Optical add/drop device and assembly, and communications network node
US11675133B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2018 |
| Grant date | Jun 13, 2023 |
| Priority date | — |
| Expiry date | Oct 30, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/0216
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical add/drop device (100) comprising: a common port (102); an add port (106); a first wavelength selective optical filter (110) configured to: receive an optical signal at an add wavelength from the add port and transmit said optical signal at the add wavelength towards the common port; and receive optical signals from the common port and reflect optical signals not at the add wavelength; a second wavelength selective optical filter (114) configured to receive said optical signals from the common port reflected by the first wavelength selective optical filter and transmit an optical signal at a drop wavelength, different to the add wavelength; a drop port (116); and an optical waveguide (118) configured receive said optical signal at the drop wavelength transmitted by the second wavelength selective optical filter and route said optical signal to the drop port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.