Feedback controlled Raman amplification in optical system
US9985727B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 27, 2015 |
| Grant date | May 29, 2018 |
| Priority date | — |
| Expiry date | Feb 28, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/302
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical communication link that includes two nodes interconnected by an optical channel that comprises optical fiber(s), and that is used to communicate an optical signal comprising multiple optical signal wavelengths. The first node provides an optical signal onto the optical channel towards the second node, or receives an optical signal from the optical channel from the second node. A Raman pump provides Raman pump power into the optical fiber of the optical channel to thereby perform Raman amplification of the optical signal in the optical fiber. The second node determines a quality measurement of at least of optical wavelength signals transmitted by the first node to the second node. The second node also transmits information from the quality measurement back to the first node. A controller at the first node controls at least one parameter of the Raman pump in response to this transmitted information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.