Multi-city DWDM wavelength link architectures and methods for upgrading
US8086101B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 19, 2002 |
| Grant date | Dec 27, 2011 |
| Priority date | — |
| Expiry date | Jan 8, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2011/0075
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A multi-city wavelength link architecture is used to distribute spectral bands received on input optical signals among output optical signals. Such an architecture may include an optical wavelength cross connect having multiple input ports, multiple output ports, and a wavelength routing element that selectively routes wavelength components between one optical signal and multiple optical signal. Such an optical wavelength cross connect will generally receive cross-connect-input optical signals at the input ports and transmit cross-connect-output optical signals from the output ports. Methods are used to increase the number of cities that may be accommodated by the architecture without disrupting through traffic between the existing cities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.