公开(公告)号：EP2828622A1

公开(公告)日：2015-01-28

申请号：EP13711342.9

申请日：2013-03-19

Applicant: University of Limerick

Inventor： REINSCH, Thomas ,  BREMER, Kort ,  LEWIS, Elfed ,  LEEN, Gabriel ,  LOCHMANN, Steffen

IPC: G01D5/353

CPC classification number: G01N21/55 ,  G01D5/35312 ,  G01D5/35316 ,  G01K11/3206 ,  G01L1/246 ,  G01N21/29 ,  G01N21/4133 ,  G01N21/7703 ,  G01N2021/7763 ,  G01N2021/7776 ,  G01N2021/7786 ,  G01N2201/088

Abstract: A sensor (1) has a light conductor (2) having a grating (FBG), a cavity (5), and a transparent cavity end wall (4), a light emitter for directing light through the conductor, and a light detector for detecting reflected light, and a processor. The processor is adapted to analyse light reflected due to the grating (FBG, 6) to determine an indication of temperature, light reflected from the end (7) of the cavity (5) to determine an indication of pressure, and also light reflected from the outer surface (8) of the cavity wall (4) to determine an indication of refractive index of a medium outside said cavity wall. The processor may use one output to compensate another, for example pressure and temperature may be used to compensate for variation in refractive index.

公开(公告)号：EP2627966A1

公开(公告)日：2013-08-21

申请号：EP11832980.4

申请日：2011-09-21

Applicant: Fiber SenSys, Inc.

Inventor： TAPANES, Edward

IPC: G01B9/02

CPC classification number: G01B9/02041 ,  G01B9/02 ,  G01B9/02012 ,  G01B9/02027 ,  G01B9/02049 ,  G01B9/02079 ,  G01B2290/70 ,  G01D5/35306 ,  G01D5/35325 ,  G01D5/35329 ,  G01N21/8806 ,  G01N2201/0612 ,  G01N2201/088 ,  G02B6/255 ,  G02B6/36 ,  Y10T29/49826

Abstract: A fiber-optic sensor can have a Michelson sensor portion and a Mach-Zehnder sensor portion. A first splitter-coupler can be configured to split incoming light between a first fiber portion and a second fiber portion. A first polarization-phase conjugation device can be configured to conjugate a polarization phase of incident light corresponding to the first fiber portion, and a second polarization-phase conjugation device can be configured to conjugate a polarization phase of incident light corresponding to the second fiber portion. Each of the first and second polarization-phase conjugation devices can be configured to reflect light toward a detector and through the respective first and second fiber portions. A coupler can be configured to join light in the first fiber portion with light in the second fiber portion, and a third fiber portion can be configured to receive light from the coupler and to illuminate a second detector.

Abstract translation: 光纤传感器可以具有迈克尔逊传感器部分和马赫 - 曾德尔传感器部分。 第一分离器耦合器可以被配置为在第一光纤部分和第二光纤部分之间分离入射光。 第一偏振相位共轭装置可以被配置为将对应于第一光纤部分的入射光的偏振相位共轭，并且第二偏振相位共轭装置可以被配置为将对应于第二光纤部分的入射光的偏振相位共轭 。 第一和第二偏振相位共轭装置中的每一个可以被配置为将光朝向检测器反射并且通过相应的第一和第二光纤部分。 耦合器可以被配置为将第一光纤部分中的光与第二光纤部分中的光结合，并且第三光纤部分可以被配置为从耦合器接收光并照亮第二检测器。

公开(公告)号：EP2467697A1

公开(公告)日：2012-06-27

申请号：EP09848571.7

申请日：2009-08-21

Applicant: Halliburton Energy Services, Inc.

Inventor： JONES, Christopher, M.

IPC: G01N21/01

CPC classification number: G01N21/648 ,  B82Y15/00 ,  B82Y20/00 ,  E21B47/123 ,  G01N21/80 ,  G01N2021/6417 ,  G01N2021/6419 ,  G01N2021/6484 ,  G01N2201/08 ,  G01N2201/088 ,  G01V8/24 ,  Y10S977/954

Abstract: Apparatus, systems, and methods may operate to transmit energy to a nanofiber sampling coil and/or a nanofiber reference coil. Further activity may include receiving the energy as modified by evanescent interaction with a sampled material located proximate to the sampling coil and/or as modified by propagation through the reference coil, and comparing the energy modified by evanescent interaction with the energy modified by propagation through the reference coil to determine a spectroscopic property of the sampled material. Additional apparatus, systems, and methods, including the use of nanofibers and fluorescence induced by evanescent radiation to conduct spectroscopic analysis, are disclosed.

