Electrical add-drop multiplexing for optical communications networks utilizing frequency division multiplexing
US6452945B1 · kind B1 · utility
7Cited by
24References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 13, 1999 |
| Grant date | Sep 17, 2002 |
| Priority date | — |
| Expiry date | Jan 13, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2001/0096
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A frequency division multiplexing (FDM) node used in optical communications networks provides add-drop multiplexing (ADM) functionality between optical high-speed channels, and low-speed tributaries. The FDM node includes a high-speed system and an ADM crosspoint. The high-speed system converts between an optical high-speed channel and its constituent electrical, low-speed channels through the use of frequency division multiplexing. The ADM crosspoint couples any incoming low-speed channels and any incoming tributaries to any outgoing low-speed channels and tributaries, thus implementing the ADM functionality for the FDM node.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.