Verification of path integrity in optical switch network
US6980736B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 3, 2002 |
| Grant date | Dec 27, 2005 |
| Priority date | — |
| Expiry date | Jun 22, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2011/0083
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
To verify the integrity of optical paths through and among optical switches, optical signals are provided with co-propagating supplemental signals. The supplemental signals preferably have at least one characteristic which allows distinguishing one supplemental signal from another. Associated with a port of a switch, means are provided for detecting a supplemental signal and determining if the supplemental signal indicates that a desired optical signal is passing through the port as expected and desired. Means for imparting or changing the distinguishing characteristic of a supplemental signal may also be employed to facilitate verifying the passage of optical signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.