Rotation sensor, rotation sensing method, and applications
US10415970B2 · kind B2 · utility
2Cited by
2References
6Claims
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Key dates
| Filing date | Oct 31, 2017 |
| Grant date | Sep 17, 2019 |
| Priority date | — |
| Expiry date | Oct 31, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C19/727
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A chip-scale ultrasensitive ring laser gyroscope that utilizes the physics of exceptional points. By exploiting the properties of such non-Hermitian degeneracies, the rotation-induced frequency splitting becomes proportional to the square root of the gyration speed (Ω1/2), thus enhancing the sensitivity to low angular rotations by orders of magnitudes. At its maximum sensitivity limit, the measurable spectral splitting is independent of the radius of the cavity rings involved. Binary and ternary systems and associated methods are described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.