Reconfigurable thin film based DWDM devices for reconfigurable add-drop optical systems
US7454143B1 · kind B1 · utility
3Cited by
7References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2003 |
| Grant date | Nov 18, 2008 |
| Priority date | — |
| Expiry date | Jul 9, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/0209
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A reconfigurable thin film based dense wavelength division multiplexing (DWDM) device is described for hitless switching of wavelengths by employing a reconfigurable filtering device. The reconfigurable filtering device is based on a mechanical switching of a filtering chip which has a thin film coated a first one-half of a first face for interference wavelength filtering and has a gold-mirror coated on a second one-half of the first face for high reflection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.