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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 32 — Nov. 10, 2010
  • pp: 6253–6263

Transient response of a resonator fiber optic gyro with triangular wave phase modulation

Huilian Ma, Yan Chen, Mucheng Li, and Zhonghe Jin  »View Author Affiliations


Applied Optics, Vol. 49, Issue 32, pp. 6253-6263 (2010)
http://dx.doi.org/10.1364/AO.49.006253


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Abstract

We present an in-depth analysis of the transient response of a resonator fiber optic gyro based on triangular wave phase modulation. Unusual effects have been observed in the process of tracking the resonant frequency of an optical fiber ring resonator (OFRR). There is a distortion phenomenon, unlike the ideally square wave or a pure DC output of the OFRR, but signal overshoot or undershoot occurs. A deep analysis of the influence of the nonideal square wave or pure DC output on gyro performance is fully developed for the first time, to the best of our knowledge. Further analysis shows that this is the transient response process after modulation by the triangular wave, and the process is related both to the parameters of the OFRR and the modulation frequency of the triangular wave. By sampling the steady-state signal of the distortion square wave, or by oversampling the distortion signal to get a number of data, and then accumulating and averaging these data to be demodulated, the distortion’s effect can be considerably decreased.

© 2010 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(060.2800) Fiber optics and optical communications : Gyroscopes

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: July 27, 2010
Revised Manuscript: September 29, 2010
Manuscript Accepted: October 1, 2010
Published: November 4, 2010

Citation
Huilian Ma, Yan Chen, Mucheng Li, and Zhonghe Jin, "Transient response of a resonator fiber optic gyro with triangular wave phase modulation," Appl. Opt. 49, 6253-6263 (2010)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-49-32-6253

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