Electrical signal packet routing
US8983292B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2010 |
| Grant date | Mar 17, 2015 |
| Priority date | — |
| Expiry date | Oct 30, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2011/0056
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A packet switch 40 comprises wavelength tunable optical transmitters 12, an optical switch fabric 42, optical detectors 30 and a controller 32. The transmitters 12 are arranged to receive at least one electrical signal packet to be switched and convert it into a corresponding optical signal packet at an input wavelength. The optical switch fabric 42 comprises an ingress stage 44 comprising wavelength selective routers 46 and an egress stage 50 comprising wavelength selective routers 54 and tunable wavelength converters 26 arranged to receive an optical signal at the input wavelength and to output an optical signal at an output wavelength. The controller 32 is arranged to set the input wavelength of a transmitter 12 and the output wavelength of a wavelength converter to configure a path across the switch fabric 42 connecting the transmitter 12 to a detector 30. A communications network router 90 comprises an input module 92, a packet switch 40, an output module 96 and a scheduler 94.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.