Optical matrix protection system
US6307653A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 1999 |
| Grant date | Oct 23, 2001 |
| Priority date | — |
| Expiry date | Mar 24, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2011/0081
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An optical matrix protection system is described. Optical signals that are cross-connected by a N.times.N matrix switch are routed through alternative protection paths using an optical matrix protection system. The optical matrix protection system includes a N.times.1 optical switch and a 1.times.N optical switch. An input port of the 1.times.N optical switch is coupled to an output port of the N.times.1 optical switch. Input ports of the N.times.1 optical switch are connected to a plurality of 1.times.2 optical switches, which selectively switch input optical signals to either the N.times.N matrix switch or to the N.times.1 optical switch. Output ports of the 1.times.N optical switch are connected to a plurality of 2.times.1 optical switches, which selectively switch optical signals from either the N.times.N matrix switch or laid the 1.times.N optical switch to an output line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.