Method and apparatus for identifying an optical transmission medium
US5202746A · kind A · utility
21Cited by
2References
8Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Mar 2, 1990 |
| Grant date | Apr 13, 1993 |
| Priority date | — |
| Expiry date | Mar 2, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/25
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A technique for identifying an optical transmission medium from a plurality of single-mode-type optical transmission media by using longitudinal middle portions of the media as an identification section by first exciting a particular optical transmission media by means of a polarized light, next applying either an electromagnetic action or a mechanical action to the particular optical transmission medium to modulate the polarized light and then identifying the particular optical transmission medium based on the deviation of the polarized plane of the polarized light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.