Wavelength division multiplexing combined with time division multiplexing using a common time reference
US6674754B1 · kind B1 · utility
50Cited by
10References
80Claims
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Key dates
| Filing date | Mar 28, 2000 |
| Grant date | Jan 6, 2004 |
| Priority date | — |
| Expiry date | Mar 28, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2011/005
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A switching method operates with very high-speed wavelength division multiplexing (WDM) links, i.e., with multiple lambdas. An efficient time frame switching method is based on pre-defined switching schedules that are responsive to a global common time reference, where the global common time reference is divided into a plurality of contiguous periodic time frames. The plurality of data packets contained in each of the time frames can be switched from any incoming WDM channel to any subset of outgoing WDM channels. The outcome of this switching method is called fractional lambda switching.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.