ATM switching matrix including a passive optical core
US6414766B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 1999 |
| Grant date | Jul 2, 2002 |
| Priority date | — |
| Expiry date | Oct 7, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2011/0052
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An ATM switching matrix has input ports, output ports and a passive optical core consisting of optical couplers. Each output port includes at least p optical receivers which are tuned to the same fixed wavelength which is specific to the output port. Each receiver has an input respectively connected to a port of one of the p couplers, a buffer having p inputs respectively connected to the outputs of the p receivers and an output connected to an output of the matrix. The matrix includes distributed allocation arrangements which control switching arrangements of each input port to connect, to k separate couplers, k respective input ports which at the time concerned are receiving k cells addressed to the same output port, k being less than or equal to p, and this operation being repeated for each output port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.