Method and apparatus for reducing polarization dependent gain in Raman amplification
US6414786B1 · kind B1 · utility
32Cited by
11References
29Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 27, 2000 |
| Grant date | Jul 2, 2002 |
| Priority date | — |
| Expiry date | Mar 27, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S2301/06
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method and apparatus for providing broad band Raman amplification with reduced dependence on polarization state and wavelength. Pump beams of adjacent wavelength are perpendicularly polarized to each other. Further, the wavelength spacing between adjacent pump beams is chosen for the given fiber wavelength spectrum and distance between repeater stations such that adjacent pump beams experience the same polarization state evolution as they travel through the fiber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.