Method and apparatus for optical performance monitoring
US7885541B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 22, 2005 |
| Grant date | Feb 8, 2011 |
| Priority date | — |
| Expiry date | Nov 28, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/0793
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
According to one aspect of the invention, an optical network including multiple optical network devices, or nodes, is provided. At each node, an optical performance monitor analyzes dispersion while a dispersion compensation module reduces the amount of dispersion in the signals. Information about the dispersion and the amount of compensation performed by the dispersion compensation module is generated by the optical performance monitor and stored in a memory. If the bit error rate of a particular path between nodes becomes too high, a new path is used. A monitoring computer then accesses the information about the dispersion stored in at least one node of the old path. The information allows a user to determine where along the path the greatest amount of dispersion is occurring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.