CA2198593A1 - Optical sensors and method for producing fibre optic modalmetric sensors - Google Patents

Optical sensors and method for producing fibre optic modalmetric sensors

Info

Publication number
CA2198593A1
CA2198593A1 CA002198593A CA2198593A CA2198593A1 CA 2198593 A1 CA2198593 A1 CA 2198593A1 CA 002198593 A CA002198593 A CA 002198593A CA 2198593 A CA2198593 A CA 2198593A CA 2198593 A1 CA2198593 A1 CA 2198593A1
Authority
CA
Canada
Prior art keywords
fibre
sensors
singlemode
multimode
multimode fibre
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
CA002198593A
Other languages
French (fr)
Other versions
CA2198593C (en
Inventor
Edward Tapanes
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.)
Future Fibre Technologies Pty Ltd
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2198593A1 publication Critical patent/CA2198593A1/en
Application granted granted Critical
Publication of CA2198593C publication Critical patent/CA2198593C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
    • G01L1/242—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
    • G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
    • G01D5/353—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
    • G01D5/35383—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using multiple sensor devices using multiplexing techniques
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
    • G01H9/004—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means using fibre optic sensors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/22—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force applied to control members, e.g. control members of vehicles, triggers
    • G01L5/226—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force applied to control members, e.g. control members of vehicles, triggers to manipulators, e.g. the force due to gripping
    • G01L5/228—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force applied to control members, e.g. control members of vehicles, triggers to manipulators, e.g. the force due to gripping using tactile array force sensors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Mechanical Coupling Of Light Guides (AREA)
  • Optical Transform (AREA)

Abstract

An optical sensor and a method of producing the optical sensor is disclosed in which a singlemode fibre (14) is fusion spliced to a multimode fibre (18). The multimode fibre is cleaved or polished at a desired location from the splice (17) to localise the sensor, the end (15) of the multimode fibre can be mirrored to reflect radiation back through the multimode fibre so that the radiation re-enters the singlemode fibre for detection by a detector (24). Alternatively, a light source (22) can be coupled to the singlemode fibre and a further singlemode fibre connected to the multimode fibre at the desired location by fusion splicing so that a detector (24) can be connected to the further singlemode fibre for detecting radiation which is passed through the multimode fibre and which has had its property changed in the multimode fibre.
CA002198593A 1994-09-13 1995-09-01 Optical sensors and method for producing fibre optic modalmetric sensors Expired - Fee Related CA2198593C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AUPM8043 1994-09-13
AUPM8043A AUPM804394A0 (en) 1994-09-13 1994-09-13 Method for producing fibre optic modalmetric sensors and applications thereof
PCT/AU1995/000568 WO1996008695A1 (en) 1994-09-13 1995-09-01 Optical sensors and method for producing fibre optic modalmetric sensors

Publications (2)

Publication Number Publication Date
CA2198593A1 true CA2198593A1 (en) 1996-03-21
CA2198593C CA2198593C (en) 2005-01-11

Family

ID=3782563

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002198593A Expired - Fee Related CA2198593C (en) 1994-09-13 1995-09-01 Optical sensors and method for producing fibre optic modalmetric sensors

Country Status (4)

