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Fabrication and Testing of Microfluidic Optomechanical Oscillators
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Published on: May 29, 2014

Current modulation technique used in resonator micro-optic gyro.

Ming Lei1, Lishuang Feng, Yinzhou Zhi

  • 1Science and Technology on Inertial Laboratory, Beihang University, Beijing 100191, China. leiming1998@yeah.net

Applied Optics
|January 15, 2013
PubMed
Summary

A novel current modulation technique enhances resonator micro-optic gyros (RMOGs) for superior inertial rotation sensing. This method achieves excellent bias stability and dynamic range, paving the way for next-generation sensors.

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Area of Science:

  • Optics and Photonics
  • Inertial Sensing Technologies
  • Optical Gyroscopes

Background:

  • Resonator micro-optic gyros (RMOGs) leverage the Sagnac effect for inertial rotation sensing.
  • Conventional RMOGs face challenges in sensitivity and stability.
  • External cavity laser diodes are key components in advanced optical gyroscopes.

Purpose of the Study:

  • To introduce a novel current modulation technique for RMOGs.
  • To theoretically analyze and experimentally validate the proposed modulation method.
  • To optimize the gyroscope's performance for next-generation applications.

Main Methods:

  • Theoretical analysis and simulation of resonance and demodulation curves.
  • Implementation of a current modulation technique in an external cavity laser diode.
  • Experimental setup of an RMOG using a silica optical waveguide ring resonator.

Main Results:

  • Demonstrated bias stability of 2.7 deg/s (10 s integrated time) over 600 s.
  • Achieved a dynamic range of ±500 deg/s.
  • Identified an optimal modulation current for maximum sensitivity.

Conclusions:

  • The proposed current modulation technique significantly improves RMOG performance.
  • This advancement offers a promising pathway for next-generation inertial rotation sensors.
  • The study validates the effectiveness of the technique in a practical RMOG setup.