Effect of Different Adhesives for the Fiber Coil with Skeleton on FOG Scale Factor Temperature Sensitivity

Abstract

Choosing four kinds of adhesives (A, B, C and D) with different parameters, we mainly analyze the influence of the thermal expansion coefficient and elastic modulus of adhesives on the variation in the fiber coil size based on ANSYS software. By measuring fiber coil loss, fiber coil polarization crosstalk and scale factor temperature sensitivity of FOGs, it has been found that A adhesive is the best for FOGs that use the fiber coil with skeleton. And the scale factor temperature sensitivity is only 23.52 ppm/℃ in the temperature range from −40 °C to 60 °C, which shows that correlation between scale factor and temperature is better than that of others. Moreover, the compensated scale factor variation of the FOG with A adhesive will reach to 200 ppm in the temperature range from −40 °C to 60 °C, which improves the performance by 60%.