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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 52, Iss. 30 — Oct. 20, 2013
  • pp: 7214–7219

Sensitivity improvement of resonator integrated optic gyroscope by double-electrode phase modulation

Ming Lei, Lishuang Feng, and Yinzhou Zhi  »View Author Affiliations

Applied Optics, Vol. 52, Issue 30, pp. 7214-7219 (2013)

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In this paper, a novel method to improve the sensitivity of RIOGs is demonstrated by double-electrode phase modulation (DPM) technology. The scale factor of RIOGs with single-electrode phase modulation (SPM) and DPM are theoretically analyzed and calculated. The relationship between the slope rate in the linear region adjacent to the zero-offset point and the amplitudes of the triangle waveform with SPM and DPM are obtained; the RIOG’s highest sensitivity appears when the triangle waveforms have amplitudes of 45.9 and 22.95 V, respectively. Compared with the SPM, the DPM shows great advantage in improving the RIOG scale factor, as well as its bias stability. Moreover, in measurements using the RIOG experimental setup, the scale factor is significantly increased from 1.49 to 2.76, which is coincident with the simulation result. The test results for long-term bias stability demonstrate that the DPM has the advantage of improving the signal-to-noise ratio (SNR); significantly, the RIOG long-term bias stability is greatly improved from 0.61 to 0.49 deg/s, which is the best long-term stability result reported to date, to the best of our knowledge, for a waveguide-type integrated optical resonator (IOR).

© 2013 Optical Society of America

OCIS Codes
(060.2800) Fiber optics and optical communications : Gyroscopes
(130.6010) Integrated optics : Sensors
(230.3120) Optical devices : Integrated optics devices
(070.5753) Fourier optics and signal processing : Resonators

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: June 24, 2013
Manuscript Accepted: August 25, 2013
Published: October 11, 2013

Ming Lei, Lishuang Feng, and Yinzhou Zhi, "Sensitivity improvement of resonator integrated optic gyroscope by double-electrode phase modulation," Appl. Opt. 52, 7214-7219 (2013)

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