Phase shifter architecture for large-element-count optical phased arrays
US11804906B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 20, 2021 |
| Grant date | Oct 31, 2023 |
| Priority date | — |
| Expiry date | Oct 20, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/548
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system includes a transmitter configured to output an optical signal. The transmitter includes a seed laser, an optical array including a plurality of array elements, and a plurality of phase shifters in a multi-layer arrangement. The multi-layer arrangement includes a plurality of layers between the seed laser and the optical array, wherein a first layer of the plurality of layers transmits light to a second layer of the plurality of layers. The first layer has fewer phase shifters than the second layer. The multi-layer arrangement also includes a plurality of branches wherein each branch includes a phase shifter from each of the plurality of layers connected in series between the seed laser and one of the plurality of array elements. Each phase shifter is configured to shift the optical signal incrementally to amass a total phase shift for each of the plurality of array elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.