Method and an apparatus to provide optical equipment protection
US7848644B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 23, 2004 |
| Grant date | Dec 7, 2010 |
| Priority date | — |
| Expiry date | Jun 25, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/032
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method and an apparatus to provide optical equipment protection have been disclosed. In one embodiment, the method includes splitting an incoming optical signal into a first and a second optical signals, sending the first and the second optical signals to a first and a second equipments in an optical network node, respectively, the second equipment being a protection module for the first equipment, monitoring a first and a second outgoing optical signals from the first and second equipments, and declaring a failure of the optical network node if only one of the first and the second outgoing optical signals has failed. Other embodiments have been claimed and described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.