Country Link
AU (1) AUPM804394A0 (en)
CA (1) CA2198593C (en)
GB (1) GB2307551B (en)
WO (1) WO1996008695A1 (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9713018D0 (en) 1997-06-20 1997-08-27 Secr Defence Optical fibre bend sensor
EP1151279A4 (en) * 1998-12-18 2007-12-05 Future Fibre Tech Pty Ltd Apparatus and method for monitoring a structure using a counter-propagating signal method for locating events
US6776543B1 (en) 2003-02-04 2004-08-17 Hewlett-Packard Development Company, L.P. Fiber optic print media thickness sensor and method
US7173690B2 (en) 2003-07-03 2007-02-06 Senstar-Stellar Corporation Method and apparatus using polarisation optical time domain reflectometry for security applications
US7376293B2 (en) 2003-07-18 2008-05-20 Network Intergrity Systems Inc. Remote location of active section of fiber in a multimode intrusion detection system
US7403675B2 (en) 2003-07-18 2008-07-22 Network Integrity Systems Inc. Method of high order mode excitation for multimode intrusion detection
US7403674B2 (en) 2003-07-18 2008-07-22 Network Integrity Systems Inc. Intrusion detection system for a multimode optical fiber using a bulk optical wavelength division multiplexer for maintaining modal power distribution
CA2529654C (en) 2003-07-18 2012-04-03 Network Integrity Systems Inc. Multimode fiber optic intrusion detection system
US8358882B2 (en) * 2008-03-11 2013-01-22 Future Fibre Technologies Pty Ltd. Modalmetric fibre sensor
WO2011044619A1 (en) * 2009-10-14 2011-04-21 Future Fibre Technologies Pty Ltd Modalmetric fibre sensor
DE102010019813A1 (en) * 2010-05-06 2011-11-10 Siemens Aktiengesellschaft Fiber optic vibration sensor
CN103852093A (en) * 2013-12-19 2014-06-11 哈尔滨工业大学（威海） Fiber laser sensing system based on mode interference reflection structure
CN107490429A (en) * 2017-07-21 2017-12-19 国网上海市电力公司 A kind of anti-error excavation prior-warning device of underground cable
CN107525579A (en) * 2017-07-21 2017-12-29 国网上海市电力公司 A kind of more defence area vibration detecting devices based on the coupling of optical fiber double mode
CN107247037B (en) * 2017-07-28 2023-06-02 中国工程物理研究院激光聚变研究中心 Molecular organic pollutant monitoring sensor based on single-mode-multimode-coreless optical fiber structure
CN110243456A (en) * 2019-07-23 2019-09-17 国网上海市电力公司 A kind of more defence area vibration detecting devices based on the coupling of optical fiber double mode
US11585692B2 (en) * 2019-10-24 2023-02-21 Palo Alto Research Center Incorporated Fiber optic sensing system for grid-based assets
US11719559B2 (en) 2019-10-24 2023-08-08 Palo Alto Research Center Incorporated Fiber optic sensing system for grid-based assets
CN112816996B (en) * 2021-01-29 2023-09-15 太原理工大学 Device and method for detecting multimode fiber fault position by utilizing optical resonant cavity
CN113589439B (en) * 2021-07-29 2022-05-13 西南交通大学 Fiber integrated Sagnac total reflection mirror based on double-core optical fiber, method and optical system
WO2023196795A2 (en) * 2022-04-04 2023-10-12 University Of Pittsburgh-Of The Commonwealth System Of Higher Education Monitoring system based on multiplexed multimode interferometric sensors

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4292023A (en) * 1979-08-01 1981-09-29 Curtiss-Wright Corporation Fluidized bed combustor and removable windbox and tube assembly therefor
FR2519877B1 (en) * 1982-01-20 1986-10-31 Charbonnages De France FLUIDIZING GRID AND COMBUSTION FIRE WITH LOWER AIR BLOW GRID AND METHOD FOR TREATING PARTICULATE MATERIAL IN A FLUIDIZING AND / OR DRIVING CHAMBER
CH659876A5 (en) * 1983-05-10 1987-02-27 Sulzer Ag Fluid bed firing.
DE3623177A1 (en) * 1986-06-23 1988-01-07 Ruhrkohle Waerme Gmbh Combustion chamber for atmospheric steady-state fluidised bed firing
US5008545A (en) * 1989-10-23 1991-04-16 Tektronix, Inc. High resolution optical fault locator

Also Published As

Publication number Publication date
GB2307551B (en) 1999-08-11
GB2307551A (en) 1997-05-28
WO1996008695A1 (en) 1996-03-21
GB9704123D0 (en) 1997-04-16
CA2198593C (en) 2005-01-11
AUPM804394A0 (en) 1994-10-06

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Effective date: 20150901