Add/drop multiplexer node
US6134036A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 10, 1999 |
| Grant date | Oct 17, 2000 |
| Priority date | — |
| Expiry date | Feb 10, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2011/0092
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An add/drop multiplexer node in an optical network comprises an optical channel-selective switch. The switch is operable in bar and cross states and has a first input for the reception of optical multiplexed channels, a second input connected to an output on a line terminal associated with the node for adding channels, a first output, which is bar coupled to the first input and connected to a line terminal input for dropping channels and a second output, which is bar coupled to the second input. A predetermined number of channels to be dropped are selected and the channel-selective switch cross-couples non-selected channels from the first input to the second output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.