Apparatus for monitoring optical path based on the identification of optical cross-connect input ports
US6559984B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 4, 1999 |
| Grant date | May 6, 2003 |
| Priority date | — |
| Expiry date | Nov 4, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2011/0083
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present invention relates to an optical path monitoring device on the basis of the identification of input ports in optical cross-connect systems. An optical path monitoring apparatus in an optical cross-connect system is provided. The optical cross-connect system in accordance with the present invention includes input ports, wavelength-division demultiplexers, optical switching devices, a control device, optical power regulating devices, wavelength-division multiplexers, and output ports. The optical path monitoring apparatus in accordance with the present invention includes a plurality of pilot tone superimposers, a plurality of optical splitters, and a plurality of pilot tone detectors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.