Passive optical network optical time-domain reflectometry
US7715718B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 1, 2006 |
| Grant date | May 11, 2010 |
| Priority date | — |
| Expiry date | Sep 6, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/071
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Optical Time-Domain Reflectometer (OTDR) troubleshooting of a passive optical network (PON) can be enhanced by deploying cascaded splitters, at least some of which have multiple inputs. That is, at least some of the splitters in the PON have not only a first input coupleable to the optical line terminator (OLT) or output of another splitter but also a second input directly coupleable to an Optical Time-Domain Reflectometer (OTDR). Optical time-delay reflectometry can be performed upon a selected portion or segment of the PON by selecting a splitter and transmitting an optical test signal from the OTDR directly to the input of the selected splitter and analyzing the reflected signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.