公开(公告)号：US20090169151A1

公开(公告)日：2009-07-02

申请号：US12402023

申请日：2009-03-11

Applicant: Dirk Neitzel ,  Wolfgang Weaspy ,  Horst Kontants

Inventor： Dirk Neitzel ,  Wolfgang Weaspy ,  Horst Kontants

IPC: G01L1/24 ,  G02B6/36

CPC classification number: G01L1/243 ,  G02B6/381

Abstract: A ferrule for an evanescence field sensor line is specified that has a lower part and a correspondingly attachable upper part. The upper and lower parts respectively have a recess substantially in the shape of a half shell in such a way that in the assembled state a guide tube is formed for holding an optical wavelength in a fashion enclosing the end face. A number of geometric structures for locally fixing the optical wavelength are respectively arranged in the recesses. Furthermore, a pressure sensor having such a ferrule is specified that contains an optical wavelength configured for pressure acquisition by influencing the assigned evanescence field, and at least one optoelectronic module. The ferrule is assigned to the optoelectronic module.

Abstract translation: 规定了消弧场传感器线的套圈，其具有下部和相应可安装的上部。 上部和下部分别具有基本上为半壳形状的凹部，使得在组装状态下，形成用于以围绕端面的方式保持光学波长的导向管。 用于局部固定光学波长的多个几何结构分别布置在凹槽中。 此外，具有这样的套圈的压力传感器被规定为包含通过影响分配的衰减场而构成用于压力获取的光波长和至少一个光电模块。 套圈被分配给光电模块。

公开(公告)号：US07543982B2

公开(公告)日：2009-06-09

申请号：US11665823

申请日：2006-09-29

Applicant: Yoshinori Yamamoto ,  Itaru Sakabe ,  Eisuke Sasaoka ,  Hisashi Tanji

Inventor： Yoshinori Yamamoto ,  Itaru Sakabe ,  Eisuke Sasaoka ,  Hisashi Tanji

IPC: G01K3/00

CPC classification number: G01L1/243 ,  G01B11/18 ,  G01D5/35348 ,  G01K11/32 ,  G01M11/083

Abstract: The present invention relates to a sensor or the like having a structure that enables accurate temperature measurement in a wide temperature range including a low-temperature region and is suitable for independently and accurately determining temperature variations and strains appearing in an object to be measured. The sensor comprises a laser light source, a sensor section that has a plurality of waveguides transmitting a laser light from the laser light source therethrough, a detecting section, and an analyzing section. The detecting section detects a plurality of Brillouin spectra obtained from the sensor section. The analyzing section determines at least one measurement value of a temperature in the sensor section and a strain generated in the sensor section, based on fluctuations of parameters defining the respective detected Brillouin spectra. In particular, the sensor section has a structure such that the variation of the Brillouin spectrum in response to a disturbance differs between the waveguides. Thus, by simultaneously monitoring the Brillouin spectra that varying a different manner in a plurality of waveguides, it is possible not only to measure accurately the temperature in a wide temperature range including a low-temperature region, but also to make distinction between the strain and temperature.

Abstract translation: 本发明涉及具有能够在包括低温区域的宽温度范围内进行精确的温度测量的结构的传感器等，并且适用于独立且精确地确定出现在被测量物体中的温度变化和应变。 传感器包括激光光源，传感器部分，其具有透射来自激光光源的激光的多个波导，检测部和分析部。 检测部分检测从传感器部分获得的多个布里渊频谱。 基于定义相应检测到的布里渊光谱的参数的波动，分析部分确定传感器部分中的温度的至少一个测量值和在传感器部分中产生的应变。 特别地，传感器部分具有使得响应于干扰的布里渊频谱的变化在波导之间不同的结构。 因此，通过同时监视在多个波导中改变不同方式的布里渊光谱，不仅可以在包括低温区域的宽温度范围内精确地测量温度，而且可以区分应变和 温度。

公开(公告)号：US20090056383A1

公开(公告)日：2009-03-05

申请号：US12263831

申请日：2008-11-03

Applicant: Gary Pickrell ,  Daniel Kominsky ,  Roger Stolen ,  Jeong I. Kim ,  Anbo Wang ,  Ahmad Safaai-Jazi

Inventor： Gary Pickrell ,  Daniel Kominsky ,  Roger Stolen ,  Jeong I. Kim ,  Anbo Wang ,  Ahmad Safaai-Jazi

IPC: C03B37/022

CPC classification number: G02B6/02385 ,  C03B37/01297 ,  C03B37/016 ,  C03B37/02781 ,  C03B2203/14 ,  C03B2203/42 ,  C03C11/007 ,  C03C13/04 ,  G01L1/243 ,  G02B6/02295 ,  G02B6/02333 ,  G02B6/02338 ,  G02B6/02357 ,  G02B6/02366 ,  G02B6/032

