Communication recovering system for wavelength division multiplexed passive optical network
US7558477B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 28, 2005 |
| Grant date | Jul 7, 2009 |
| Priority date | — |
| Expiry date | Jan 24, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/0291
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A communication recovering system for a wavelength division multiplexed passive optical network (WDM PON). The communication recovering system can recover fault of optical fibers between the central office and the remote nodes without additional optical fibers by grouping two remote nodes and employing AWGs having periodic transmission characteristics, and can also simply and rapidly recover such a fault with minimal optical loss using 1×N structure of the AWGs and On-Off optical switches, although protection optical fibers are additionally installed therein. The communication recovering system has advantages in that it can simplify network structure, be cost-effectively implemented, reduce optical loss, and rapidly perform protection of optical fiber fault.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.