Analysis and control of optical communications systems
US7558479B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 15, 2004 |
| Grant date | Jul 7, 2009 |
| Priority date | — |
| Expiry date | Dec 10, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2210/254
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An optical communications system has a plurality of spans between a transmitter and a receiver. The receiver has optical to electrical conversion circuitry for converting the received optical signal to an electric signal, analogue to digital conversion circuitry and digital signal processing means for analysing the electrical digital signal. The digital signal processing means derives information concerning characteristics of individual spans from the electrical digital signal. This enables parameters such as per-span variations in provisioned power, local dispersion and span loss to be measured. In-service measurements of system characteristics can be used to enable optimisation of the network operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.