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Enhanced rotation sensing with high-order exceptional points in a multi-mode coupled-ring gyroscope.
Optics Letters
|July 1, 2024
Summary
This study introduces a novel optical gyroscope using a fourth-order exceptional point (EP) for enhanced sensitivity. The design improves angular velocity sensing and reduces random walk, advancing gyroscope technology.
Area of Science:
- Physics
- Optical Engineering
- Quantum Sensing
Background:
- Exceptional points (EPs) in non-Hermitian systems offer high sensitivity for sensor applications.
- Optical gyroscopes are crucial for navigation and motion sensing.
Purpose of the Study:
- To propose a compact multi-mode optical gyroscope protocol utilizing a fourth-order exceptional point (EP).
- To enhance gyroscope sensitivity and reduce the angular random walk (ARW) factor.
Main Methods:
- Implementation of a compact multi-mode optical gyroscope protocol with two coupled rings.
- Analysis of a fourth-order EP to achieve higher sensitivity than second-order EPs.
- Investigation of gain dependence on cavity intensity for further sensitivity improvement.
Main Results:
- Achieved higher sensitivity compared to gyroscopes based on second-order EPs.
- Demonstrated improved sensitivity by deviating from the fourth-order EP.
- Exhibited resilience against backscattering, reducing the ARW factor.
Conclusions:
- The proposed fourth-order EP optical gyroscope protocol shows significant promise for high-performance angular velocity sensing.
- The protocol's resilience to backscattering and enhanced sensitivity advance optical gyroscope technology.
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