公开(公告)号：US20040104337A1

公开(公告)日：2004-06-03

申请号：US10717657

申请日：2003-11-21

Applicant: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY

Inventor： Hiroshi Tsuda

IPC: G01J001/04 ,  G01J005/08

CPC classification number: G01M11/083 ,  G01B11/165 ,  G01D5/35316 ,  G01L1/246

Abstract: To provide an optical fiber strain sensor device and a strain detection method, for measuring precisely AE and for detecting effectively a rapid strain change due to a shock load, an optical fiber strain sensor device includes an FBG sensor mounted on an object to be measured, a broadband light source for directing a broadband wavelength light ray to the FBG sensor, and an FBG filter that reflects or transmits a light ray reflected from the FBG sensor, and, using the FBG filter, the optical fiber strain sensor device processes and detects a change in the center wavelength of the light ray that has been incident from the broadband light source and then has been reflected from the FBG sensor.

Abstract translation: 为了提供光纤应变传感器装置和应变检测方法，为了精确地测量AE并且有效地检测由于冲击负载引起的快速应变变化，光纤应变传感器装置包括安装在被测量物体上的FBG传感器， 用于将宽带波长光线引导到FBG传感器的宽带光源和反射或透射从FBG传感器反射的光线的FBG滤光器，并且使用FBG滤光器，光纤应变传感器装置处理并检测 改变从宽带光源入射的光线的中心波长，然后从FBG传感器反射。

公开(公告)号：US20040031911A1

公开(公告)日：2004-02-19

申请号：US10446143

申请日：2003-05-28

Inventor： Frank Hoffmann ,  Robert Schmidt

IPC: G01J005/08

CPC classification number: F16K31/0679 ,  F01L9/04 ,  F01L2009/0409 ,  F16K37/0041

Abstract: A device having an electromagnetic actuator for actuating a control element, in particular a charge cycle valve of an internal combustion engine. The actuator includes at least one elastic element, for example, a valve spring, provided for the purpose of elastic deformation. The elastic element is connected to a deformation sensor providing a signal making it possible to determine the deformation of the elastic element, and to determine the position of the control element.

Abstract translation: 具有用于致动控制元件的电磁致动器的装置，特别是内燃机的充电循环阀。 致动器包括为了弹性变形而设置的至少一个弹性元件，例如阀弹簧。 弹性元件连接到变形传感器，其提供信号，使得可以确定弹性元件的变形并确定控制元件的位置。

公开(公告)号：US20030209655A1

公开(公告)日：2003-11-13

申请号：US10431456

申请日：2003-05-08

Inventor： Anbo Wang

IPC: G01J001/04 ,  G01J005/08

CPC classification number: G01L1/246 ,  G01D5/35345 ,  G01D5/35377 ,  G02B6/02071

Abstract: A optical fiber sensor for measuring temperature and/or pressure employs temporally created long period gratings. The gratings may be produced by a periodic change in the refractive index of the fiber along the fiber longitudinal axis caused by periodically spaced compressive and/or expansive forces or by spaced-apart unbalanced forces that cause periodic fiber micro-bending. Pressure and temperature are determined by measuring changes in both the wavelength at which light is coupled from a mode guided by a core to a different mode and an amount of such coupling. The gratings are created intrinsically and extrinsically. Single and multiple core fibers are used.

Abstract translation: 用于测量温度和/或压力的光纤传感器采用暂时创建的长周期光栅。 可以通过由周期性间隔的压缩和/或膨胀力或通过引起周期性纤维微弯曲的间隔不平衡的力沿着纤维纵向轴线的纤维的折射率的周期性变化来产生光栅。 通过测量从芯引导的模式到不同模式的光耦合的波长和这种耦合的量的变化来确定压力和温度。 光栅是内在和外在的。 使用单芯和多芯纤维。

公开(公告)号：US20030185275A1

公开(公告)日：2003-10-02

申请号：US10296971

申请日：2003-05-27

Inventor： Claus Peter Renschen ,  Ulf Roland

IPC: G01J005/08

CPC classification number: G01K11/3206 ,  G01D5/268

Abstract: The invention relates to a process and an arrangement for temperature measurement by means of optical detection of energy band gaps of solids with electrical light sources, measurement probes and a wavelength-sensitive detection system that measures the frequency of the light guided back by the measurement probe. The object of the invention to devise a process and a device with which the disadvantages of the prior art are avoided and with which the measurement accuracy, the possible length of the measurement probes, the measurement speed and flexibility can be increased in multichannel measurement arrangements, is achieved by a process for measurement of temperatures by means of optical detection of energy band gaps of solids with electrical light sources, measurement probes and a wavelength-sensitive detection system that measures the frequency of the light guided back by the measurement probe, from a number of at least two light sources by means of a control unit, one or more light sources are turned on over defined time intervals, the light emitted by the light sources that have been turned on being routed, via the optical fibers assigned to the respective light source, to a solid-state sensor assigned to the light source in which the optical signal is modified depending on temperature, the modified optical signal being routed via optical fibers to an optical mixer, in which the modified optical signals of all solid-state sensors are combined, and the resulting optical signal being routed from the mixer to an optical detection system, in which the spectral properties of the optical signal are converted with time resolution into electrical signals, and from the time-resolved electrical signals, an evaluation unit calculating one or more temperatures that are assigned to the light sources and to the associate solid-state sensors (measurement channels).

