CA2250688A1 - Fiber-optic sensing device - Google Patents

Fiber-optic sensing device

Info

Publication number
CA2250688A1
CA2250688A1 CA002250688A CA2250688A CA2250688A1 CA 2250688 A1 CA2250688 A1 CA 2250688A1 CA 002250688 A CA002250688 A CA 002250688A CA 2250688 A CA2250688 A CA 2250688A CA 2250688 A1 CA2250688 A1 CA 2250688A1
Authority
CA
Canada
Prior art keywords
gas
light
environment
wave guide
light portion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002250688A
Other languages
French (fr)
Other versions
CA2250688C (en
Inventor
David K. Benson
Clemens S. Bechinger
C. Edwin Tracy
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alliance for Sustainable Energy LLC
Original Assignee
Midwest Research Institute
David K. Benson
Clemens S. Bechinger
C. Edwin Tracy
Alliance For Sustainable Energy, Llc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Midwest Research Institute, David K. Benson, Clemens S. Bechinger, C. Edwin Tracy, Alliance For Sustainable Energy, Llc filed Critical Midwest Research Institute
Publication of CA2250688A1 publication Critical patent/CA2250688A1/en
Application granted granted Critical
Publication of CA2250688C publication Critical patent/CA2250688C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/55—Specular reflectivity
    • G01N21/552—Attenuated total reflection
    • G01N21/553—Attenuated total reflection and using surface plasmons
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4298—Coupling light guides with opto-electronic elements coupling with non-coherent light sources and/or radiation detectors, e.g. lamps, incandescent bulbs, scintillation chambers
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4246—Bidirectionally operating package structures

Abstract

A fiber-optic device (10) for sensing the presence of a gas in an environment is provided. The device (10) comprises a light source (14) for directing a light beam (36) to a layer system having a first surface (46) and a second surface (54) opposite to the first surface.
The first surface (46) is exposable to the light beam (36) and the second surface is exposable to the environment. A first light portion (50) encounters and reflects from the first surface (46) at an angle of incidence free from optical wave guide resonance phenomenon and the second light portion (52) encounters and reflects from the first surface (46) at an angle of incidence enabling an optical wave guide resonance phenomenon. The layer system is selected to reversibly react with the gas to be detected. The reaction between the gas and the material changes the material's optical properties and the wavelength at which the optical wave guide resonance occurs. Furthermore, a mechanism (24, 26, 28) for measuring the intensity of the reflected first light portion (50) relative to the reflected second light portion (52) is provided with the ratio of the first and second light portions indicating the concentration of the gas presence in the environment.
CA002250688A 1996-03-29 1997-02-20 Fiber-optic sensing device Expired - Fee Related CA2250688C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/624,112 US5708735A (en) 1996-03-29 1996-03-29 Fiber optic device for sensing the presence of a gas
US08/624,112 1996-03-29
PCT/US1997/002942 WO1997037258A1 (en) 1996-03-29 1997-02-20 Fiber-optic sensing device

Publications (2)

Publication Number Publication Date
CA2250688A1 true CA2250688A1 (en) 1997-10-09
CA2250688C CA2250688C (en) 2007-05-08

Family

ID=24500704

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002250688A Expired - Fee Related CA2250688C (en) 1996-03-29 1997-02-20 Fiber-optic sensing device

Country Status (6)