Abstract: A random array of holes is created in an optical fiber by gas generated during fiber drawing. The gas forms bubbles which are drawn into long, microscopic holes. The gas is created by a gas generating material such as silicon nitride. Silicon nitride oxidizes to produce nitrogen oxides when heated. The gas generating material can alternatively be silicon carbide or other nitrides or carbides. The random holes can provide cladding for optical confinement when located around a fiber core. The random holes can also be present in the fiber core. The fibers can be made of silica. The present random hole fibers are particularly useful as pressure sensors since they experience a large wavelength dependant increase in optical loss when pressure or force is applied.

Abstract translation: 在纤维拉伸中产生的气体在光纤中产生随机阵列的孔。 气体形成气泡，其被吸入长的微观孔中。 气体由诸如氮化硅的气体发生材料产生。 氮化硅在加热时氧化生成氮氧化物。 气体发生材料可以替代地是碳化硅或其它氮化物或碳化物。 当位于纤维芯周围时，随机孔可以提供用于光学限制的包层。 随机孔也可以存在于纤维芯中。 纤维可以由二氧化硅制成。 当前的随机孔纤维作为压力传感器是特别有用的，因为当施加压力或力时，它们经历大的波长依赖性的光学损失增加。

公开(公告)号：US20070183734A1

公开(公告)日：2007-08-09

申请号：US11652642

申请日：2007-01-12

Applicant: Morihisa Fukushi ,  Yasuyuki Hishida ,  Akira Suzuki ,  Shigenori Kobayashi ,  Hiroyuki Takahashi ,  Ryotaro Kachu

Inventor： Morihisa Fukushi ,  Yasuyuki Hishida ,  Akira Suzuki ,  Shigenori Kobayashi ,  Hiroyuki Takahashi ,  Ryotaro Kachu

IPC: G02B6/00

CPC classification number: G01L1/243 ,  G02B6/02033 ,  G02B6/35 ,  G02B6/3574 ,  G02B6/3594

Abstract: A method for fabricating an optical fiber impulse sensor having an optical fiber and a molded portion molded around the perimeter of the optical fiber. The method forms, in the molded portion, an optical fiber insertion hole and an optical fiber insertion slit for inserting the optical fiber into the optical fiber insertion hole. The method inserts the optical fiber from the slit into the optical fiber insertion hole.

Abstract translation: 一种制造光纤脉冲传感器的方法，该光纤脉冲传感器具有围绕光纤周边成型的光纤和模制部分。 该方法在模制部分中形成用于将光纤插入光纤插入孔的光纤插入孔和光纤插入缝隙。 该方法将光纤从狭缝插入光纤插入孔。

公开(公告)号：US06912912B2

公开(公告)日：2005-07-05

申请号：US10916041

申请日：2004-08-11

Applicant: Gerhard Reichinger ,  Georg Kodl

Inventor： Gerhard Reichinger ,  Georg Kodl

IPC: B60J1/00 ,  G01L1/24

CPC classification number: G01L1/243

Abstract: A pressure sensor includes an optical waveguide having an optical fiber with a refractive index n1, located in a fiber guide with a refractive index n3, forming an intermediate region. A medium with a refractive index n2 is located in the intermediate region. The refractive indices correspond to the relation n3>n1>n2. When subjected to a pressure, the fiber guide is pressed against the optical fiber such that the condition for the total reflection required for the normal optical waveguidance in the optical waveguide is no longer fulfilled, and attenuation takes place. The attenuation is evaluated in a corresponding control unit. The pressure sensor is especially provided for an anti-pinch device in the motor vehicle industry.

Abstract translation: 压力传感器包括具有折射率n 1的光纤的光波导，位于折射率为n 3的光纤引导件中，形成中间区域。 折射率为n 2的介质位于中间区域。 折射率对应于关系n 3> n 1> n 2。 当受到压力时，纤维导向件被压在光纤上，使得光波导中的普通光波导所需的全反射条件不再满足，并且发生衰减。 在相应的控制单元中评估衰减。 压力传感器特别提供用于汽车工业中的防夹装置。

公开(公告)号：US06674928B2

公开(公告)日：2004-01-06

申请号：US09917643

申请日：2001-07-31

Applicant: Gregg A. Johnson ,  Michael D. Todd ,  Bryan L. Althouse ,  Chia-Chen Chang

Inventor： Gregg A. Johnson ,  Michael D. Todd ,  Bryan L. Althouse ,  Chia-Chen Chang

