Reconfigurable optical add/drop multiplexor and optical switching node
US9548834B2 · kind B2 · utility
4Cited by
7References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 9, 2015 |
| Grant date | Jan 17, 2017 |
| Priority date | — |
| Expiry date | Oct 9, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2011/0073
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A colorless, directionless ROADM includes a pair of contentioned add and drop wavelength-selective optical switches, an input wavelength-selective optical switch having one input port, and an output wavelength-selective optical switch having one output port. Unintended input-to-output port couplings, which appear in the “contentioned” add and drop switches, can be mitigated by the input and output wavelength-selective optical switches carrying the through traffic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.