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Updated: Jan 8, 2026

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Detección de rotación mejorada por puntos excepcionales con robustez mejorada y división de frecuencia real

Lingyu Li, Ying Wang, Liu Yang

|December 15, 2025

Abstract:

Optical gyroscopes measure angular velocity based on the Sagnac effect. However, the resonance frequency splitting induced by this effect is proportional to the physical size of the device, which poses constraints on the integration of the system. In non-Hermitian systems, exceptional points (EPs) exhibit extreme sensitivity to small perturbations, offering great potential for the development of high-sensitivity sensors. This study proposes a non-Hermitian gyroscope design that is easy to implement and offers high degrees of freedom. In this scheme, frequency splitting can be tuned by adjusting the phase shift, while the introduction of gain enhances the magnitude of frequency splitting without inducing lasing. This mechanism offers critical support for achieving ultra-precise rotational sensing. Theoretical analysis indicates that, compared to the classical Sagnac effect, the frequency splitting enhancement can exceed seven orders of magnitude at a rotation rate of 0.01°/h.

Palabras clave:

giroscopio no hermitiano puntos excepcionales detección de rotación ganancia óptica metrología óptica

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