公开(公告)号：EP1200856A4

公开(公告)日：2003-04-02

申请号：EP00941797

申请日：2000-07-10

Applicant: UNIV SYDNEY

Inventor： CANNING JOHN

IPC: G01N21/27 ,  G01N21/77 ,  G02B6/00 ,  G02B6/02 ,  G02B6/12 ,  G02B6/122 ,  G02B6/28 ,  G02B6/293 ,  G02B6/30 ,  G02B6/34 ,  G02B5/28 ,  G02B6/16

CPC classification number: G02B6/02138 ,  B82Y20/00 ,  G01N21/774 ,  G01N2201/088 ,  G02B6/0208 ,  G02B6/12007 ,  G02B6/1225 ,  G02B6/2852 ,  G02B6/30 ,  G02B2006/12107

Abstract: An optical waveguide (1) has a grating structure (2) in which gratings of different orders are superimposed. When first and second order gratings are superimposed, input light is partially reflected by the first order component and partially coupled out of the waveguide by the second order component. The second order component can also be used to couple external light into the waveguide (1). The grating structure (2) has applications to free space couplers, optical sensors, and suppression of ripples in dispersion compensators.

公开(公告)号：US20240271969A1

公开(公告)日：2024-08-15

申请号：US18643002

申请日：2024-04-23

Applicant: NEC Corporation

Inventor： Yukihide Yoda ,  Yoshiaki Aono ,  Koji Asahi

IPC: G01D5/353 ,  G01N21/952

CPC classification number: G01D5/353 ,  G01N21/952 ,  G01N2201/088

Abstract: A utility pole deterioration detection system includes a cable (20) disposed in a utility pole (10), the cable (20) containing a communication optical fiber, a receiving unit (331) configured to receive an optical signal containing a pattern that changes according to a deterioration state of the utility pole (10) from at least one optical fiber contained in the cable (20), and a detection unit (332) configured to detect a deterioration state of the utility pole (10) based on the pattern.

公开(公告)号：US11994417B2

公开(公告)日：2024-05-28

申请号：US17270333

申请日：2019-04-23

Applicant: NEC Corporation

Inventor： Yukihide Yoda ,  Yoshiaki Aono ,  Koji Asahi

IPC: G01D5/353 ,  G01N21/952

CPC classification number: G01D5/353 ,  G01N21/952 ,  G01N2201/088

Abstract: A utility pole deterioration detection system includes a cable (20) disposed in a utility pole (10), the cable (20) containing a communication optical fiber, a receiving unit (331) configured to receive an optical signal containing a pattern that changes according to a deterioration state of the utility pole (10) from at least one optical fiber contained in the cable (20), and a detection unit (332) configured to detect a deterioration state of the utility pole (10) based on the pattern.

公开(公告)号：US11703636B2

公开(公告)日：2023-07-18

申请号：US17607086

申请日：2020-04-30

Applicant: National Research Council of Canada

Inventor： Jingwen Guan ,  Huimin Ding ,  Ping Lu ,  Stephen Mihailov ,  Benoit Simard

IPC: G02B6/02 ,  C03C25/1065 ,  C03C25/106 ,  C01B21/064 ,  C03C25/16 ,  G01N21/41

CPC classification number: G02B6/02395 ,  C01B21/0648 ,  C03C25/1061 ,  C03C25/1068 ,  C03C25/16 ,  G01N21/41 ,  G02B6/02076 ,  C01P2004/03 ,  C01P2004/13 ,  G01N2021/4166 ,  G01N2201/088

Abstract: A solution is provided comprising boron nitride nanotubes (BNNTs) in a liquid solvent. An optical waveguide, such as an optical fiber, is contacted with the solution so as to form a layer of the solution supported on at least a portion of the optical waveguide. The liquid solvent is then removed from the layer of the solution supported on the optical waveguide in order to form a coating of the BNNTs on the optical waveguide. Further provided is a BNNT coated optical waveguide for use as a sensor.

