Optical amplifier system with transient control
US6414788B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 15, 2000 |
| Grant date | Jul 2, 2002 |
| Priority date | — |
| Expiry date | Nov 15, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S2301/04
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Optical amplifiers are provided that use a hybrid transient control scheme. Optical taps may be used to tap the main fiber path through the amplifier before and after the gain stage. The gain stage may be provided by one or more rare-earth-doped fiber coils such as erbium-doped fiber coils. The coils may be pumped by laser diodes or other suitable pumps. The optical output power of the pumps may be controlled by a controller. The controller may calculate the appropriate power to be applied by the pumps based on the measured input and output signal powers of the amplifier. The control process implemented by the controller may be based on a combination of feedback and feed-forward control techniques.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.