Compact wavelength multiplexer-demultiplexer with variable filtration
US4675860A · kind A · utility
24Cited by
4References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 15, 1983 |
| Grant date | Jun 23, 1987 |
| Priority date | — |
| Expiry date | Jul 15, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/2938
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Multiplexer-demultiplexer device for wavelengths in an optical transmission fiber (6) for introducing therein a wavelength from an emitter (18) and for extracting wavelengths therefrom towards receivers (19), comprising several spherical mirrors (13-14) at least one of which (3) is a selective mirror with dielectric layers, selected to segregate by transmission or reflection a band containing only one of the wavelengths transmitted, or to be transmitted, by the fiber (6). The invention applies to telecommunications employing optical fibers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.