公开(公告)号：US20180188081A1

公开(公告)日：2018-07-05

申请号：US15850573

申请日：2017-12-21

Applicant: Endress+Hauser Conducta GmbH+Co. KG

Inventor： Matthias Altendorf ,  Detlev Wittmer

IPC: G01D5/353 ,  G01N21/27 ,  G01N21/25

CPC classification number: G01D5/35316 ,  G01N21/255 ,  G01N21/27 ,  G01N21/272 ,  G01N21/774 ,  G01N21/85 ,  G01N2021/0307 ,  G01N2021/7723 ,  G01N2021/8411 ,  G01N2201/088 ,  G02B6/4206 ,  G02B6/4246 ,  G02B6/4256

Abstract: A system for determining a process variable of a medium arranged in a container is disclosed, including an optical fiber Bragg sensor with an optical waveguide with a fiber Bragg grating, a signal generating unit designed to generate an optical input signal and couple it into the waveguide, a receiving unit designed to receive an optical output signal from the waveguide and converts it into an electrical output signal, and an evaluating unit which determines the process variable using the electrical output signal, wherein a subsection of the optical waveguide is arranged inside or in a wall of the container, the subsection designed such that the fiber Bragg grating is affected by the process variable to be determined of the medium.

公开(公告)号：US09983124B2

公开(公告)日：2018-05-29

申请号：US15019811

申请日：2016-02-09

Applicant: Oregon State University ,  U.S. Department of Energy

Inventor： Alan X. Wang ,  Chih-hung Chang ,  Ki-Joong Kim ,  Xinyuan Chong ,  Paul R. Ohodnicki

IPC: G01N21/35 ,  G01N21/3504 ,  G02B6/122 ,  G01N21/552 ,  B01J20/22 ,  G01N21/359 ,  G01N21/77 ,  B01J20/06 ,  B01J20/28 ,  G02B6/12

CPC classification number: G01N21/3504 ,  B01J20/06 ,  B01J20/226 ,  B01J20/28007 ,  B01J20/28097 ,  G01N21/359 ,  G01N21/554 ,  G01N21/7703 ,  G01N2021/7709 ,  G01N2021/7763 ,  G01N2201/088 ,  G02B6/1226 ,  G02B2006/12138

Abstract: Disclosed herein are embodiments of sensor devices comprising a sensing component able to determine the presence of, detect, and/or quantify detectable species in a variety of environments and applications. The sensing components disclosed herein can comprise MOF materials, plasmonic nanomaterials, or combinations thereof. In an exemplary embodiment, light guides can be coupled with the sensing components described herein to provide sensor devices capable of increased NIR detection sensitivity in determining the presence of detectable species, such as gases and volatile organic compounds. In another exemplary embodiment, optical properties of the plasmonic nanomaterials combined with MOF materials can be monitored directly to detect analyte species through their impact on external conditions surrounding the particle or as a result of charge transfer to and from the plasmonic material as a result of interactions with the plasmonic material and/or the MOF material.

公开(公告)号：US09535003B2

公开(公告)日：2017-01-03

申请号：US14426376

申请日：2013-08-30

Applicant: NITTO DENKO CORPORATION

Inventor： Hajime Nishio ,  Tomohiro Kontani

IPC: G01N21/552 ,  G01N21/03 ,  G02B6/10 ,  G02B6/122 ,  G02B6/138 ,  G01N21/59 ,  G02B1/04 ,  G02B6/12

CPC classification number: G01N21/553 ,  G01N21/03 ,  G01N2021/5903 ,  G01N2201/088 ,  G02B1/04 ,  G02B6/10 ,  G02B6/1226 ,  G02B6/138 ,  G02B2006/12095 ,  C08L27/12

Abstract: There are provided an SPR sensor cell and sensor, both having very excellent detection sensitivity. The SPR sensor cell includes: an under-cladding layer; a core layer, at least a part of the core layer being adjacent to the under-cladding layer; and a metal layer covering the core layer. The core layer includes a uniform layer and a gradient layer arranged between the uniform layer and the under-cladding layer; a refractive index NCO of the uniform layer satisfies a relationship of 1.34≦NCO

Abstract translation: 提供了具有非常优异的检测灵敏度的SPR传感器单元和传感器。 SPR传感器单元包括：下敷层; 芯层，芯层的至少一部分与下敷层相邻; 以及覆盖芯层的金属层。 芯层包括均匀层和布置在均匀层和下敷层之间的梯度层; 均匀层的折射率NCO满足1.34≤NCO<1.44的关系; 下层包层的折射率NCL和均匀层的折射率NCO满足NCO-NCL≥0.020的关系; 并且梯度层的折射率在大于NCL至小于NCO的范围内，在梯度层的厚度方向上从下敷层侧向均匀层侧逐渐增大。