Device and method for optical add/drop multiplexing
US7330658B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 20, 2001 |
| Grant date | Feb 12, 2008 |
| Priority date | — |
| Expiry date | Feb 22, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/0213
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An optical add/drop multiplexing (OADM) device includes two MMI structures connected by a MI/MZI waveguide structure comprising a wavelength selector that includes phase shifted Bragg gratings. The OADM multiplexer transmits a wavelength channel selected in advance and reflects all other channels to achieve a drop functionality. Simultaneously, a further channel may be added to the multiplexer at the same side as the channel selected in advance is output. The further channel preferably is centered around the same wavelength as the channel selected in advance. The further channel is transmitted through the Bragg gratings and is superimposed with the other channels to achieve an add functionality.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.