Monomode optical fiber with protection against tapping of transmitted information, and a transmission method using said fiber
US4986629A · kind A · utility
5Cited by
2References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 28, 1989 |
| Grant date | Jan 22, 1991 |
| Priority date | — |
| Expiry date | Aug 28, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/03644
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The core (2) of a monomode fiber is surrounded by a slightly monomode annular waveguide (6) guiding masking light having the same wavelength as the light conveyed by the core. The invention is particularly suitable for telecommunications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.