Nonlinear enhanced microresonator gyroscope

Optical gyroscopes based on the Sagnac effect have been mainstay of inertial navigation in aerospace and shipping for decades. These are typically realized either as ring-laser (RLGs) or fiber-optic (FOGs). With recent rapid progress field ultrahigh-quality optical whispering-gallery mode ring microresonators, attention has focused development microresonator-based a more compact alternative to RLGs FOGs. One avenue that explored is use exceptional points non-Hermitian systems enhance responsivity rotation. We similar phenomenon, namely, critical point spontaneous symmetry-breaking transition between counterpropagating light, demonstrate microresonator gyroscope with enhanced by factor around 10 4 . present proof-of-principle rotation measurement well characterization system’s dynamical response, which shows universal behaviors enhancement slowing down, both beneficial an gyroscope. believe this concept could be used realize simple cheap chip-based sensitivities approaching those today’s