Optical transmission system and amplifier control apparatuses and methods
US6563614B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 21, 1999 |
| Grant date | May 13, 2003 |
| Priority date | — |
| Expiry date | May 21, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2210/078
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Optical systems of the present invention generally include an optical signal controller disposed along an optical link between two optical nodes. The optical signal controller is configured to provide a monitoring signal from an optical signal passing between the nodes as a plurality of wavelength sub-bands at least one of which includes a plurality of signal channels. The controller generates a compensating channel having an optical power that is a function of the monitoring signal power in the plurality of wavelength sub-bands or total power. The compensating channel is combined with the optical signal to compensate for power variations in the optical signal passing between the nodes. In addition, the compensating channels can be used to transmit communication or system supervisory information between monitoring points and/or nodes in the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.