IPC: G02B600

CPC classification number: G01L1/243 ,  G01D5/35383 ,  G01K11/3206 ,  G01L1/246

Abstract: A new optical sensing device containing fiber Bragg gratings, a scanning bandpass filter, an interferometer and multiple photodetectors is disclosed. The present invention also describes a new system and method for fibre Bragg grating (FBG) sensor interrogation and multiplexing. The new system combines a scanning Fabry-Perot (SFP) bandpass filter used to wavelength-multiplex multiple gratings in a single fiber, and an unbalanced Mach-Zehnder fibre interferometer made with a 3×3 coupler to detect strain-induced wavelength shifts. A passive technique for interferometer drift compensation using non-sensing FBGs is included in the system. A complete prototype system interrogates four gratings in a single fiber at a Nyquist sampling rate up to 10 kHz, with a noise floor measured near 4 n&egr; Hz−1/2 above 0.1 Hz. The inclusion of the interferometer drift compensation technique is shown to make quasi-static measurements feasible.

Abstract translation: 公开了一种包含光纤布拉格光栅，扫描带通滤波器，干涉仪和多个光电探测器的新型光学感测装置。 本发明还描述了用于光纤布拉格光栅（FBG）传感器询问和复用的新系统和方法。 新系统结合了用于在单个光纤中波长复用多个光栅的扫描法布里 - 珀罗（SFP）带通滤波器和用3x3耦合器制成的不平衡马赫 - 曾德尔光纤干涉仪，以检测应变诱发的波长漂移。 系统中包含使用非感应FBG的干涉仪漂移补偿的被动技术。 完整的原型系统以高达10 kHz的奈奎斯特采样率在单根光纤中询问四个光栅，噪声基底在0.1赫兹附近测得。 显示了包含干涉仪漂移补偿技术，使准静态测量成为可能。

公开(公告)号：US20020146204A1

公开(公告)日：2002-10-10

申请号：US10082290

申请日：2002-02-26

Inventor： David W. Gerdt ,  Martin C. Baruch ,  Charles Adkins

IPC: G02B006/26 ,  G01N021/85

CPC classification number: G01L1/243 ,  A61B5/024 ,  A61B5/0816 ,  A61B5/681 ,  A61B2562/0233 ,  A61B2562/146 ,  A61B2562/168 ,  G01D5/35345 ,  G02B6/2856

Abstract: A fiberoptic sensing apparatus comprises a fiberoptic coupler in which a plurality of optical fibers are joined through a fused coupling region, the optical fibers including at least one input optical fiber and a plurality of output optical fibers, the fiberoptic coupler distributing light incident to the input optical fiber among the plurality of output optical fibers. The coupler is mounted to a support member and configured such that at least a portion of the coupling region can be deflected to change the light distribution among the output fibers without putting the coupling region under tension. A fluid column is cooperative with a deflection member disposed to deflect the portion of the coupling region.

Abstract translation: 光纤感测装置包括光纤耦合器，其中多个光纤通过熔接耦合区域接合，光纤包括至少一个输入光纤和多个输出光纤，光纤耦合器分配入射到输入端的光 多个输出光纤之间的光纤。 耦合器安装到支撑构件并且构造成使得耦合区域的至少一部分可以被偏转以改变输出光纤之间的光分布，而不会使耦合区域处于张力下。 流体柱与设置成偏转联接区域的部分的偏转构件协作。

公开(公告)号：US5942750A

公开(公告)日：1999-08-24

申请号：US849951

申请日：1997-09-16

Applicant: Vidar Sannerhaugen ,  Sten Hellvik

Inventor： Vidar Sannerhaugen ,  Sten Hellvik

IPC: G01D5/26 ,  G01B11/16 ,  G01D1/18 ,  G01D5/353 ,  G01L1/24 ,  G01M11/08 ,  G01M99/00 ,  H01J5/16

CPC classification number: G01M11/086 ,  G01B11/18 ,  G01D5/35383 ,  G01L1/242 ,  G01L1/243 ,  G01L1/245 ,  G01L1/246 ,  G01L1/247

Abstract: For continuous monitoring of dynamic loads, including stresses and strains in large hull structures for vessels (5), a strain measurement system (2) is employed with fiber optic cables which connect optical strain sensors (7; 16) at different points in the hull structure. Optical signals for detection of stresses and strains are distributed to the strain sensors (7; 16) from an optical transmitter (11). The strain measurement system (2) is connected via a central monitoring unit (10) to a computer-implemented control system (1) which in turn is connected to a display and data presentation unit (4) and possibly other measurement systems (3). In a first operating mode, strain values during loading and unloading of the vessel (5) are detected by the strain sensors (7; 16). The control system (1) generates a curve which shows an average strain, and an alarm signal if the average strain exceeds a predetermined threshold which indicates an unacceptable level of strain. In a second operating mode, when the vessel (5) is underway, strains are continuously detected by the strain sensors (7; 16). An alarm signal is generated if the average strain exceeds a predetermined threshold which indicates an unacceptable level of strain. A strain measurement system and a fiber optic strain sensor (16) are also used with this method.

