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1. 发明授权

US11708760B2 Immersed lens downhole refractometer 有权
$Immersed lens downhole refractometer$
公开(公告)号：US11708760B2
公开(公告)日：2023-07-25
申请号：US16815410
申请日：2020-03-11
申请人： Baker Hughes Oilfield Operations LLC
发明人： Rocco DiFoggio , Helene C. Climent
IPC分类号： G01N21/43 , E21B49/08 , G01N33/28 , G01N21/41
CPC分类号： E21B49/08 , G01N21/4133 , G01N21/431 , G01N33/2823 , G01N2021/432 , G01N2201/0833
摘要： An apparatus for detecting one or more properties of a downhole fluid includes a housing. The apparatus also includes a location-sensitive optical detector, arranged within a chamber formed by the housing. The apparatus further includes a light source, arranged within the chamber. The apparatus also includes a lens, positioned at an end of the housing, the lens preferably having a flat side and a curved side, the flat side positioned proximate the chamber to position the flat side closer to the light source than the curved side. The apparatus further includes a mirror, arranged outside the housing.

2. 发明授权

US10018558B2 Distributed acoustic sensing in a multicore optical fiber using distributed mode coupling, delay, and simultaneous pulsing with selectable spatial modes 有权
公开(公告)号：US10018558B2
公开(公告)日：2018-07-10
申请号：US15678728
申请日：2017-08-16
申请人： NEC Laboratories America, Inc.
发明人： Fatih Yaman , Giovanni Milione , Shaoliang Zhang , Yue-Kai Huang
IPC分类号： G01N21/47 , G02B6/02 , G01K11/32 , G01N21/43 , G01N21/17 , G01N21/63
CPC分类号： G01N21/47 , G01H9/004 , G01K11/32 , G01M11/083 , G01M11/085 , G01N2021/1744 , G01N2021/432 , G01N2021/638 , G02B6/02042
摘要： A system and method are provided for distributed acoustic sensing in a multicore optical fiber. The system includes a transmitter for simultaneously propagating a sequence of M light pulses through the multicore optical fiber using a spatial mode selected from a set of N spatial modes provided by a spatial mode selector for the transmitter that is coupled to an input to the multicore optical fiber, with M and N being respective integers greater than one. The system further includes a receiver for receiving the sequence of M light pulses at an output of the multicore optical fiber and detecting an environmental perturbation in the multicore optical fiber based on an evaluation of a propagation of the sequence of M light pulses through the multicore optical fiber.

3. 发明申请

US20180052041A1 DISTRIBUTED ACOUSTIC SENSING IN A MULTIMODE OPTICAL FIBER USING DISTRIBUTED MODE COUPLING AND DELAY 审中-公开
公开(公告)号：US20180052041A1
公开(公告)日：2018-02-22
申请号：US15678656
申请日：2017-08-16
申请人： NEC Laboratories America, Inc.
发明人： Fatih Yaman , Giovanni Milione , Shaoliang Zhang , Yue-Kai Huang
IPC分类号： G01H9/00
CPC分类号： G01N21/47 , G01H9/004 , G01K11/32 , G01M11/083 , G01M11/085 , G01N2021/1744 , G01N2021/432 , G01N2021/638 , G02B6/02042
摘要： A system and method are provided for distributed acoustic sensing in a multimode optical fiber. The system includes a transmitter for simultaneously propagating a sequence of M light pulses through the multimode optical fiber using a spatial mode selected from a set of N spatial modes provided by a spatial mode selector for the transmitter that is coupled to an input to the multimode optical fiber, with M and N being respective integers greater than one. The system further includes a receiver for receiving the sequence of M light pulses at an output of the multimode optical fiber and detecting an environmental perturbation in the multimode optical fiber based on an evaluation of a propagation of the sequence of M light pulses through the multimode optical fiber.

