Integrated waveguide structure with pockels layer having a selected crystal orientation
US11009727B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 13, 2018 |
| Grant date | May 18, 2021 |
| Priority date | — |
| Expiry date | Nov 13, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/035
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Aspects of the invention are directed to an electro-optical device having a layer structure including a substrate, an electrically insulating layer on top of the substrate, a bonding layer on top of the electrically insulating layer, a Pockels layer on top of the bonding layer, a waveguide core on top of the Pockels layer, and a cladding layer cladding both the waveguide core and the Pockels layer, the latter coated by the cladding layer. The Pockels layer is a layer of a crystalline first material having a Pockels coefficient between 10 pm/V and 10 000 pm/V. The waveguide core includes a second material, which can be crystalline. The device can be adapted to optically couple radiation into and/or from the waveguide core. Each of the first material and the second material has a larger refractive index than the electrically insulating layer and the cladding layer for said radiation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.