Country Link
US (1) US5708735A (en)
EP (1) EP0890123A4 (en)
JP (1) JP2000506974A (en)
AU (1) AU1974797A (en)
CA (1) CA2250688C (en)
WO (1) WO1997037258A1 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7306951B1 (en) * 1999-06-08 2007-12-11 Midwest Research Institute Method and apparatus for determining diffusible hydrogen concentrations
JP2001337036A (en) * 2000-05-25 2001-12-07 Masao Karube Differential spr sensor and measuring method using the same
US6535658B1 (en) * 2000-08-15 2003-03-18 Optech Ventures, Llc Hydrogen sensor apparatus and method of fabrication
US6895805B2 (en) * 2000-12-05 2005-05-24 William Hoagland Hydrogen gas indicator system
US8084265B2 (en) * 2001-05-05 2011-12-27 Alliance for Sustianable Energy, LLC Method and Pd/V2 O5 device for H2 detection
US7012687B2 (en) * 2004-05-04 2006-03-14 Lucent Technologies Inc. Spectral analysis with evanescent field excitation
US7155077B1 (en) * 2005-06-21 2006-12-26 Agilent Technologies, Inc Optical fiber based surface sensing system that enables spectral multiplexing
US7560409B2 (en) * 2005-08-19 2009-07-14 Alliance For Sustainable Energy, Llc Photo-oxidation catalysts
WO2009067671A1 (en) * 2007-11-21 2009-05-28 Schlumberger Technology Corporation Optical fiber hydrogen detection system and method
US7489835B1 (en) 2008-03-28 2009-02-10 General Electric Company Sensing system with fiber gas sensor
JP5452140B2 (en) * 2009-09-03 2014-03-26 日本航空電子工業株式会社 Surface plasmon resonance element for hydrogen detection, surface plasmon resonance optical hydrogen detector, and method for optically detecting hydrogen using surface plasmon resonance
WO2014162268A2 (en) * 2013-04-01 2014-10-09 Biolitec Pharma Ip & Investment Ltd. Device for tissue removal
US11502477B2 (en) * 2020-02-26 2022-11-15 Lumentum Operations Llc In-fiber retroreflector
CN113138177A (en) * 2021-05-06 2021-07-20 舟山蔚蓝生物科技有限公司 Portable air detection device

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4121548A (en) * 1976-08-08 1978-10-24 Nippon Soken, Inc. Deteriorated condition detecting apparatus for an oxygen sensor
US4294801A (en) * 1978-03-24 1981-10-13 Nippon Soken, Inc. Gas component detector
US4577110A (en) * 1983-04-11 1986-03-18 Biochem Sensors, Inc. Optical apparatus and method for measuring the characteristics of materials by their fluorescence
JPS6039536A (en) * 1983-08-12 1985-03-01 Hochiki Corp Gas sensor
GB8606045D0 (en) * 1986-03-12 1986-04-16 Emi Plc Thorn Gas sensitive device
US4841778A (en) * 1988-01-21 1989-06-27 The United States Of America As Represented By The Department Of Energy Optical fiber sensor technique for strain measurement
US4929049A (en) * 1988-01-29 1990-05-29 Fiberchem, Inc. Fiber optic refractive index sensor using a metal clad
US5026139A (en) * 1988-01-29 1991-06-25 Fiberchem Inc. Fiber optic refractive index sensor using metal cladding
US4836012A (en) * 1988-05-26 1989-06-06 Ametek, Inc. Gas sensor
US5289004A (en) * 1990-03-27 1994-02-22 Olympus Optical Co., Ltd. Scanning probe microscope having cantilever and detecting sample characteristics by means of reflected sample examination light
FI85768C (en) * 1990-07-04 1992-05-25 Valtion Teknillinen FOERFARANDE FOER UTFOERNING AV YTPLASMONRESONANSMAETNING SAMT I FOERFARANDET ANVAENDBAR GIVARE.
EP0543831B1 (en) * 1990-08-17 1995-12-13 FISONS plc Analytical device
US5351127A (en) * 1992-06-17 1994-09-27 Hewlett-Packard Company Surface plasmon resonance measuring instruments
DE4220932C2 (en) * 1992-06-26 1994-05-26 Fraunhofer Ges Forschung Method of manufacturing a chemical sensor
JP3264090B2 (en) * 1994-04-30 2002-03-11 株式会社島津製作所 Measuring device for nitrogen compounds, phosphorus compounds and organic pollutants
US5417821A (en) * 1993-11-02 1995-05-23 Electric Power Research Institute Detection of fluids with metal-insulator-semiconductor sensors
US5338708A (en) * 1993-12-20 1994-08-16 E. I. Du Pont De Nemours And Company Palladium thick film compositions
DE4424628B4 (en) * 1994-07-13 2005-11-17 Lau, Matthias, Dipl.-Ing. Method and arrangement for measuring the refractive index of different media

Also Published As

Publication number Publication date
JP2000506974A (en) 2000-06-06
US5708735A (en) 1998-01-13
EP0890123A4 (en) 1999-07-28
EP0890123A1 (en) 1999-01-13
AU1974797A (en) 1997-10-22
CA2250688C (en) 2007-05-08
WO1997037258A1 (en) 1997-10-09

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Legal Events

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