Method and apparatus for automatic restoration detection and automatic restoration of optical communication system
US8045851B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2007 |
| Grant date | Oct 25, 2011 |
| Priority date | — |
| Expiry date | Jul 16, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/03
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Methods and apparatuses for automatic restoration detection and automatic restoration of optical communication system are disclosed. In the methods, a first station sends an automatic restoration detection message to a second station at the opposite side of a failed link; in response to receiving an automatic restoration request message, determines that the link has been repaired in two directions, and sends an automatic restoration confirmation message to the second station; or in response to receiving the automatic restoration detection message, determines that the link from the second station to the first station has been repaired, and sends the automatic restoration request message to the second station; in response to receiving the automatic restoration confirmation message, determines that the link has been repaired in two directions; and switching to normal working states. The safety problem that the laser leakage occurs in the failed link is solved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.