Andac Senol Tugba, Akcaalan Onder, Yertutanol Aylin, Ozbay Ekmel
Department of Physics, Bilkent University, 06800, Ankara, Turkey.
Nanotechnology Research Center (NANOTAM), Bilkent University, 06800, Ankara, Turkey.
Sci Rep. 2024 Apr 20;14(1):9076. doi: 10.1038/s41598-024-59330-x.
It is a well-known fact that interferometric fiber optic gyroscopes (IFOGs) are easily distorted by thermal effects and distortion results in the degradation of the performance of these sensors. Changing the fiber coil geometry, increasing the winding symmetry, adding fiber buffer layers around the fiber coil, using different modulation methods for multifunctional integrated optic chips, and using special types of fibers, such as photonic crystal fibers, are some alternative solutions for preventing this degradation. This paper, theoretically and experimentally, investigates not only how different types of fiber coil winding methods behave under different rates of temperature change but also presents a novel method, to the best of our knowledge, to eliminate the Shupe effect, without violating the simplest IFOG scheme. This method rules out the importance of the winding symmetry epochally and the need of any extra treatment for the fiber coil to increase the thermal performance of the system. Regardless of the symmetry of the fiber coil winding, the rate error due to the Shupe effect can be reduced to about h for any rate of temperature change with this new method according to the experimental results.
众所周知，干涉式光纤陀螺仪（IFOG）很容易受到热效应的影响而发生畸变，这种畸变会导致这些传感器的性能下降。改变光纤线圈的几何形状、增加绕组对称性、在光纤线圈周围添加光纤缓冲层、对多功能集成光学芯片使用不同的调制方法以及使用特殊类型的光纤（如光子晶体光纤），是防止这种性能下降的一些替代解决方案。本文通过理论和实验研究了不同类型的光纤线圈缠绕方法在不同温度变化率下的表现，并且据我们所知，还提出了一种新颖的方法来消除舒佩效应，同时不违反最简单的IFOG方案。该方法有时会排除绕组对称性的重要性，以及对光纤线圈进行任何额外处理以提高系统热性能的必要性。根据实验结果，使用这种新方法，无论光纤线圈缠绕的对称性如何，对于任何温度变化率，由于舒佩效应导致的速率误差都可以降低到约h。
