Method for using on line optic fiber loss monitor
US4081258A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 12, 1976 |
| Grant date | Mar 28, 1978 |
| Priority date | — |
| Expiry date | May 12, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M11/33
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method and means is disclosed for continuously monitoring an optical fiber's attenuation or loss as it is being formed, which includes: a light source, which may be the heated fiber itself during drawing operations or an external source; passing the light through the fiber being produced; positioning the end of the fiber in a holder adjacent to a light detector, for example a photodiode with or without passing the transmitted light through a filter; detecting the light transmitted by the fiber from the light source; converting the detected light into an electrical equivalent signal; amplifying the signal if necessary and recording or observing the changes in the signal to determine an objective measure of the optical fiber's attenuating characteristic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.