4. 发明申请

US20060227331A1 Method and apparatus for measuring and monitoring optical properties based on a ring-resonator 失效
标题翻译：基于环形谐振器测量和监测光学特性的方法和装置
公开(公告)号：US20060227331A1
公开(公告)日：2006-10-12
申请号：US11398608
申请日：2006-04-06
申请人： Frank Vollmer , Peer Fischer
发明人： Frank Vollmer , Peer Fischer
IPC分类号： G01B9/02
CPC分类号： G01N21/553 , G01N21/05 , G01N21/23 , G01N21/39 , G01N21/45 , G01N21/7746 , G01N2021/0346 , G01N2021/432 , G01N2021/7789 , G02B2006/1213
摘要： A method and apparatus for performing refractive index, birefringence and optical activity measurements of a material such as a solid, liquid, gas or thin film is disclosed. The method and apparatus can also be used to measure the properties of a reflecting surface. The disclosed apparatus has an optical ring-resonator in the form of a fiber-loop resonator, or a race-track resonator, or any waveguide-ring or other structure with a closed optical path that constitutes a cavity. A sample is introduced into the optical path of the resonator such that the light in the resonator is transmitted through the sample and relative and/or absolute shifts of the resonance frequencies or changes of the characteristics of the transmission spectrum are observed. A change in the transfer characteristics of the resonant ring, such as a shift of the resonance frequency, is related to a sample's refractive index (refractive indices) and/or change thereof. In the case of birefringence measurements, rings that have modes with two (quasi)-orthogonal (linear or circular) polarization states are used to observe the relative shifts of the resonance frequencies. A reflecting surface may be introduced in a ring resonator. The reflecting surface can be raster-scanned for the purpose of height-profiling surface features. A surface plasmon resonance may be excited and phase changes of resonant light due to binding of analytes to the reflecting surface can be determined in the frequency domain.
摘要翻译：公开了一种用于对诸如固体，液体，气体或薄膜的材料进行折射率，双折射和光学活性测量的方法和装置。该方法和装置也可用于测量反射表面的性质。所公开的装置具有光纤环路谐振器或赛道轨道谐振器形式的光环形谐振器，或具有构成空腔的闭合光路的任何波导环或其它结构。将样品引入谐振器的光路中，使得谐振器中的光透射通过样品，并且观察到谐振频率的相对和/或绝对偏移或透射光谱的特性的变化。谐振环的传递特性的变化，例如共振频率的偏移，与样品的折射率（折射率）和/或其变化有关。在双折射测量的情况下，使用具有两个（准） - 正交（线性或圆形）偏振态的模式的环观察共振频率的相对移动。可以在环形谐振器中引入反射表面。为了高度分布表面特征的目的，可以对反射表面进行光栅扫描。可以激发表面等离子体共振，并且可以在频域中确定由于分析物与反射表面的结合而引起的共振光的相变。

5. 发明授权

US4988863A Optical fiber refractometer launching light at a non-zero launch angle 失效
$Optical fiber refractometer launching light at a non-zero launch angle$
标题翻译：光纤折射仪以非零发射角发射光
公开(公告)号：US4988863A
公开(公告)日：1991-01-29
申请号：US460436
申请日：1990-01-03
申请人： Lloyd C. Bobb , Howard D. Krumboltz
发明人： Lloyd C. Bobb , Howard D. Krumboltz
IPC分类号： G01N21/43
CPC分类号： G01N21/431 , G01N2021/432
摘要： The index of refraction of a liquid is measured using an optical fiber rectometer having a light transmitting optical fiber by immersing a portion of the optical fiber in the liquid and launching light into one end of the optical fiber at a selected non-zero launch angle with respect to the fiber axis. Light transmitted through the optical fiber is detected at the other end of the optical fiber and a determination is made of the index of refraction of the liquid in accordance with the detected light and the selected non-zero launch angle. By varying the launching angles of the light the range of the refractometer is increased. The light transmitting optical fiber is provided with a region having at least one tapered portion for further increasing the range of the refractometer. The tapered portion of the optical fiber is disposed between a refractive end of the optical fiber and the light source for providing single-ended operation.
摘要翻译：使用具有透光光纤的光纤折射计，通过将光纤的一部分浸入液体中并以选定的非零发射角将光发射到光纤的一端，测量液体的折射率，相对于纤维轴。在光纤的另一端检测透过光纤的光，并根据检测到的光和所选的非零发射角确定液体的折射率。通过改变光的发射角度，折射计的范围增加。光传输光纤设置有具有至少一个锥形部分的区域，用于进一步增加折射计的范围。光纤的锥形部分设置在光纤的折射端和用于提供单端操作的光源之间。

