Method for adjusting time delays and device for synchronization of channels in a WDM system
US7187869B2 · kind B2 · utility
2Cited by
5References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 28, 2001 |
| Grant date | Mar 6, 2007 |
| Priority date | — |
| Expiry date | Mar 10, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2210/258
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The invention is also related to devices for a synchronization of data in an optical WDM transmission system, consisting of the following parts: A wavelength demultiplexer (1) for demultiplexing the incoming data stream in the synchronizer, delay lines (2) for the individual wavelength channels, a multiplexer (10), a modulator (3) modulated by a high frequency clock signal (5) and at least one photodetector (4) tapped to output line (B) where the photodetector (4) is connected to an electronic control circuit (6) which is connected to the findividual delay lines (2) for an automatic delay control.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.