Opt Lett. 2023 Feb 15;48(4):859-862. doi: 10.1364/OL.481009.
High-performance angular accelerometers are essential for precise dynamics control of aircraft, satellites, etc. Here, we propose, for the first time to the best of our knowledge, an angular accelerometer based on a dual-polarization fiber-optic Sagnac interferometer, which exhibits relatively high sensitivity and a broad bandwidth. The experimental results show that the angular accelerometer achieves a flat frequency response in the bandwidth range of 0.01-100 Hz. The sensitivity reaches 6.6 × 10rad/s/Hz. In addition, the proposed fiber-optic angular accelerometer does not rely on any mechanical structure and has strong environmental adaptability. This research provides a feasible solution for the design and implementation of new high-performance angular accelerometers, which contributes to their development in the fields of inertial navigation and rotational seismology.
高性能角加速度计对于飞机、卫星等的精确动力学控制至关重要。在这里，我们首次提出了一种基于双偏振光纤萨格纳克干涉仪的角加速度计，该角加速度计具有较高的灵敏度和较宽的带宽。实验结果表明，角加速度计在 0.01-100Hz 的带宽范围内具有平坦的频率响应。其灵敏度达到 6.6×10rad/s/Hz。此外，所提出的光纤角加速度计不依赖任何机械结构，具有很强的环境适应性。这项研究为新型高性能角加速度计的设计和实现提供了可行的解决方案，有助于它们在惯性导航和旋转地震学等领域的发展。
