GB2407154A8 - Acoustic emission sensor based on a fused tapered optical coupler with sharp taper angle - Google Patents

Acoustic emission sensor based on a fused tapered optical coupler with sharp taper angle

Info

Publication number
GB2407154A8
GB2407154A8 GB0323946A GB0323946A GB2407154A8 GB 2407154 A8 GB2407154 A8 GB 2407154A8 GB 0323946 A GB0323946 A GB 0323946A GB 0323946 A GB0323946 A GB 0323946A GB 2407154 A8 GB2407154 A8 GB 2407154A8
Authority
GB
United Kingdom
Prior art keywords
optical coupler
taper angle
sensor based
acoustic emission
emission sensor
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
GB0323946A
Other versions
GB0323946D0 (en
GB2407154B (en
GB2407154B8 (en
GB2407154A (en
Inventor
Rodney Alan Badcock
Thomas Butler
Rongsheng Chen
Gerard Franklin Fernando
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.)
Cranfield University
Original Assignee
Cranfield University
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 Cranfield University filed Critical Cranfield University
Priority to GB0323946A priority Critical patent/GB2407154B8/en
Publication of GB0323946D0 publication Critical patent/GB0323946D0/en
Priority to PCT/GB2004/004333 priority patent/WO2005040727A2/en
Publication of GB2407154A publication Critical patent/GB2407154A/en
Publication of GB2407154B publication Critical patent/GB2407154B/en
Application granted granted Critical
Publication of GB2407154A8 publication Critical patent/GB2407154A8/en
Publication of GB2407154B8 publication Critical patent/GB2407154B8/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R23/00—Transducers other than those covered by groups H04R9/00 - H04R21/00
    • H04R23/008—Transducers other than those covered by groups H04R9/00 - H04R21/00 using optical signals for detecting or generating sound
    • 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
    • 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
    • G02B6/255—Splicing of light guides, e.g. by fusion or bonding
    • G02B6/2552—Splicing of light guides, e.g. by fusion or bonding reshaping or reforming of light guides for coupling using thermal heating, e.g. tapering, forming of a lens on light guide ends
    • 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
    • G02B6/26—Optical coupling means
    • G02B6/264—Optical coupling means with optical elements between opposed fibre ends which perform a function other than beam splitting
    • 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
    • G02B6/4295—Coupling light guides with opto-electronic elements coupling with semiconductor devices activated by light through the light guide, e.g. thyristors, phototransistors
    • 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
    • G02B6/4296—Coupling light guides with opto-electronic elements coupling with sources of high radiant energy, e.g. high power lasers, high temperature light sources
    • 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
    • G02B6/26—Optical coupling means
    • G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/2804—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers
    • G02B6/2856—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers formed or shaped by thermal heating means, e.g. splitting, branching and/or combining elements

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Plasma & Fusion (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Optical Transform (AREA)
GB0323946A 2003-10-13 2003-10-13 Improvements in and relating to fibre optic sensors Expired - Lifetime GB2407154B8 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB0323946A GB2407154B8 (en) 2003-10-13 2003-10-13 Improvements in and relating to fibre optic sensors
PCT/GB2004/004333 WO2005040727A2 (en) 2003-10-13 2004-10-12 Improvements in and relating to fibre optic sensors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0323946A GB2407154B8 (en) 2003-10-13 2003-10-13 Improvements in and relating to fibre optic sensors

Publications (5)

Publication Number Publication Date
GB0323946D0 GB0323946D0 (en) 2003-11-12
GB2407154A GB2407154A (en) 2005-04-20
GB2407154B GB2407154B (en) 2007-01-10
GB2407154A8 true GB2407154A8 (en) 2007-02-20
GB2407154B8 GB2407154B8 (en) 2007-02-20

Family

ID=29433803

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0323946A Expired - Lifetime GB2407154B8 (en) 2003-10-13 2003-10-13 Improvements in and relating to fibre optic sensors

Country Status (2)

Country Link
GB (1) GB2407154B8 (en)
WO (1) WO2005040727A2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006034538A1 (en) * 2004-09-28 2006-04-06 The Commonwealth Of Australia Opto-acoustic pressure sensor
US7810395B2 (en) * 2005-12-22 2010-10-12 Total Wire Corporation Ultrasonic pressure sensor and method of operating the same
US8166825B2 (en) 2007-10-30 2012-05-01 Tea Time Partners, L.P. Method and apparatus for noise reduction in ultrasound detection
CN101726354B (en) * 2009-12-16 2011-07-20 中国科学院半导体研究所 Optical fiber laser vector hydrophone
CN103472136A (en) * 2013-08-30 2013-12-25 南京航空航天大学 Acoustic emission sensing system based on single mode fiber coupler
CN108195943B (en) * 2018-03-12 2023-11-03 中国工程物理研究院化工材料研究所 Optical fiber acoustic emission system for monitoring explosive damage and destruction process and monitoring method thereof
CN110132329B (en) * 2019-05-08 2021-05-04 汕头大学 Stress, temperature and vibration composite detection optical fiber sensor and signal processing method

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4471474A (en) * 1979-09-28 1984-09-11 Hughes Aircraft Company Coupled waveguide acousto-optic hydrophone
US4634858A (en) * 1984-10-17 1987-01-06 Sperry Corporation Variable coupler fiberoptic sensor
US5074309A (en) * 1989-12-04 1991-12-24 Sperry Marine Inc. Device for monitoring cardiovascular signals and fiber optic coupler phonocardio sensor therefor
US6134362A (en) * 1998-06-04 2000-10-17 U.S.A. Kaifa Technology, Inc. Short length fused fiber optical couplers and method of making same
US6723054B1 (en) * 1998-08-24 2004-04-20 Empirical Technologies Corporation Apparatus and method for measuring pulse transit time
AU756142B2 (en) * 1998-08-24 2003-01-02 Charles Adkins Apparatus and method for measuring pulse transit time
GB9820467D0 (en) * 1998-09-18 1998-11-11 Europ Economic Community Sensing apparatus and a measurment method
GB9919822D0 (en) * 1999-08-20 1999-10-27 Univ Bath Improvements in and relating to fibre optic devices
GB0004599D0 (en) * 2000-02-29 2000-04-19 Liu Tongyu An optical fibre sensor system for acoustic emission detection

Also Published As

Publication number Publication date
GB0323946D0 (en) 2003-11-12
WO2005040727A2 (en) 2005-05-06
GB2407154B (en) 2007-01-10
GB2407154B8 (en) 2007-02-20
GB2407154A (en) 2005-04-20
WO2005040727A3 (en) 2005-09-15

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