公开(公告)号：US07406877B2

公开(公告)日：2008-08-05

申请号：US10555630

申请日：2004-11-18

申请人： M. Laurent Maurin

发明人： M. Laurent Maurin

IPC分类号： G01L1/24

CPC分类号： G01D5/35303 ,  G01B11/165 ,  G01L1/246

摘要： Uniaxial deformation-measuring device includes a section of optical fiber equipped with a Bragg grating aligned with the measurement axis, and a test body subjected to the deformations to be measured., this device includes the fixing points for attaching the fiber to the test body. The fixing points are separated by a distance (Lfib) having a variation (ΔLfib). When the test body is stressed by the deformation, the effective length (Lce) of the test body has an elongation (ΔLce). The length (Lfib) of the section of optical fiber and the effective length (Lce) of the measurement body are such that the longitudinal deformation (ΔLfib/Lfib) of the section of optical fiber is strictly greater than the originating deformation (ΔLce/Lce) of the test body, thus defining an amplification factor K which is strictly greater than 1 and which is equal to the quotient (ΔLfib/Lfib)/(ΔLce/Lce) in the first order.

摘要翻译： 单轴变形测量装置包括配备有与测量轴对准的布拉格光栅的光纤部分和经受测量变形的测试体，该装置包括用于将光纤附着到测试体的固定点。 固定点被分开具有变化（ΔL）的距离（L）。 当测试体受到变形的应力时，测试体的有效长度（长度）具有伸长率（ΔL）。 光纤部分的长度（L）和测量体的有效长度（L ）使得纵向变形（ΔL< 光纤部分的光纤的起始变形严格地大于光纤的截面的起始变形（ΔL/ L） 测试体，因此定义了严格大于1并且等于商的放大因子K（DeltaL＆lt;＆lt; 第一顺序）。

公开(公告)号：US20060163456A1

公开(公告)日：2006-07-27

申请号：US10520148

申请日：2003-06-30

申请人： Christian Wittrisch ,  Laurent Maurin ,  Daniel Averbuch ,  Pierre Ferdinand

发明人： Christian Wittrisch ,  Laurent Maurin ,  Daniel Averbuch ,  Pierre Ferdinand

IPC分类号： G01J1/04

CPC分类号： G01L9/0039 ,  G01L11/025

摘要： The present invention relates to a temperature-compensated optical fiber pressure detector for detecting pressure variations in at least one medium in relation to a reference medium such as the atmosphere or a medium where a back pressure prevails. The detector essentially comprises a deformable element (2) such as a bellows (5) exposed on one side to the reference medium and on the opposite side to the pressure to be measured, an optical fiber portion (F1) including at least one optical grating such as a Bragg grating (B1), which is connected on one side to deformable element (2) and on the opposite side to a fixed point. The optical fiber portion is subjected to a prestress by a device (6, 15, 20, 21) and its elongation varies with the displacements of the deformable element. The device applies the prestress to optical fiber portion (F1) between deformable element (2) and another fixed element (15) isolated from the medium by a rigid housing (1). An optical system (25) detects the deformations undergone by said optical grating in response to the pressure variations undergone by the deformable element. Another part (F2) of the optical fiber that is not subjected to stresses (or another non-stressed fiber portion connected to the first one) preferably comprises another similar optical grating (B2) also allowing measurement of the temperature variations. By duplicating the deformable elements and possibly the stress applying device (3), differential pressure variations can also be measured. Such a detector can notably be applied to pressure and temperature measurements in wells where difficult conditions prevail.

摘要翻译： 本发明涉及一种温度补偿光纤压力检测器，用于检测至少一种介质相对于诸如大气的参考介质或背压的介质的压力变化。 检测器基本上包括可变形元件（2），例如在一侧暴露于参考介质并且在相对于待测量压力的相对侧上的波纹管（5），包括至少一个光学部件 光栅，例如布拉格光栅（B 1），其一侧连接到可变形元件（2）上，并在相对侧连接到固定点。 光纤部分通过装置（6,15,20,21）进行预应力，其伸长率随着可变形元件的位移而变化。 该装置将预应力施加到可变形元件（2）与通过刚性壳体（1）与介质隔离的另一个固定元件（15）之间的光纤部分（F 1）。 光学系统（25）响应于可变形元件所经受的压力变化而检测所述光栅所经历的变形。 不受应力的光纤的另一部分（F 2）（或与第一个连接的另一个非应力光纤部分）优选地包括也允许测量温度变化的另一个类似的光栅（B 2）。 通过复制可变形元件和可能的应力施加装置（3），还可以测量差压变化。 这种检测器可以显着地应用于难以满足条件的井中的压力和温度测量。

公开(公告)号：US06571583B1

公开(公告)日：2003-06-03

申请号：US09119448

申请日：1998-07-21

申请人： Laurent Maurin

发明人： Laurent Maurin

IPC分类号： C03B3701

CPC分类号： C03B37/0253 ,  C03B2205/40 ,  G01B11/10

摘要： A device draws an optical fiber from one end of a preform melted by a furnace, an optical sensor being disposed a the exit from the furnace to measure the diameter of the optical fiber for the purpose of adjusting the tension with which the optical fiber is drawn. The sensor is surrounded by a mask in two parts joined at two pairs of edges to form a dark chamber through which the optical fiber passes. The mask protects the optical sensor from radiation from ambient light sources, especially rays emitted by the furnace, which cause localized measurement artifacts. It improves the accuracy of measurement of the diameter of the optical fiber leading, by eliminating artifacts, to a reduction in the number of times the optical fiber is cut.

