Velocity matched electro-optic devices
US12306482B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 1, 2024 |
| Grant date | May 20, 2025 |
| Priority date | — |
| Expiry date | May 1, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2202/20
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A velocity mismatch between optical signals and microwave electrical signals in electro-optic devices, such as modulators, may be compensated by utilizing different lengths of bends in the optical waveguides as compared to the microwave electrodes to match the velocity of the microwave signal propagating along the coplanar waveguide to the velocity of the optical signal. To ensure the electrode bends do not affect the light in the optical waveguide bends, the electrode may have to be rerouted, e.g. above or below, the optical waveguide layer. To ensure that the pair of optical waveguides have the same optical length, a waveguide crossing may be used to cross the first waveguide through the second waveguide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.