Method and apparatus for providing a broadband raman amplifier with improved noise performance
US6813067B1 · kind B1 · utility
10Cited by
7References
23Claims
0Family size
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Key dates
| Filing date | Nov 5, 2002 |
| Grant date | Nov 2, 2004 |
| Priority date | — |
| Expiry date | Dec 13, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S2301/02
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method and apparatus is presented which reduces noise degradation in the shorter wavelength band by using modulation of one/multiple pumps plus multiple-order Raman amplification. Such a scheme is very suitable for the case of SSMF fiber where pump-pump induced four-wave mixing (FWM) effects are negligible. Further, a group Time Domain Multiplexing (TDM) configuration is provided to simultaneously reduce the amplified spontaneous emission (ASE) noise and pump-pump induced FWM effects for the case of NZ-DSF fiber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.