Optical switch unit
US6493481B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2001 |
| Grant date | Dec 10, 2002 |
| Priority date | — |
| Expiry date | Feb 8, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2011/0058
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
K×K optical switch unit according to the present invention is comprised of input ports 1-1, . . . 1-36, 1×M optical matrix switches 5-1-1, . . . 5-4-9 connected with the input ports 1-1, . . . 1-36, N×N optical matrix switches 7-1-1, . . . 7-4-2, and 10-1-1, . . . 10-4-2 connected with the 1×M optical matrix switches 5-1-1, . . . 5-4-9, an M×1 optical matrix switches 13-1-1, . . . 13-4-9 connected with the N×N optical matrix switches 7-1-1, . . . 7-4-2, and 10-1-1, . . . 10-4-2, and output ports 2-1, . . . 2-36 connected with the M×1 optical matrix switches 13-1-1, . . . 13-4-9, where K=M×N, M and N are integers more than 1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.