Optical readout of resonant quartz sensors

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Optical readout of resonant quartz sensors

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© The Institution of Electrical Engineers
Published

A force-sensitive AT-cut quartz disc produced variable-frequency optical modulation with a depth of 8% at the 2 MHz fundamental resonance. The elements of a fibre-optic sensor were demonstrated, including optical powering of the oscillator and optical modulation at the difference frequency between a reference crystal and a sensor crystal.

Inspec keywords: optical modulation; crystal resonators; quartz

Other keywords: optical readout; optical powering; reference crystal; sensor crystal; variable-frequency optical modulation; force-sensitive AT-cut quartz disc; 2 MHz fundamental resonance; resonant quartz sensors; oscillator

Subjects: Piezoelectric and ferroelectric devices

References

    1. 1)
      • S. Yamagata . Aging characteristic of light-modulation quartz crystal oscillator with glass-bar-mounted plano-convex AT-cut quartz crystal plate. Electron. Lett. , 795 - 797
    2. 2)
      • S. Yamagata , K. Yamamoto , I. Fukai , S. Yasuda . Thickness shear stress distributions of the oscillating planoconvex AT-cut quartz crystal resonator. Electron. Lett. , 450 - 451
    3. 3)
      • A. Ballato . Force-frequency compensation applied to four-point mounting of AT-cut resonators. IEEE Trans. , 223 - 226
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