Apparatus and method for detecting optical line fault in passive optical network
US9553665B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 12, 2015 |
| Grant date | Jan 24, 2017 |
| Priority date | — |
| Expiry date | Apr 19, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/0773
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Disclosed herein is an apparatus and method for detecting an optical line fault in a Passive Optical Network (PON). The apparatus includes an optical distribution unit configured to, when a multiplexed signal of a downstream light signal and a monitoring light signal is input, distribute the multiplexed signal to an Optical Network Unit (ONU) of a first optical path and to a second optical path. An optical layer management unit is installed in the second optical path and is configured to set a time at which the monitoring light signal of the multiplexed signal provided to the second optical path is received to a starting time of monitoring light measurement, compare a monitoring light signal reflected and returned from the ONU with a signal pattern obtained when no fault occurs, and then determine whether a fault has occurred in a distribution network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.