Resonant Micro-Optical Gyroscope Based on Optical Switch to Suppress Backscattering Noise

被引：0
|
作者：
Qian W. [1 ]
Wu C. [1 ]
Lin Y. [1 ]
Ma H. [1 ]
机构：
[1] School of Aeronautics and Astronautics, Zhejiang University, Hangzhou
来源：
Zhongguo Jiguang/Chinese Journal of Lasers | 2020年 / 47卷 / 10期
关键词：
Backscattering noise; Optical switch; Resonant micro-optical gyroscope; Sagnac effect; Sensors; Time division multiplexing technique;
D O I：
10.3788/CJL202047.1010003
中图分类号：
学科分类号：
摘要：
To improve the reciprocity of the system and effectively suppress the influence of backscattering noise on resonant micro-optical gyroscope (RMOG) detection accuracy, an optical switch-based RMOG is proposed. First, we analyze and test the influence of backscattering noise in the actual RMOG system; the same frequency modulation is performed on both clockwise and counterclockwise lightwave signals, which are time-division multiplexed using a 1×2 optical switch to alternate the laser output between clockwise and counterclockwise separating the signal and backscattered light in time and reducing the influence of backscattering noise on RMOG detection accuracy; furthermore, the channel crosstalk of the optical switch and the effect of switching time on backscattering noise are analyzed. The experimental results show that the optical switch can reduce the backscattering noise, and the degree of reduction is limited by the switch crosstalk. The switching time of the switch needs to be optimized for the time constant of the optical waveguide-ring resonator and the loop lock time. © 2020, Chinese Lasers Press. All right reserved.
引用
收藏
相关论文
共 15 条
  • [1] Ma H L, Jin Z H, Ding C, Et al., Optimal design of ring resonator in silica optical waveguide, Chinese Journal of Lasers, 32, 10, pp. 1330-1332, (2005)
  • [2] Yang Y H, Yang F L, Lu L, Et al., Research on interferometer photonic crystal fiber optic gyroscope technology, Acta Optica Sinica, 38, 3, (2018)
  • [3] Ma H L, Zhang J J, Wang L L, Et al., Development and evaluation of optical passive resonant gyroscopes, Journal of Lightwave Technology, 35, 16, pp. 3546-3554, (2017)
  • [4] Ciminelli C, Dellolio F, Campanella C, Et al., Photonic technologies for angular velocity sensing, Advances in Optics and Photonics, 2, 3, pp. 370-404, (2010)
  • [5] Wang Q W, Feng L S, Li H, Et al., Enhanced differential detection technique for the resonator integrated optic gyro, Optics Letters, 43, 12, pp. 2941-2944, (2018)
  • [6] Zhang J J, Ma H L, Li H Z, Et al., Single-polarization fiber-pigtailed high-finesse silica waveguide ring resonator for a resonant micro-optic gyroscope, Optics Letters, 42, 18, pp. 3658-3661, (2017)
  • [7] He Y M, Yang F H, Yan W, Et al., Phase modulation techniques for suppressing backscattering noise in resonator integrated optic gyroscopes, Chinese Optics, 12, 6, pp. 1403-1417, (2019)
  • [8] Ma H L, He Z Y, Hotate K., Reduction of backscattering induced noise by carrier suppression in waveguide-type optical ring resonator gyro, Journal of Lightwave Technology, 29, 1, pp. 85-90, (2011)
  • [9] Khial P P, White A D, Hajimiri A., Nanophotonic optical gyroscope with reciprocal sensitivity enhancement, Nature Photonics, 12, 11, pp. 671-675, (2018)
  • [10] Hu Z F, Jiang Z G, Wang J F, Et al., Resonator fiber optic gyros with light time-division input and multiplexing output in clockwise and counterclockwise directions, Chinese Optics Letters, 18, 3, (2020)
12