Method and apparatus for channel power depletion compensation for hybrid distributed Raman amplifier-Erbium doped fiber amplifier
US8767285B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 23, 2008 |
| Grant date | Jul 1, 2014 |
| Priority date | — |
| Expiry date | Oct 30, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S2301/04
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method of compensating for channel power depletion induced by Raman amplification noise in a hybrid distributed Raman amplifier-Erbium doped fiber amplifier. In the method, an equivalent noise figure is determined for a virtual amplifier equivalent to the hybrid distributed Raman amplifier-Erbium doped fiber amplifier, and having an input power equal to the input power of the Erbium doped fiber amplifier when the distributed Raman amplifier is off and an output power equal to the Erbium doped fiber amplifier output power. A compensation power, dependent at least in part upon the equivalent noise figure, is determined. A control signal is provided for controlling the hybrid amplifier such that an optical signal amplified by the hybrid amplifier has a total output power equal to a predetermined nominal output power plus the compensation power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.