FR2382002A2 - Testing optical fibre for attenuation - during plastics coating or forming into cable, by passing light through fibre (NO 18.9.78) - Google Patents

Testing optical fibre for attenuation - during plastics coating or forming into cable, by passing light through fibre (NO 18.9.78)

Info

Publication number
FR2382002A2
FR2382002A2 FR7805311A FR7805311A FR2382002A2 FR 2382002 A2 FR2382002 A2 FR 2382002A2 FR 7805311 A FR7805311 A FR 7805311A FR 7805311 A FR7805311 A FR 7805311A FR 2382002 A2 FR2382002 A2 FR 2382002A2
Authority
FR
France
Prior art keywords
fibre
cable
attenuation
forming
passing light
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
FR7805311A
Other languages
French (fr)
Other versions
FR2382002B2 (en
Inventor
George James Cannell
Alan Cook
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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
Priority claimed from US05/685,861 external-priority patent/US4081258A/en
Priority claimed from GB7902/77A external-priority patent/GB1557155A/en
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of FR2382002A2 publication Critical patent/FR2382002A2/en
Application granted granted Critical
Publication of FR2382002B2 publication Critical patent/FR2382002B2/fr
Granted 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
    • C03B37/03—Drawing means, e.g. drawing drums ; Traction or tensioning devices
    • C03B37/032—Drawing means, e.g. drawing drums ; Traction or tensioning devices for glass optical fibres
    • 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
    • G01M11/33—Testing of optical devices, constituted by fibre optics or optical waveguides with a light emitter being disposed at one fibre or waveguide end-face, and a light receiver at the other end-face

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Optics & Photonics (AREA)
  • Analytical Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Surface Treatment Of Glass Fibres Or Filaments (AREA)

Abstract

Method comprises passing one end of the fibre through an appts. for providing the plastic coating and directing light onto the end of the fibre so that the light is transmitted along the length of the fibre to a photodetector. The light detected then produces, as a function of the luminous flux passed through the fibre, a signal representing the variation of attenuation of the optical fibre occuring while it is being coated. The method is also used while the fibres are being assembled into an optical cable. The process observes the changes of attenuation occurring, during application of the protective coating, at any part of the optical fibre. Similar changes can be observed as a result of assembling the fibre into an optical cable. It permits unsatisfactory lengths of fibre or cable to be cut out and scrapped.
FR7805311A 1976-05-12 1978-02-24 Testing optical fibre for attenuation - during plastics coating or forming into cable, by passing light through fibre (NO 18.9.78) Granted FR2382002A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US05/685,861 US4081258A (en) 1976-05-12 1976-05-12 Method for using on line optic fiber loss monitor
GB7902/77A GB1557155A (en) 1977-02-24 1977-02-24 Testing of optical fibre

Publications (2)

Publication Number Publication Date
FR2382002A2 true FR2382002A2 (en) 1978-09-22
FR2382002B2 FR2382002B2 (en) 1983-02-25

Family

ID=26241744

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7805311A Granted FR2382002A2 (en) 1976-05-12 1978-02-24 Testing optical fibre for attenuation - during plastics coating or forming into cable, by passing light through fibre (NO 18.9.78)

Country Status (1)

Country Link
FR (1) FR2382002A2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0114637A2 (en) * 1983-01-24 1984-08-01 Bausch & Lomb Incorporated Portable illuminated optical fiber microscope
US4902327A (en) * 1988-04-27 1990-02-20 Raynet Corporation Monitoring fiber bend loss characteristics during manufacture

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0114637A2 (en) * 1983-01-24 1984-08-01 Bausch & Lomb Incorporated Portable illuminated optical fiber microscope
EP0114637A3 (en) * 1983-01-24 1985-08-28 Bausch & Lomb Incorporated Portable illuminated optical fiber microscope
US4902327A (en) * 1988-04-27 1990-02-20 Raynet Corporation Monitoring fiber bend loss characteristics during manufacture

Also Published As

Publication number Publication date
FR2382002B2 (en) 1983-02-25

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