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Chinese Optics Letters

Chinese Optics Letters


  • Editor: Zhizhan Xu
  • Vol. 10, Iss. 5 — May. 1, 2012
  • pp: 051404–

Online effective backscattering estimation for ring laser gyro

Zhenfang Fan, Hui Luo, Guangfeng Lu, and Shaomin Hu  »View Author Affiliations

Chinese Optics Letters, Vol. 10, Issue 5, pp. 051404- (2012)

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Lock-in phenomenon in ring laser gyroscopes is directly related to effective backscattering, which includes both backscattering and nonuniform loss. Effective backscattering often differs in different states and can only be reflected in a working state via online estimation in the working state. Moreover, effective backscattering can result in the intensity modulation of beams in the opposite directions. The effective backscattering parameters can be obtained by measuring the weak modulations in the intensity signals under different rotation rates and by using the curve-fitting method. This letter demonstrates the online estimation of backscattering.

© 2012 Chinese Optics Letters

OCIS Codes
(140.3370) Lasers and laser optics : Laser gyroscopes
(140.3430) Lasers and laser optics : Laser theory
(230.5160) Optical devices : Photodetectors

ToC Category:
Lasers and Laser Optics

Zhenfang Fan, Hui Luo, Guangfeng Lu, and Shaomin Hu, "Online effective backscattering estimation for ring laser gyro," Chin. Opt. Lett. 10, 051404- (2012)

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