Input independent tilt free actively gain flattened broadband amplifier
US6215584A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 10, 1999 |
| Grant date | Apr 10, 2001 |
| Priority date | — |
| Expiry date | May 10, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2210/003
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A broadband optical amplifier that can provide a constant amplifier gain profile, correct for ASE noise, and minimize gain tilt by dynamically controlling different stages of the amplifier through a combination of gain, loss, and power control of each stage depending on input and the desired output level. The multiple stage amplifier has a central control circuit independently controlling each stage, the amplifier comprising a plurality of sequentially coupled stages, each stage being an attenuator stage, a gain setting sub-amplifier stage, or a power level setting stage. The central control circuit determines which stages are actively gain or power controlled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.