Abstract
In view of the poor scale factor stability of the interferometric fiber optic gyroscope (IFOG), it is a creative method to use laser to drive the IFOG for its better frequency stabilization characteristics instead of the broadband light source. As the linewidth of laser is narrow, the errors of coherent backscattering, polarization coupling, and Kerr effect are reintroduced which cause more noise and drift. This paper studies laser spectrum broadening based on external phase modulation of Gaussian white noise (GWN). The theoretical analysis and test results indicate that this method has a good effect on spectrum broadening and can be used to improve the performance of the laser-driven IFOG. In the established closed-loop IFOG, a four-state modulation (FSM) is adopted to avoid temperature instability of the multifunction integrated-optic chip (MIOC) and drift caused by the electronic circuit in demodulation. The experimental results show that the IFOG driven by broadened laser has the angular random walk noise of 0.003 8 °/√h and the drift of 0.017 °/h, which are 62% and 66% better than those without modulation respectively, of which the drift has reached the level of the broadband light source. Although the noise still needs further reduction, its scale factor stability is 0.38 ppm, which has an overwhelming advantage compared with the traditional IFOG.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
H. J. Arditty and H. C. Lefevre, “Theoretical basis of Sagnac effect in fiber gyroscopes,” in the First International Conference MIT, USA, November 9–11, 1981, pp. 44–51.
Z. Zhou, Z. W. Tan, X. Y. Wang, and Z. Y. Wang, “Experimental analysis of the dynamic north-finding method based on a fiber optic gyroscope,” Applied Optics, 2017, 56(23): 6504–6510.
W. B. Gan, W. B. Hu, F. Liu, J. G. Tang, S. Li, and Y. Yang, “Bridge continuous deformation measurement technology based on fiber optic gyro,” Photonic Sensors, 2016, 6(1): 71–77.
Q. Wang, J. Xie, C. Yang, C. He, X. Wang, and Z. Wang, “Step angles to reduce the north-finding error caused by rate random walk with fiber optic gyroscope,” Applied Optics, 2015, 54(30): 8944–8950.
Z. Y. Zhang and C. T. Liu, “Fiber optic gyroscope dynamic north-finder algorithm modeling and analysis based on Simulink,” Photonic Sensors, 2017, 7(3): 283–288.
H. C. Lefevre, “The fiber-optic gyroscope: challenges to become the ultimate rotation-sensing technology,” Optical Fiber Technology, 2013, 19(6): 828–832.
I. R. Edu, R. Obreja, and T. L. Grigorie, “Current technologies and trends in the development of gyros used in navigation applications — a review,” in Proceedings of the 5th WSEAS International Conference on Communications and Information Technology, Greece, 2011, pp. 63–68.
L. Zhang, S. Ye, F. Liu, and S. D. Zhou, “Detection method for the singular angular velocity intervals of the interferometric fiber optic gyroscope scale factor,” Optik, 2016, 127(22): 10412–10420.
S. W. Lloyd, M. J. F. Digonnet, and S. H. Fan, “Near shot-noise limited performance of an open loop laser-driven interferometric fiber optic gyroscope,” SPIE, 2011, 7753: 7753A3.
J. Chamoun and M. J. F. Digonnet, “Pseudorandom-bit-sequence phase modulation for reduced errors in a fiber optic gyroscope,” Optics Letters, 2016, 41(24): 5664–5667.
J. Chamoun and M. J. F. Digonnet, “Aircraft-navigation-grade laser-driven FOG with Gaussian-noise phase modulation,” Optics Letters, 2017, 42(8): 1600–1603.
S. W. Lloyd, M. J. F. Digonnet, and S. H. Fan, “Modeling coherent backscattering errors in fiber optic gyroscopes for sources of arbitrary line width,” Journal of Lightwave Technology, 2013, 31(13): 2070–2078.
J. N. Chamoun and M. J. F. Digonnet, “Noise and bias error due to polarization coupling in a fiber optic gyroscope,” Journal of Lightwave Technology, 2015, 33(13): 2839–2847.
J. N. Chamoun, A. Evans, F. A. Mosca, and M. J. F. Digonnet, “Low noise and low drift in a laser-driven fiber optic gyroscope with a 1-km coil,” SPIE, 2014, 9157: 91570E.
I. S. Kim, P. Tantaswadi, and J. Blake, “Coherence-collapsed 1.3-µm multimode laser diode for the fiber-optic gyroscope,” Optics Letters, 1995, 20(7): 731–733.
T. Komljenovic, M. A. Tran, M. Belt, S. Gundavarapu, D. J. Blumenthal, and J. E. Bowers, “Frequency modulated lasers for interferometric optical gyroscopes,” Optics Letters, 2016, 41(8): 1773–1776.
B. Anderson, A. Flores, R. Holten, and I. Dajani, “Comparison of phase modulation schemes for coherently combined fiber amplifiers,” Optics Express, 2015, 23(21): 27046–27060.
K. Kikuchi, “Characterization of semiconductor-laser phase noise and estimation of bit-error rate performance with low-speed offline digital coherent receivers,” Optics Express, 2012, 20(5): 5291–5302.
D. He, Y. J. Wu, Y. L. Li, Z. R. Zhang, C. Peng, and Z. B. Li, “Stability improvement enabled by four-state modulation in dual-polarization fiber optic gyroscopes,” Optics Communications, 2019, 452: 68–73.
Acknowledgment
The authors are grateful to all of the colleagues who participated in this research.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
About this article
Cite this article
Yan, J., Miao, L., Shen, H. et al. Low-Drift Closed-Loop Fiber Optic Gyroscope of High Scale Factor Stability Driven by Laser With External Phase Modulation. Photonic Sens 12, 220304 (2022). https://doi.org/10.1007/s13320-022-0648-7
Received:
Revised:
Published:
DOI: https://doi.org/10.1007/s13320-022-0648-7