摘要翻译： 设备从由熔炉熔化的预成型坯的一端拉制光纤，光学传感器设置在炉的出口处，以测量光纤的直径，以调节光纤所拉伸的张力 。 传感器由两个部分连接在两对边缘上的掩模包围，以形成一个暗室，光纤通过该暗室。 掩模保护光学传感器免受来自环境光源的辐射，特别是由炉发射的射线，这导致局部测量伪像。 通过消除赝像，可以提高光纤直径的测量精度，从而减少光纤的切割次数。

公开(公告)号：US07197934B2

公开(公告)日：2007-04-03

申请号：US10520148

申请日：2003-06-30

申请人： Christian Wittrisch ,  Laurent Maurin ,  Daniel Averbuch ,  Pierre Ferdinand

发明人： Christian Wittrisch ,  Laurent Maurin ,  Daniel Averbuch ,  Pierre Ferdinand

IPC分类号： G01J1/04

CPC分类号： G01L9/0039 ,  G01L11/025

摘要： The present invention relates to a temperature-compensated optical fiber pressure detector for detecting pressure variations in at least one medium in relation to a reference medium such as the atmosphere or a medium where a back pressure prevails. The detector essentially comprises a deformable element (2) such as a bellows (5) exposed on one side to the reference medium and on the opposite side to the pressure to be measured, an optical fiber portion (F1) including at least one optical grating such as a Bragg grating (B1), which is connected on one side to deformable element (2) and on the opposite side to a fixed point. The optical fiber portion is subjected to a prestress by a device (6, 15, 20, 21) and its elongation varies with the displacements of the deformable element. The device applies the prestress to optical fiber portion (F1) between deformable element (2) and another fixed element (15) isolated from the medium by a rigid housing (1). An optical system (25) detects the deformations undergone by said optical grating in response to the pressure variations undergone by the deformable element. Another part (F2) of the optical fiber that is not subjected to stresses (or another non-stressed fiber portion connected to the first one) preferably comprises another similar optical grating (B2) also allowing measurement of the temperature variations. By duplicating the deformable elements and possibly the stress applying device (3), differential pressure variations can also be measured. Such a detector can notably be applied to pressure and temperature measurements in wells where difficult conditions prevail.

摘要翻译： 本发明涉及一种温度补偿光纤压力检测器，用于检测至少一种介质相对于诸如大气的参考介质或背压的介质的压力变化。 检测器基本上包括可变形元件（2），例如在一侧暴露于参考介质并且在相对于待测量压力的相对侧上的波纹管（5），包括至少一个光学部件 光栅，例如布拉格光栅（B 1），其一侧连接到可变形元件（2）上，并在相对侧连接到固定点。 光纤部分通过装置（6,15,20,21）进行预应力，其伸长率随着可变形元件的位移而变化。 该装置将预应力施加到可变形元件（2）与通过刚性壳体（1）与介质隔离的另一个固定元件（15）之间的光纤部分（F 1）。 光学系统（25）响应于可变形元件所经受的压力变化而检测所述光栅所经历的变形。 不受应力的光纤的另一部分（F 2）（或与第一个连接的另一个非应力光纤部分）优选地包括也允许测量温度变化的另一个类似的光栅（B 2）。 通过复制可变形元件和可能的应力施加装置（3），还可以测量差压变化。 这种检测器可以显着地应用于难以满足条件的井中的压力和温度测量。

公开(公告)号：US07167626B2

公开(公告)日：2007-01-23

申请号：US10519929

申请日：2003-07-04

申请人： Laurent Maurin

发明人： Laurent Maurin

IPC分类号： G02B6/00

CPC分类号： G02B6/3644 ,  B23B31/102 ,  G01N3/04 ,  G01N2203/0226 ,  G01N2203/028

摘要： The purpose of this invention is a device (1) for fixing a fiber (2) comprising a rigid and brittle core (24) surrounded by a mechanically deformable cladding (22), and that can be subjected to at least one mechanical stress. According to the invention, the clamping device comprises concentric jaws (4), each jaw comprising an inner surface (14) composed of a central portion (16) and two end portions (18, 20), the end portions being made so as to prolong the central portion by gradually moving away from the main axis of the device, each comprising at least one part in contact with the mechanically deformable cladding when the jaw occupies a clamped position.Use of this device for fixing an optical fiber and any optical fiber sensor, particularly a Bragg grating optical fiber sensor.

