Affiliation:
1. University of Electronic Science and Technology of China
Abstract
Cavity optomechanics with picometer displacement measurement resolution has shown vital applications in high-precision sensing areas. In this paper, an optomechanical micro hemispherical shell resonator gyroscope (MHSRG) is proposed, for the first time. The MHSRG is driven by the strong opto-mechanical coupling effect based on the established whispering gallery mode (WGM). And the angular rate is characterized by measuring the transmission amplitude changing of laser coupled in and out from the optomechanical MHSRG based on the dispersive resonance wavelength shift and/or dissipative losses varying. The detailed operating principle of high-precision angular rate detection is theoretically explored and the fully characteristic parameters are numerically investigated. Simulation results show that the optomechanical MHSRG can achieve scale factor of 414.8 mV/ (°/ s) and angular random walk of 0.0555 °/ h1/2 when the input laser power is 3 mW and resonator mass is just 98 ng. Such proposed optomechanical MHSRG can be widely used for chip-scale inertial navigation, attitude measurement, and stabilization.
Funder
National Natural Science Foundation of China
National Key Research and Development Program of China
Fundamental Enhancement Program Technology Area Fund
Joint Fund of ZF and Ministry of Education
Guangdong Provincial Research and Development Plan in Key Areas
Sichuan Provincial Science and Technology Planning Program of China
Joint Project of China Mobile Research Institute & X-NET
Fund Project of Intelligent Terminal Key Laboratory of Sichuan Province
Subject
Atomic and Molecular Physics, and Optics