Method of and device for performing bi-directional transmission using a single-wire
US7269349B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 2002 |
| Grant date | Sep 11, 2007 |
| Priority date | — |
| Expiry date | Dec 23, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/297
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Two signal lights having different wavelengths are bidirectionally transmitted on an optical-fiber transmission-line. A Raman pump light source generates a first Raman pump light having predetermined wavelengths with a Raman gain-bandwidth for amplifying the first signal light and without response to the second signal light. Another Raman pump light source generates a second Raman pump light having predetermined wavelengths with a Raman gain-bandwidth for amplifying the second signal light and without response to the first signal light. The first Raman pump light and the second Raman pump light are differently injected from respective input/output terminals into the optical-fiber transmission-line by optical combining and branching filters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.