Reducing leading edge transients using co-propagating pumps
US6825973B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2002 |
| Grant date | Nov 30, 2004 |
| Priority date | — |
| Expiry date | May 13, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/2525
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An optical amplifier includes at least one amplification stage having a saturation recovery time of less than one (1) millisecond. The amplification stage includes a gain medium operable to receive at least one pump signal and to receive from a multiple span communication link an optical signal comprising a leading edge. The at least one pump signal and the optical signal travel in the same direction at approximately the same speed through at least a portion of the gain medium. In one particular embodiment the leading edge of the optical signal after passing through a plurality of amplifiers when received by a receiver coupled to the communication link comprises a peak power that is no more than ten times the average power of the optical signal at the receiver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.