Zhang Chunxi, Zhang Zhihao, Xu Xiaobin, Cai Wei
School of Instrument Science and Opto-electronics Engineering, Beihang University, Beijing 100191, China.
Sensors (Basel). 2018 Feb 13;18(2):567. doi: 10.3390/s18020567.
In this paper, we propose a small-diameter polarization-maintaining solid-core photonic crystal fiber. The coating diameter, cladding diameter and other key parameters relating to the thermal properties were studied. Based on the optimized parameters, a fiber with a Shupe constant 15% lower than commercial photonic crystal fibers (PCFs) was fabricated, and the transmission loss was lower than 2 dB/km. The superior thermal stability of our fiber design was proven through both simulation and measurement. Using the small-diameter fiber, a split high precision fiber optic gyro (FOG) prototype was fabricated. The bias stability of the FOG was 0.0023 °/h, the random walk was 0.0003 °/ h , and the scale factor error was less than 1 ppm. Throughout a temperature variation ranging from -40 to 60 °C, the bias stability was less than 0.02 °/h without temperature compensation which is notably better than FOG with panda fiber. As a result, the PCF FOG is a promising choice for high precision FOG applications.
在本文中，我们提出了一种小直径保偏实心光子晶体光纤。研究了与热性能相关的涂层直径、包层直径等关键参数。基于优化后的参数，制备出了舒佩常数比商用光子晶体光纤（PCF）低15%的光纤，且传输损耗低于2dB/km。通过仿真和测量均证明了我们所设计光纤具有卓越的热稳定性。利用这种小直径光纤，制作了一个分立高精度光纤陀螺（FOG）原型。该光纤陀螺的偏置稳定性为0.0023°/h，随机游走为0.0003°/h，标度因数误差小于1ppm。在-40至60°C的温度变化范围内，无需温度补偿时偏置稳定性小于0.02°/h，这明显优于采用熊猫型光纤的光纤陀螺。因此，光子晶体光纤光纤陀螺是高精度光纤陀螺应用的一个有前景的选择。
