Display system with tunable wavelength conversion in a nanophotonic periodically poled lithium niobate waveguide
US12189268B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 10, 2022 |
| Grant date | Jan 7, 2025 |
| Priority date | — |
| Expiry date | Apr 18, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/3558
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
According to examples, a tunable visible light source may include a periodically poled lithium niobate (PPLN) waveguide and a control mechanism to optimize the phase-matching of the PPLN waveguide in response to an input signal with a varied wavelength. The control mechanism may include an electro-optic (EO) tuning mechanism, a microheater-based thermo-optic (TO) control mechanism, and/or an acousto-optic (AO) control mechanism. The control mechanisms may, respectively, generate an electric field, heat, or an acoustic wave to affect a change in refractive index of the PPLN waveguide and thereby optimize the conversion efficiency to maximize the output power of the output wavelength of the PPLN waveguide as the input wavelength is tuned.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.