Fiber-adaptive distributed Raman amplifier pump setup scheme
US8477411B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 17, 2009 |
| Grant date | Jul 2, 2013 |
| Priority date | — |
| Expiry date | Oct 5, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S2301/04
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Techniques, in the form of an apparatus, logic and a method, are provided to set power levels for multiple Raman pump wavelengths in a distributed Raman amplification configuration in order to achieve a target gain and tilt or desired gain profile. A Raman pump light source is activated at each of a plurality of pump wavelengths and at each of a plurality of pump power levels such that only one pump wavelength at a given pump power level is active at a time to thereby amplify an optical probe signal in the optical fiber to produce an amplified probe signal. The level of the amplified probe signal at each of the pump power levels for the plurality of pump wavelengths is measured. The pump power level for each of the plurality of pump wavelengths is computed based on the measured levels of the amplified probe signals due to each of the pump power levels and at each of the pump power levels for the plurality of pump wavelengths.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.