Multilayer waveguide optical gyroscope
US10852137B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2018 |
| Grant date | Dec 1, 2020 |
| Priority date | — |
| Expiry date | Feb 23, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C19/721
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A waveguide optical gyroscope includes a multilayer waveguide rotation sensor fabricated on a substrate. The multilayer waveguide rotation sensor includes one or more overlaying non-intersecting, spiraling coils that are vertically separated to reduce or eliminate optical cross coupling. The waveguides are optically coupled by a vertical waveguide and are optically coupled to the other components of the optical gyroscope, including a light source and detector, which may be integrated or fabricated on the substrate. A lithium niobate phase modulator chip may be disposed on the substrate and optically coupled to the waveguides in the multilayer waveguide rotation sensor. The multilayer waveguide rotation sensor enables a small cross section for the guiding channels thereby achieving a high coil density in a small volume.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.