Method and apparatus for controlling Raman amplification using excitation light pulses of different wavelengths
US6844961B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 25, 2002 |
| Grant date | Jan 18, 2005 |
| Priority date | — |
| Expiry date | Mar 25, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S2301/06
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In an Raman amplification control apparatus, a plurality of excitation light pulses respectively having a plurality of different wavelengths are generated; and the plurality of excitation light pulses are injected into a predetermined optical transmission line in turn at such timings that the plurality of excitation light pulses do not overlap even after propagation of a predetermined effective length of the predetermined optical transmission line. In addition, the plurality of excitation light pulses may be injected into the predetermined optical transmission line in such an order that the difference between propagation velocities (or wavelengths) of each pair of ones of the plurality of excitation light pulses successively injected into the predetermined optical transmission line is minimized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.