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
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.
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)
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 |
-
1978
- 1978-02-24 FR FR7805311A patent/FR2382002A2/en active Granted
Cited By (3)
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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