公开(公告)号：US20030185274A1

公开(公告)日：2003-10-02

申请号：US10108593

申请日：2002-03-28

Inventor： Nahar Singh ,  Subhash Chander Jain ,  Anil Kumar Aggarwal

IPC: G01J005/08

CPC classification number: G01K11/3206 ,  G01K11/18 ,  G01K11/3213

Abstract: The present invention provides an intensity modulated optical fiber temperature switching immersion probe for remote temperature monitoring and switching of an industrial process. The present invention also provides a method for remote sensing of temperature.

Abstract translation: 本发明提供一种用于工业过程的远程温度监测和切换的强度调制光纤温度切换浸没式探针。 本发明还提供一种用于遥感温度的方法。

公开(公告)号：US20030160148A1

公开(公告)日：2003-08-28

申请号：US10394796

申请日：2003-03-21

Applicant: California Institute of Technology

Inventor： Xiaotian Steve Yao ,  Lutfollah Maleki ,  Vladimir Ilchenko

IPC: G01J001/32 ,  G01J001/04 ,  G01J001/42 ,  G01J005/08 ,  G02F001/03 ,  G02F001/07

CPC classification number: H01S5/0683 ,  H01S5/1032

Abstract: Systems and techniques of incorporating an optical resonator in an optical part of a feedback loop in opto-electronic oscillators. This optical resonator provides a sufficiently long energy storage time and hence to produce an oscillation of a narrow linewidth and low phase noise. Certain mode matching conditions are required. For example, the mode spacing of the optical resonator is equal to one mode spacing, or a multiplicity of the mode spacing, of an opto-electronic feedback loop that receives a modulated optical signal and to produce an electrical oscillating signal.

公开(公告)号：US20030133490A1

公开(公告)日：2003-07-17

申请号：US10276944

申请日：2002-11-18

Inventor： Norbert Grote ,  Georges Przyrembel ,  Huihai Vao

IPC: G01J005/08

CPC classification number: G02F1/3132 ,  G02F1/0147 ,  G02F1/065 ,  G02F2201/302 ,  G02F2202/022

Abstract: The invention relates to a tuneable optical grid-assisted add/drop filter in codirectional mode of operation, which has the structure of a directional coupler filter with at least two adjacent waveguides having different refractive indices. The inventive filter must exhibit a spectral bandwidth of the filter transmission curve in the range from 50 GHz to 400 GHz for a high resolution in order to be tuneable and it must be producible in a more straightforward and more cost-effective manner, with dimensional tolerances higher than those of InP based add/drop filters. For that purpose, the material of the two waveguides is composed of two different classes of materials having different optical parameters. The thermal refraction index coefficient dn/dT, the electro-optic coefficient dn/dE or the dispersion dn/dnull of these two materials differentiate from each other in such a way that, in case of an action carried out upon the two waveguides with the same technical means with a view to changing the temperature, the electric field or the wavelength, effects with different strength occur and therefore, means for changing these parameters are provided. A polymer and silica are used as wave guide materials arranged vertically or horizontally relative to each other. For changing the optical parameter dn/dT, a device for modifying the temperature is used to influence the whole surface of a chip which contains the filter, said device being possibly identical to a device fore stabilizing the chip temperature.

Abstract translation: 本发明涉及同向操作模式的可调光学网格辅助加/减滤波器，其具有具有至少两个具有不同折射率的相邻波导的定向耦合器滤波器的结构。 本发明的滤波器必须在50GHz至400GHz的范围内呈现出高分辨率的滤波器传输曲线的频谱带宽，以便可调谐，并且必须以更直接和更具成本效益的方式产生尺寸公差 高于基于InP的添加/删除过滤器。 为此，两个波导的材料由具有不同光学参数的两种不同类型的材料组成。 这两种材料的热折射系数dn / dT，电光系数dn / dE或分散体dn / dlambd以这样一种方式彼此区分，使得在两个波导上进行动作的情况下， 为了改变温度，电场或波长，出现了具有不同强度的效果的相同的技术手段，因此提供了改变这些参数的手段。 使用聚合物和二氧化硅作为相对于彼此垂直或水平布置的波导材料。 为了改变光学参数dn / dT，用于改变温度的装置用于影响包含滤光片的芯片的整个表面，所述装置可能与稳定芯片温度的装置相同。

