Fault detection and isolation in an optical network
US7113698B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 6, 2001 |
| Grant date | Sep 26, 2006 |
| Priority date | — |
| Expiry date | May 22, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/0771
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system for detecting faults in an optical network having switching nodes and amplifier nodes is provided. According to one aspect of the system, one or more amplifier nodes are coupled between two switching nodes. Each amplifier node is capable of detecting a fault condition, such as a loss-of-signal (LOS) condition, on an incoming line. Upon detecting the LOS condition, the amplifier node generates a fault report which is then forwarded to a switching node. The switching node uses information from the fault report to initiate switching actions, if any, to restore traffic. According to another aspect of the system, each amplifier node is configured to receive a fault report received from another amplifier node and forward such fault report to a switching node. Each amplifier node is further configured to prioritize a fault condition identified in a fault report received from another amplifier node and the fault condition detected on its incoming line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.