6. 发明授权

US4827121A System for detecting chemical changes in materials by embedding in materials an unclad fiber optic sensor section 失效
标题翻译：通过嵌入材料中的未包覆的光纤传感器部分来检测材料的化学变化的系统
公开(公告)号：US4827121A
公开(公告)日：1989-05-02
申请号：US159154
申请日：1988-02-24
申请人： Warren D. Vidrine, Jr. , Mark S. Roth
发明人： Warren D. Vidrine, Jr. , Mark S. Roth
IPC分类号： G01N21/27 , G01N21/35 , G01N21/43 , G01N21/55 , G01N21/41
CPC分类号： G01N21/552 , G01N2021/3595 , G01N2021/432
摘要： A system for detecting chemical characteristics within a material includes an optical fiber having a relatively short unclad sensor section for embedding in a material, a source of infrared radiation to direct infrared radiation into the fiber, and an optical decoder connected to the fiber to detect the spectrum of infrared radiation absorbed by the material in which the sensor section is embedded.

7. 发明授权

US09581542B2 Device for detecting the concentration of a solution 有权
标题翻译：用于检测溶液浓度的装置
公开(公告)号：US09581542B2
公开(公告)日：2017-02-28
申请号：US14661943
申请日：2015-03-18
申请人： SIGMAR S.R.L.
发明人： Osvaldo Salvatore
IPC分类号： G01N21/00 , G01N21/27 , G01N21/59 , G01N21/25 , G01N21/43 , G01N21/85
CPC分类号： G01N21/27 , F01N2560/12 , F01N2610/02 , F01N2900/1806 , F01N2900/1818 , G01N21/255 , G01N21/431 , G01N21/59 , G01N21/8507 , G01N2021/432 , G01N2201/0621 , G01N2201/0627
摘要： A device for detecting the concentration of a given component in a solution, preferably the concentration of urea in solution with water includes a means for emitting radiation, at least one means for receiving radiation, which is prearranged for determining at least one characteristic of the radiation, and a light guide, which is prearranged for optically connecting the emitting means to the receiving means, wherein the light guide has at least one surface that is to come into contact with the solution so as to determine an interface of separation between the propagation medium and the solution. Control means are configured for obtaining a value indicating the concentration of the compound in the solution as a function of the signal coming from the receiving means.
摘要翻译：用于检测溶液中给定组分的浓度的装置，优选地，用水溶液中的尿素浓度包括用于发射辐射的装置，用于接收辐射的至少一种装置，其被预先设置用于确定辐射的至少一种特性以及导光板，其被布置用于将发射装置光学地连接到接收装置，其中光导具有至少一个与溶液接触的表面，以便确定传播介质之间的间隔界面和解决方案。控制装置被配置为根据来自接收装置的信号获得指示溶液中化合物的浓度的值。

8. 发明授权

US08731342B2 Fiber-optic sensor for liquid-immersion detection and fiber-optic detection system for liquid-immersion detection 有权
标题翻译：液浸探测用光纤传感器和液浸检测光纤检测系统
公开(公告)号：US08731342B2
公开(公告)日：2014-05-20
申请号：US13287107
申请日：2011-11-01
申请人： Chun-Liang Yang , Hsuan-Hung Lin
发明人： Chun-Liang Yang , Hsuan-Hung Lin
IPC分类号： G02B6/00
CPC分类号： G01M3/047 , G01N21/552 , G01N2021/432 , G02B6/262 , H04B10/0771
摘要： A fiber-optic sensor for liquid-immersion detection includes an optical fiber and an interface material layer. The optical fiber has an angled physical contact (APC) surface. The interface material layer contacts with the APC surface. The interface material layer has a rough surface when in a dry state to produce a diffusion reflection. The interface material layer has a smooth surface to produce a specular reflection when the interface material layer absorbs a liquid in a wet state.
摘要翻译：用于液浸检测的光纤传感器包括光纤和界面材料层。光纤具有倾斜的物理接触（APC）表面。界面材料层与APC表面接触。当处于干燥状态时，界面材料层具有粗糙的表面以产生扩散反射。当界面材料层在潮湿状态下吸收液体时，界面材料层具有光滑的表面以产生镜面反射。

