JPS56500668A - - Google Patents

Info

Publication number
JPS56500668A
JPS56500668A JP50146080A JP50146080A JPS56500668A JP S56500668 A JPS56500668 A JP S56500668A JP 50146080 A JP50146080 A JP 50146080A JP 50146080 A JP50146080 A JP 50146080A JP S56500668 A JPS56500668 A JP S56500668A
Authority
JP
Japan
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.)
Pending
Application number
JP50146080A
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 filed Critical
Publication of JPS56500668A publication Critical patent/JPS56500668A/ja
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
    • C03B37/025—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
    • C03B37/0253—Controlling or regulating
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G01B11/04—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
    • G01M11/30—Testing of optical devices, constituted by fibre optics or optical waveguides
    • G01M11/31—Testing of optical devices, constituted by fibre optics or optical waveguides with a light emitter and a light receiver being disposed at the same side of a fibre or waveguide end-face, e.g. reflectometers
    • G01M11/3109—Reflectometers detecting the back-scattered light in the time-domain, e.g. OTDR
    • G01M11/3154—Details of the opto-mechanical connection, e.g. connector or repeater

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Analytical Chemistry (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
JP50146080A 1979-06-11 1980-05-28 Pending JPS56500668A (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/047,640 US4236904A (en) 1979-06-11 1979-06-11 Method for monitoring optical fiber drawing

Publications (1)

Publication Number Publication Date
JPS56500668A true JPS56500668A (ja) 1981-05-14

Family

ID=21950098

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50146080A Pending JPS56500668A (ja) 1979-06-11 1980-05-28

Country Status (4)

Country Link
US (1) US4236904A (ja)
EP (1) EP0030542A4 (ja)
JP (1) JPS56500668A (ja)
WO (1) WO1980002834A1 (ja)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4552578A (en) * 1983-05-16 1985-11-12 At&T Bell Laboratories Optical fiber fabrication process comprising determining mode field radius and cut-off wavelength of single mode optical fibers
EP0212786A1 (en) * 1985-08-02 1987-03-04 C.R. Bard, Inc. Laser/optical fiber safety apparatus and method
GB2198524B (en) * 1986-12-11 1990-08-29 Plessey Co Plc Improvements relating to optical sensing systems
FR2618906B1 (fr) * 1987-07-27 1989-11-17 Comp Generale Electricite Dispositif de detection de surchauffes dans un cable electrique et procede de mise en oeuvre d'un tel dispositif
US4765816A (en) * 1987-10-23 1988-08-23 Mcdonnell Douglas Corporation Method and apparatus for making optical fiber couplers
US4902327A (en) * 1988-04-27 1990-02-20 Raynet Corporation Monitoring fiber bend loss characteristics during manufacture
US4961768A (en) * 1989-04-20 1990-10-09 Djeu Nicholas I Methods for bonding optical fibers to wafers
GB9027716D0 (en) * 1990-12-20 1991-02-13 British Telecomm Optical communications system
US5281813A (en) * 1992-06-30 1994-01-25 Hughes Aircraft Company Laser rangefinder test system
FR2710740B1 (fr) * 1993-09-29 1995-11-17 Lorraine Laminage Procédé de mesure de l'évolution de la longueur d'une tuyère pour l'introduction d'un fluide dans un métal liquide contenu dans un récipient métallurgique, et dispositif pour sa mise en Óoeuvre.
ES2183927T3 (es) 1996-06-21 2003-04-01 Pirelli Cavi E Sistemi Spa Composicion aislante resistente a un arbol de agua.
CA2288765A1 (en) 1997-05-22 1998-11-26 Corning Incorporated Methods and apparatus for detecting surface defects of an optical fiber
US6109064A (en) * 1998-03-31 2000-08-29 Siemens Information And Communication Networks, Inc. Process for treating optical fibers by cryogenic tempering
WO2002063350A2 (en) * 2001-02-07 2002-08-15 Omniguide Communications Optical waveguide monitoring
US6816243B2 (en) * 2001-03-05 2004-11-09 Omniguide Communications Optical waveguide monitoring
US7430881B2 (en) * 2003-01-10 2008-10-07 Weatherford/Lamb, Inc. Method of making an optical fiber attachment device
US10677983B2 (en) 2017-07-31 2020-06-09 Ofs Fitel, Llc Optically uniform fiber, methods of making, and methods of inspecting
US11879802B2 (en) * 2020-10-22 2024-01-23 Exfo Inc. Testing optical fiber link continuity using OTDR backscattering patterns
TWI798968B (zh) * 2021-12-01 2023-04-11 中華電信股份有限公司 光纜震動預警監測定位系統
CN116908211A (zh) * 2023-09-06 2023-10-20 山东华光新材料技术有限公司 一种光纤预制棒制造用缺陷检测装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1316554A (fr) * 1960-12-19 1963-02-01 Procédé et appareil pour la fabrication de systèmes optiques
US3236710A (en) * 1960-12-19 1966-02-22 Basil I Hirschowitz Method and apparatus for making fibrous light-conducting devices
US3879128A (en) * 1973-08-15 1975-04-22 Bell Telephone Labor Inc Method and apparatus for measuring the refractive index and diameter of optical fibers
DE2434380A1 (de) * 1974-07-17 1976-01-29 Siemens Ag Verfahren zum ziehen von lichtleitfasern
US4021217A (en) * 1975-07-08 1977-05-03 Bell Telephone Laboratories, Incorporated Detecting optical fiber defects
US4081258A (en) * 1976-05-12 1978-03-28 International Telephone And Telegraph Corporation Method for using on line optic fiber loss monitor
US4046536A (en) * 1976-08-13 1977-09-06 Western Electric Company, Inc. Monitoring and control of optical fiber diameters
US4102661A (en) * 1977-03-03 1978-07-25 Bell Telephone Laboratories, Incorporated Caustic ray use of the drawdown zone of an optical fiber preform to control the drawing of the fiber
FR2383137A1 (fr) * 1977-03-09 1978-10-06 Gouronnec Alain Equipement d'etirage de fibre optique a partir d'une preforme, perfectionne en ce qui concerne la regulation de la temperature du four et celle de la vitesse de descente de la preforme
GB2001050B (en) * 1977-07-13 1982-01-27 Pilkington Brothers Ltd Method of and apparatus fo producing a glass fibre bundle for use in optical communications systems
FR2453403A1 (fr) * 1979-04-06 1980-10-31 Bertin & Cie Procede et dispositif de verification d'une fibre optique transmettant une information

Also Published As

Publication number Publication date
WO1980002834A1 (en) 1980-12-24
US4236904A (en) 1980-12-02
EP0030542A1 (en) 1981-06-24
EP0030542A4 (en) 1981-10-13

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