WDM channel monitoring system and method
US6748179B2 · kind B2 · utility
5Cited by
17References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 7, 2001 |
| Grant date | Jun 8, 2004 |
| Priority date | — |
| Expiry date | Mar 7, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/0297
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The system and method of the present invention is operative to monitor the performance of an optical communications channel. An optical splitter splits a wavelength division multiplexed (WDM) optical communications signal into a low power WDM signal onto a back-up path, where a tunable filter sweeps the optical communications channels, while a monitoring circuit monitors the optical communications channels for performance. Optical power can be stored and subsequently displayed, providing an optical spectrum analysis of the signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.