Apparatus for wavelength demultiplexing using a multi-cavity etalon
US6208444A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 8, 1999 |
| Grant date | Mar 27, 2001 |
| Priority date | — |
| Expiry date | Sep 8, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2011/0035
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A wavelength division demultiplexing device is presented utilizing a polarization-based filter or a multi-cavity etalon (e.g., a multi-cavity Fabry-Perot etalon) to obtain a flat-top filter response which can be utilized to create a flat-top slicer which separates out odd and even wavelengths, or upper and lower channels of an input WDM signal. The flat-top slicer can be used as the first stage of a cascaded network of wavelength demultiplexers in which following stages can be based on polarization-based filters, multi-cavity etalons, or other interferometric WDM devices, which are adequate due to the increased channel spacing obtained in the first stage of the network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.