公开(公告)号：US20030042407A1

公开(公告)日：2003-03-06

申请号：US09944276

申请日：2001-08-31

Applicant: International Business Machines Corporation

Inventor： Lawrence Jacobowitz ,  Casimer Maurice DeCusatis

IPC: G01J001/04 ,  G01J005/08

CPC classification number: H04B10/572

Abstract: A system and method for automatically attenuating optical signals transmitted in optical systems. The system and method exploits a wavelength-locked loop servo-control circuit and methodology that enables real time mutual alignment of the center wavelength of an optical signal having a peaked spectrum function and transmitted through the optical system, and a center wavelength of a wavelength selective device such as an optical filter element implementing a peaked passband function. The wavelength-locked loop servo-control circuit and methodology particularly is capable of real-time aligning the center wavelength of an optical signal in a range between maximum overlap with the center wavelength of the peaked passband function of the optical filter for maximum transfer of output optical signal by the filter element and minimum overlap with the peaked passband function of the optical filter so that output optical signal may be attenuated in the optical system.

Abstract translation: 一种用于自动衰减在光学系统中传输的光信号的系统和方法。 该系统和方法利用了一种波长锁定环路伺服控制电路和方法，使得具有峰值频谱功能的光信号的中心波长的实时相互对准并通过光学系统传输，并且具有波长选择性的中心波长 器件，例如实现峰值通带功能的滤光元件。 波长锁定环伺服控制电路和方法特别能够将光信号的中心波长在与滤光片的峰值通带功能的中心波长最大重叠的范围内实时对齐，以最大限度地传输输出 通过滤波器元件的光信号，并且与光滤波器的峰值通带功能最小重叠，使得输出光信号可以在光学系统中衰减。

公开(公告)号：US20020088931A1

公开(公告)日：2002-07-11

申请号：US09757698

申请日：2001-01-11

Inventor： Lee Allan Danisch ,  Jonathan Freeman Danisch ,  Jordan Patrick Lutes

IPC: G01J005/08

CPC classification number: G01D5/268 ,  G01B11/18 ,  G01D5/35383

Abstract: A measuring device for providing data corresponding to a geometric configuration in space, in the form of a flexible, compliant, measurement member capable of bending in at least one degree of freedom and extending along a medial axis or plane. The member has spaced flexure sensors distributed at known locations on the member and separated by known sensor spacing intervals to provide flexure signals indicating the local state of flexure present at the locations. The member comprises a multiplicity of formed, i.e. shaped, fibers, these fibers including sensing fibers having sensing portions which provide the flexure sensors, the sensing portions of different fibers being located at differing distances along the member so as to be located at the sensor spacing intervals, the formed fibers being in mutually supporting relationship, as by continuous or repeated contact with each other. Such fibers may constitute most or all of the member.

Abstract translation: 一种测量装置，用于提供对应于空间中的几何构型的数据，其形式为柔性的柔性测量构件，该测量构件能够以至少一个自由度弯曲并且沿着中间轴线或平面延伸。 该构件具有分布在构件上的已知位置处的间隔的挠曲传感器，并且通过已知的传感器间隔间隔分开，以提供指示位置处存在的局部弯曲状态的挠曲信号。 该构件包括多个形成的，即成形的纤维，这些纤维包括具有感测部分的感测纤维，其具有提供挠曲传感器，不同纤维的感测部分沿着构件位于不同的距离处，以便位于传感器间隔 间隔，形成的纤维处于相互支撑的关系中，通过彼此连续或重复接触。 这种纤维可以构成该构件的大部分或全部。

公开(公告)号：US20020050561A1

公开(公告)日：2002-05-02

申请号：US09990201

申请日：2001-11-20

Inventor： Paul Heremans ,  Gustaaf Borghs ,  Maarten Kuijk ,  Roger Vounckx

IPC: G01J001/04 ,  G01J005/08

CPC classification number: H01L33/025 ,  G02B6/4224 ,  G02B6/4249 ,  G02B6/4292 ,  H01L27/156 ,  H01L33/08 ,  H01L33/20 ,  H01L33/30

Abstract: It is an object of the present invention to disclose a socket that is easy in use for optoelectrical interconnection. The socket of the invention can be handled as a compact device that allows the interconnection between electrical signals and external apparatus for transmitting the optical signals, preferably via a high density of optical channels. The socket of the invention has features and markers for attachment and alignment of optical transfer media such as optical fibers, optical fiber bundles and optical imaging fiber bundles. The alignment features and markers allow to align the optical transfer media to the connection for electrical signals. The markers can be integrated in or can be provided on a fiber optic face plate substrate forming part of the socket.

Abstract translation: 本发明的目的是公开一种容易用于光电互连的插座。 本发明的插座可以作为紧凑的装置来处理，其允许电信号和外部装置之间的互连用于传输光信号，优选通过高密度的光通道。 本发明的插座具有用于光学传输介质如光纤，光纤束和光学成像光纤束的附着和对准的特征和标记。 对准特征和标记允许将光学传输介质对准用于电信号的连接。 标记可以集成在形成插座的一部分的光纤面板基板上或可以被提供。