Raman amplifier
US7180654B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 21, 2003 |
| Grant date | Feb 20, 2007 |
| Priority date | — |
| Expiry date | Dec 24, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/2916
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Multi-wavelength light, including a plurality of segments of light signal with a different wavelength each, is inputted into a Raman amplification fiber. Pumping light generated by a pumping light source is supplied to the Raman amplification fiber in the opposite direction of the transmission direction of the multi-wavelength light. An auxiliary light source generates auxiliary light. An auxiliary light control circuit adjusts the optical power of the auxiliary light with a prescribed response time, based on the change in input power of the multi-wavelength light. The auxiliary light is supplied to the Raman amplification fiber in the same direction as the transmission direction of the multi-wavelength light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.