Optical fiber test apparatus
US4286469A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 6, 1980 |
| Grant date | Sep 1, 1981 |
| Priority date | — |
| Expiry date | Feb 6, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2203/028
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Fibers, particularly optical fibers, are tested for determining their tene strength in expected environments. A pair of sheaves, on journaled and the other fixed receive a looped length of fiber and are placed within a cylindrical shell which is filled with an expected environmental medium, such as seawater. The sheaves are pulled apart subjecting the fiber to tensile loading and a strain gauge provides responsive read-outs so that the fiber's fatigue strength can be determined. The size of the sheaves and adhesively securing the loose ends of the fiber prevents the generation of any spurious pinching torsional stresses. Placing the fiber in the environmental fluid allows a monitoring of the effects of the fluid on the fiber's cladding and core so that the strength limits of the fiber are accurately determined under simulated operational conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.