Article comprising a series expandable erbium-doped fiber amplifier (SE-EDFA)
US7692851B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2005 |
| Grant date | Apr 6, 2010 |
| Priority date | — |
| Expiry date | May 16, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2210/003
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method for increasing the number of channels amplified by an optical amplifier arrangement is provided. The optical amplifier arrangement includes at least one optical amplifier stage amplifying a first number of channels at a given average gain level. The method begins by selecting a second number of channels to be amplified by the optical amplifier arrangement. At least one additional optical amplifier stage is serially coupled to an input or output of the at least one optical amplifier stage to form a multistage optical amplifier arrangement. The gain shape of the multistage optical amplifier is adjusted to maintain, at the given average gain level or greater, a prescribed degree of gain flatness over an operating bandwidth in which the second number of channels are located.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.