TWDM passive network with extended reach and capacity
US9749080B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 11, 2015 |
| Grant date | Aug 29, 2017 |
| Priority date | — |
| Expiry date | Nov 20, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q11/0067
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A communication system includes a first multiplexer configured to multiplex a first optical line terminal signal having a first multiplexing group and a second optical line terminal signal having a second multiplexing group into a first multiplexed signal. The communication system includes a second multiplexer configured to demultiplex a second multiplexed signal into a third optical line terminal signal having the first multiplexing group and a fourth optical line terminal signal having the second multiplexing group. Moreover, the communication system includes a third multiplexer optically connected with the first multiplexer and the second multiplexer, the third multiplexer configured to multiplex/demultiplex between a feeder optical signal and the first and second multiplexed signals. The first and second optical line terminal signals include a legacy upstream free spectral range, and the third and fourth optical line terminal signals include a legacy downstream free spectral range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.