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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 45, Iss. 31 — Nov. 1, 2006
  • pp: 7961–7965

Open-loop operation experiments in a resonator fiber-optic gyro using the phase modulation spectroscopy technique

Xu-lin Zhang, Hui-Iian Ma, Zhong-he Jin, and Chun Ding  »View Author Affiliations


Applied Optics, Vol. 45, Issue 31, pp. 7961-7965 (2006)
http://dx.doi.org/10.1364/AO.45.007961


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Abstract

A detection system in the resonator fiber-optic gyro is set up by the phase modulation (PM) spectroscopy technique. The slope of the demodulated curve near the resonant point is found to affect the ultimate sensitivity of the gyro. To maximize the demodulated signal slope, the modulation frequency and index are optimized by the expansion of the Bessel function and optical field overlapping method. Using different PM frequencies for the light waves, the open-loop gyro output signal is observed. The modulation frequency in this PM technique is limited only by the cutoff frequency of the LiNbO 3 phase modulators, which can reach several gigahertz. This detection technique and system can be applied to the resonator micro-optic gyro with a less than 10 cm long integrated optical ring.

© 2006 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(060.2800) Fiber optics and optical communications : Gyroscopes
(060.5060) Fiber optics and optical communications : Phase modulation
(130.6010) Integrated optics : Sensors

History
Original Manuscript: April 7, 2006
Revised Manuscript: June 20, 2006
Manuscript Accepted: June 23, 2006

Citation
Xu-lin Zhang, Hui-lian Ma, Zhong-he Jin, and Chun Ding, "Open-loop operation experiments in a resonator fiber-optic gyro using the phase modulation spectroscopy technique," Appl. Opt. 45, 7961-7965 (2006)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-45-31-7961


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