Using the transversely isotropic characteristics of the coil to calculate the thermal-drift parameters of a fiber-optic gyroscope

Esipenko, I.A., Lykov, D.A., Smetannikov, O.Y.

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Publication in Journal of Optical Technology

For Russian citation (Opticheskii Zhurnal):

Есипенко И.А., Лыков Д.А., Сметанников О.Ю. Применение трансверсально-изотропных характеристик контура для расчета параметров теплового дрейфа волоконно-оптического гироскопа // Оптический журнал. 2019. Т. 86. № 5. С. 36–44. http://doi.org/10.17586/1023-5086-2019-86-05-36-44

Esipenko I.A., Lykov D.A., Smetannikov O.Yu. Using the transversely isotropic characteristics of the coil to calculate the thermal-drift parameters of a fiber-optic gyroscope [in Russian] // Opticheskii Zhurnal. 2019. V. 86. № 5. P. 36–44. http://doi.org/10.17586/1023-5086-2019-86-05-36-44

For citation (Journal of Optical Technology):

I. A. Esipenko, D. A. Lykov, and O. Y. Smetannikov, "Using the transversely isotropic characteristics of the coil to calculate the thermal-drift parameters of a fiber-optic gyroscope," Journal of Optical Technology. 86(5), 289-295 (2019). https://doi.org/10.1364/JOT.86.000289

Abstract:

This paper discusses the possibility of going from a structurally inhomogeneous model of the coil to a homogeneous transversely isotropic medium when calculating the thermal drift of a fiber-optic gyroscope in order to economize on computational resources. The transition to the effective characteristics is carried out by means of a series of computational experiments using the method of finite elements and analytic formulas. Satisfactory matching between the models of the materials studied here was demonstrated during the subsequent computation of the thermal drift. Calculated results in accordance with the experimental data are supplied for two layouts of the winding of the fiber coil—quadrupolar and octupolar. It is shown that using a material with effective characteristics reduces the requirement for RAM and calculation time by an order of magnitude.

Keywords:

fiber-optic gyroscope, fiber coil, quadrupolar winding layout, octupolar winding layout, thermal drift, pparent angular velocity, thermooptic effect, elastooptic effect, transversely isotropic model of the material, quasi-steady-state problem of thermoelasticity, method of finite elements

OCIS codes: 060.2800, 060.2290

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