OADM node and method in WDM system
US10530515B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 7, 2018 |
| Grant date | Jan 7, 2020 |
| Priority date | — |
| Expiry date | Mar 7, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2011/0009
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A node in a wavelength division multiplexing (WDM) system is provided, which includes: a colorless optical transmitter, a first arrayed waveguide grating, a first waveband filter configured to divide an input optical signal into M sub-signals of different wavebands and output to a first optical switch, and a first optical coupler/a first optical combiner. A transmit end of the colorless optical transmitter is coupled to an input end of the first waveband filter via the first arrayed waveguide grating. The first optical switch is configured to connect an output end of the first waveband filter to an input end of the first optical coupler/the first optical combiner according to a control signal. An output end of the first optical coupler/the first optical combiner is coupled to an optical transmission path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.