Device for coherently detecting in a simplified way and without optical loss
US11398869B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 2, 2020 |
| Grant date | Jul 26, 2022 |
| Priority date | — |
| Expiry date | Mar 2, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/615
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A device for coherently detecting data in an optical signal, called a useful signal, received over a first single-mode optical fibre. The device includes: a second single-mode optical fibre that receives an oscillation optical signal; a polarization-managing device that receives as input either, in a first case, the oscillation optical signal, or, in a second case, the useful signal, and that delivers as output two separate signals, over two single-mode optical guides. The coherently detecting device is configured so that a set of the three signals, which consists of the two separate signals and of either, in the first case, the useful signal, or, in the second case, the oscillation signal, is presented to a single photodiode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.