Abstract translation: PCT No.PCT / NO95 / 00234 Sec。 371日期：1997年9月16日 102（e）日期1997年9月16日PCT 1995年12月15日PCT PCT。 公开号WO96 / 18866 日期1996年6月20日为了连续监测动态载荷，包括船体大型船体结构中的应力和应变（5），应变测量系统（2）用于将光学应变传感器（7; 16）连接到 船体结构中的不同点。 用于检测应力和应变的光信号从光发射器（11）分配到应变传感器（7; 16）。 应变测量系统（2）经由中央监控单元（10）连接到计算机实现的控制系统（1），该控制系统又连接到显示器和数据呈现单元（4）以及可能的其他测量系统（3） 。 在第一操作模式中，容器（5）的装载和卸载期间的应变值由应变传感器（7; 16）检测。 控制系统（1）产生显示平均应变的曲线，如果平均应变超过表示不可接受的应变水平的预定阈值，则产生报警信号。 在第二操作模式中，当容器（5）正在进行时，应变传感器（7; 16）连续检测应变。 如果平均应变超过指示不可接受的应变水平的预定阈值，则产生报警信号。 该方法也使用应变测量系统和光纤应变传感器（16）。

公开(公告)号：US5589937A

公开(公告)日：1996-12-31

申请号：US434366

申请日：1995-05-02

Applicant: Michael R. Brininstool

Inventor： Michael R. Brininstool

IPC: G01D5/353 ,  G01L1/24 ,  G01B9/02

CPC classification number: G01L1/247 ,  G01D5/35335 ,  G01D5/35348 ,  G01L1/243

Abstract: A fiber optic sensor system includes a first optical power source which icts a light pulse into an optical fiber loop system. The light pulse circulates in the optical fiber loop system at a circulation frequency. The optical fiber loop system includes a transducer which modulates the circulation frequency in response to detecting a changing physical condition, a filter, polarization controller, an isolator, and an optical fiber gain medium for amplifying the light pulse. A second optical power source provides optical energy to the optical fiber gain medium. A detector system transforms a portion of the light pulse received from the optical fiber loop system into an output signal representing the circulation frequency.

Abstract translation: 光纤传感器系统包括将光脉冲注入到光纤环路系统中的第一光功率源。 光脉冲以循环频率在光纤回路系统中循环。 光纤回路系统包括响应于检测到变化的物理条件来调节循环频率的换能器，滤波器，偏振控制器，隔离器和用于放大光脉冲的光纤增益介质。 第二光功率源向光纤增益介质提供光能。 检测器系统将从光纤环路系统接收的光脉冲的一部分变换成表示循​​环频率的输出信号。

公开(公告)号：US5485480A

公开(公告)日：1996-01-16

申请号：US187293

申请日：1994-03-25

Applicant: Marcos Y. Kleinerman

Inventor： Marcos Y. Kleinerman

IPC: A61B17/00 ,  G01D5/353 ,  G01J5/08 ,  G01J5/52 ,  G01K11/32 ,  G01L1/24 ,  G06F3/033 ,  G06F3/041 ,  G06F3/042 ,  H01S3/30 ,  G02B6/22 ,  H01S3/091

CPC classification number: G06F3/041 ,  G01D5/35358 ,  G01D5/3538 ,  G01J5/08 ,  G01J5/0818 ,  G01J5/0821 ,  G01J5/0896 ,  G01J5/52 ,  G01J5/602 ,  G01K11/32 ,  G01K11/3213 ,  G01L1/243 ,  G06F3/0414 ,  G06F3/042 ,  A61B2017/00084 ,  G01J5/0025 ,  G06F2203/04109

Abstract: A fiber optical source of stimulated optical radiation comprises an optical fiber which includes a core doped with laser material having optical gain in two wavelength regions, the fiber additionally including a material in optical communication with said laser material in such a manner as to absorb radiation emitted from said laser material within one of said wavelength regions.

Abstract translation: 受激光辐射的光纤光源包括光纤，其包括掺杂有在两个波长区域具有光学增益的激光材料的芯，该光纤还包括与所述激光材料光学连通的材料，以吸收辐射的辐射 来自所述波长区域之一内的所述激光材料。