having a core and a wide cladding and which has an outer transverse dimension of at least 0.3 mm. Light (14) is incident on the grating (12) and light (16) is reflected from the grating (12) at a reflection wavelength lambda 1. The sensing element (20, 600) may be used by itself as a sensor or located within a housing (48, 60, 90, 270, 300). When external pressure P increases, the grating (12) is compressed and the reflection wavelength lambda 1 changes.

Abstract translation: 光纤光栅压力传感器包括光学传感元件（20,600），光学传感元件（20,600）包括其中印有布拉格光栅（12）的光纤（10），其被封装在玻璃毛细管（20）的至少一部分内 ）和/或具有芯和宽包层并且具有至少0.3mm的外横向尺寸的大直径波导光栅（600）。 光（14）入射到光栅（12）上，光（16）以反射波长λ1从光栅（12）反射。感测元件（20,600）可以自身用作传感器或定位 在一个房屋内（48,60,90,270,300）。 当外部压力P增加时，光栅（12）被压缩，反射波长λ1改变。

公开(公告)号：WO0039548A3

公开(公告)日：2000-09-21

申请号：PCT/US9928866

申请日：1999-12-06

Applicant: CIDRA CORP

Inventor： WRIGHT CHRISTOPHER J ,  BAILEY TIMOTHY J ,  FERNALD MARK R ,  SULLIVAN JAMES M ,  DAVIS MICHAEL A ,  DUNPHY JAMES R ,  KERSEY ALAN D ,  PUTNAM MARTIN A ,  BRUCATO ROBERT N ,  SANDERS PAUL E

IPC: G01K11/32

CPC classification number: G01K11/32

Abstract: A strain-isolated Bragg grating temperature sensor includes an optical sensing element (20, 600) which includes an optical fiber (10) having at least one Bragg grating (12) disposed therein which is encased within and fused to at least a portion of a glass capillary tube (20) and/or a large diameter waveguide grating (600) having a core and a wide cladding and having the grating (12) disposed therein, which senses temperature changes but is substantially not sensitive to strains on the element caused by the fiber or other effects. Light (14) is incident on the grating (12) and light (16) is reflected at a reflection wavelength lambda 1. The shape of the sensing element (20, 600) may be other geometries and/or more than one concentric tube may be used or more than one grating or pair of gratings may be used or more than one fiber or optical core may be used. At least a portion of the element (20, 600) may be doped between a pair of gratings (150, 152), disposed therein to form a temperature tuneable laser or the grating (12) or gratings (150, 152) may be constructed as a temperature tuneable DFB laser disposed in the element. Also, the element may have an inner or outer tapered regions (22, 27), respectively, to provide strain relief and/or added pull strength for the fiber (10). Further, the fiber (10) and the tube (20) may be made of different coefficients of thermal expansion for increased sensitivity.

Abstract translation: 一种应变隔离布拉格光栅温度传感器包括光学传感元件（20,600），该光学传感元件包括光纤（10），光纤（10）中布置有至少一个布拉格光栅（12），所述布拉格光栅（12）被包封在并且熔合到至少一部分 玻璃毛细管（20）和/或大直径波导光栅（600），其具有芯和宽包层并且具有设置在其中的光栅（12），其检测温度变化但基本上不会对由 纤维或其他影响。 光（14）入射在光栅（12）上并且光（16）以反射波长λ1反射。感测元件（20,600）的形状可以是其他几何形状和/或多于一个的同心管可以 或者可以使用多于一个光栅或一对光栅，或者可以使用多于一个的光纤或光学芯。 元件（20,600）的至少一部分可以被掺杂在设置在其中的一对光栅（150,152）之间以形成温度可调激光器，或者光栅（12）或光栅（150,152）可以被构造 作为设置在元件中的温度可调的DFB激光器。 而且，该元件可分别具有内部或外部锥形区域（22,27），以为光纤（10）提供应力消除和/或增加的拉力。 此外，为了提高灵敏度，纤维（10）和管（20）可以由不同的热膨胀系数构成。