Quality factor trimming method using thermoelastic dissipation for multi-ring resonator

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Abstract

In this paper, a novel quality factor trimming method for a 2-axis mode-matched resonator using thermoelastic dissipation (TED) is reported. A disk resonator was designed so that the Q-factor is mainly limited by TED, in which the effect of energy dissipation can be tuned by mechanical trimming. The trimming location are carefully chosen to independently modify the Q-factors of each axis. In addition, the trimming structure is designed not to affect the resonant frequencies. From the numerical experiment, the Q-factor trimming as much as 108% could be achieved while the frequency change was 4.7% at the maximum.

Original languageEnglish
Article number113044
JournalSensors and Actuators, A: Physical
Volume332
DOIs
Publication statusPublished - 2021 Dec 1

Keywords

  • FM gyroscope
  • Frequency mismatch
  • Multi-ring resonator
  • Q-factor mismatch
  • RIG gyroscope
  • TED

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering

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