9. 发明申请

US20100208243A1 OPTICAL SENSING SYSTEM FOR LIQUID FUELS 失效
标题翻译：液体燃料光学传感系统
公开(公告)号：US20100208243A1
公开(公告)日：2010-08-19
申请号：US12672202
申请日：2008-08-06
申请人： Carlos Kenichi Suzuki , Edmilton Gusken , Allan Caro Mercado , Eric Fujiwara , Eduardo Ono
发明人： Carlos Kenichi Suzuki , Edmilton Gusken , Allan Caro Mercado , Eric Fujiwara , Eduardo Ono
IPC分类号： G01N21/41
CPC分类号： G01N21/431 , G01N33/2852 , G01N2021/414 , G01N2021/432 , G01N2201/1211
摘要： The present invention relates to a thermally compensated optical sensing system for identifying various types of liquid fuels and/or the ratio in liquid fuel mixtures on real time. In this system, an optical fiber is used as a light guide and a sensor device for determining the refractive index of liquid fuels through the principle of reflectivity. Starting from a light source, light is transmitted interiorly of the optical fiber to the test probe which is in contact with the fuel. The optical signal resulting from the interaction between light and fuel is a function of refractive indexes of the optical fiber and the fuel, the wavelength of light used, and the fuel temperature. The system proposed herein relates to the use of this optical system in liquid fuels by using optical fibers having suitable refractive indexes as a function of the fuel type and/or fuel mixture being analyzed, allowing the sensitivity of the optical system to be optimized according to application requirements.
摘要翻译：本发明涉及用于实时识别液体燃料和/或液体燃料混合物的比例的热补偿光学感测系统。在该系统中，使用光纤作为光导和用于通过反射率原理确定液体燃料的折射率的传感器装置。从光源开始，光在光纤内部传输到与燃料接触的测试探针。由光和燃料之间的相互作用产生的光信号是光纤和燃料的折射率，所用光的波长和燃料温度的函数。本文提出的系统涉及通过使用具有适当折射率的光纤作为所分析的燃料类型和/或燃料混合物的函数的液体燃料中的这种光学系统的使用，从而允许光学系统的灵敏度根据应用要求。

10. 发明授权

US5394239A Spinal sensor with integrated optics to detect chemical substances 失效
标题翻译：具有集成光学检测化学物质的螺旋传感器
公开(公告)号：US5394239A
公开(公告)日：1995-02-28
申请号：US99221
申请日：1993-07-29
申请人： Serge Valette
发明人： Serge Valette
IPC分类号： G01N21/25 , G01N21/41 , G01N21/43 , G01N21/55 , G01N21/77 , G01N21/85 , G02B6/12 , G02B6/132 , G02B6/28 , G01B9/02
CPC分类号： G02B6/132 , G01N21/552 , G01N2021/432 , G01N2021/8578 , G01N21/85 , G02B2006/12038 , G02B2006/2865
摘要： The invention concerns a sensor with integrated optics, to detect chemical substances, including a double spiral interlaced with wave guides and integrated on a substrate (13) receiving the signal of a light source (14) through a first optical component (15) able to separate into two portions the light intensity emitted by the source and sending output signals onto at least one detector (17) through a second optical component (16), the first of the two guides (11) being a reference guide isolated from the influence of the substance to be measured, and the second (12) being a measuring guide affected by the substance to be measured.
摘要翻译：本发明涉及一种具有集成光学元件的传感器，用于检测化学物质，包括与波导交织的双螺旋并且集成在基板（13）上，该基板通过第一光学部件（15）接收光源（14）的信号，该第一光学部件能够将由光源发射的光强度分成两部分，并通过第二光学部件（16）将输出信号发送到至少一个检测器（17）上，两个引导件（11）中的第一个是与要测量的物质，第二（12）是受待测物质影响的测量指南。

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