摘要翻译： 本发明的目的是一种用于固定纤维（2）的装置（1），该纤维（2）包括由机械可变形的包层（22）包围的刚性和脆性芯体（24），并且可以承受至少一个机械应力。 根据本发明，夹紧装置包括同心爪（4），每个夹爪包括由中心部分（16）和两个端部部分（18,20）组成的内表面（14），所述端部部分被制成 通过逐渐远离装置的主轴线延伸中心部分，每个包括当夹爪占据夹紧位置时与机械可变形包层接触的至少一个部分。 使用该装置固定光纤和任何光纤传感器，特别是布拉格光栅传感器。

公开(公告)号：US20050232568A1

公开(公告)日：2005-10-20

申请号：US10519929

申请日：2003-07-04

申请人： Laurent Maurin

发明人： Laurent Maurin

IPC分类号： B23B31/10 ,  G01N3/02 ,  G01N3/04 ,  G02B6/36 ,  G02B6/00

CPC分类号： G02B6/3644 ,  B23B31/102 ,  G01N3/04 ,  G01N2203/0226 ,  G01N2203/028

摘要： The purpose of this invention is a device (1) for fixing a fiber (2) comprising a rigid and brittle core (24) surrounded by a mechanically deformable cladding (22), and that can be subjected to at least one mechanical stress. According to the invention, the clamping device comprises concentric jaws (4), each jaw comprising an inner surface (14) composed of a central portion (16) and two end portions (18, 20), the end portions being made so as to prolong the central portion by gradually moving away from the main axis of the device, each comprising at least one part in contact with the mechanically deformable cladding when the jaw occupies a clamped position. Use of this device for fixing an optical fiber and any optical fiber sensor, particularly a Bragg grating optical fiber sensor.

摘要翻译： 本发明的目的是一种用于固定纤维（2）的装置（1），该纤维（2）包括由机械可变形的包层（22）包围的刚性和脆性芯体（24），并且可以承受至少一个机械应力。 根据本发明，夹紧装置包括同心爪（4），每个夹爪包括由中心部分（16）和两个端部部分（18,20）组成的内表面（14），所述端部部分被制成 通过逐渐远离装置的主轴线延伸中心部分，每个包括当夹爪占据夹紧位置时与机械可变形包层接触的至少一个部分。 使用该装置固定光纤和任何光纤传感器，特别是布拉格光栅传感器。

公开(公告)号：US06428622B1

公开(公告)日：2002-08-06

申请号：US09534536

申请日：2000-03-27

申请人： Laurent Maurin

发明人： Laurent Maurin

IPC分类号： B05C312

CPC分类号： C03C25/18 ,  C03C25/12

摘要： The fiber-coating apparatus comprises an injector having a tubular grid mounted between two dies between which the fiber travels on the axis of the grid, which grid filled with resin that penetrates therein via holes distributed through its wall. The wall of outside diameter dext is situated at a minimum distance from the wall of diameter Dext which surrounds it in the injector, such that the ratio Dext/dext is not less than 1.35 and the difference Dext−dext is not less than 4 millimeters. The holes through the wall have a minimum diameter of 0.50 mm and a minimum density of 0.20 holes per mm2. The height of the grid lies in the range 5 mm to 50 mm, and the difference between the outside and inside diameters of the cylindrical wall of the grid is not greater than 10 mm, with a minimum inside diameter of 5 mm.

摘要翻译： 纤维涂覆装置包括一个注射器，其具有安装在两个管芯之间的管状栅格，纤维在栅格的轴线上行进，栅格填充有通过其壁壁分布的孔的树脂。 外径曲面的壁位于与注射器中围绕的直径Dext的直径Dext的最小距离处，使得Dext / dext的比率不小于1.35，差分Dext -xtxt不小于4毫米。 穿过墙壁的孔的最小直径为0.50mm，最小密度为0.20mm / mm 2。 格栅的高度在5毫米至50毫米的范围内，格栅圆柱形壁的外径和内径之差不大于10毫米，最小内径为5毫米。

公开(公告)号：US5972115A

公开(公告)日：1999-10-26

申请号：US982075

申请日：1997-12-01

申请人： Laurent Maurin ,  Gerard Lavanant ,  Didier Pezet

发明人： Laurent Maurin ,  Gerard Lavanant ,  Didier Pezet

IPC分类号： C03B37/018

CPC分类号： C03B37/01846

摘要： An installation for fabricating an optical fiber preform includes a reaction tube and an excess silica soot exhaust tube equipped internally with a screw having flat helical threads for removing the excess soot. The screw is a helix hollowed out longitudinally and the installation includes a cylinder housed within the interior passage of the helix, eccentrically disposed within this passage and bearing against the inside surface of the helix. The cylinder is rotated about its axis.

摘要翻译： 用于制造光纤预制件的装置包括反应管和多余的二氧化硅烟灰排气管，其内装有具有用于除去多余烟灰的平螺旋螺纹的螺钉。 螺钉是纵向挖空的螺旋管，并且该装置包括容纳在螺旋的内部通道内的气缸，偏心地设置在该通道内并抵靠螺旋的内表面。 圆筒围绕其轴线旋转。