具有增强热稳定性的导航级干涉式空芯反谐振光纤陀螺仪。

Navigation-grade interferometric air-core antiresonant fibre optic gyroscope with enhanced thermal stability.

作者信息

Li Maochun, Sun Yizhi, Gao Shoufei, Zhao Xiaoming, Hui Fei, Luo Wei, Hu Qingbo, Chen Hao, Wu Helin, Wang Yingying, Yan Miao, Ding Wei

机构信息

Tianjin Key Laboratory of Quantum Precision Measurement Technology, Tianjin Navigation Instruments Research Institute, Tianjin, 300131, China.

Guangdong Provincial Key Laboratory of Optical Fibre Sensing and Communication, Institute of Photonics Technology, Jinan University, Guangzhou, 510632, China.

出版信息

Nat Commun. 2025 Apr 14;16(1):3449. doi: 10.1038/s41467-025-58381-6.

DOI:10.1038/s41467-025-58381-6

PMID:40229249

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11997165/

Abstract

We present a groundbreaking navigation-grade interferometric air-core fibre optic gyroscope (IFOG) using a quadrupolar-wound coil of four-tube truncated double nested antiresonant nodeless fibre (tDNANF). This state-of-the-art tDNANF simultaneously achieves low loss, low bend loss, single-spatial-mode operation, and exceptional linear polarization purity over a broad wavelength range. Our 469 m tDNANF coil demonstrated a polarization extinction ratio (PER) of ~20 dB when illuminated by an amplified spontaneous emission (ASE) source spanning 1525-1565 nm. Under these conditions, the gyro archives an angular random walk (ARW) of 0.00383 deg h and a bias instability (BI) drift of 0.0017 deg h, marking the first instance of navigation-grade performance in air-core FOGs. Additionally, we validated the low thermal sensitivity of air-core FOGs, with reductions of 9.24/10.68/6.82 compared to that of conventional polarization-maintaining solid-core FOGs of the same size across various temperature ranges. These results represent a significant step towards long-standing promise of high-precision inertial navigation applications with superior environmental adaptability.

摘要

我们展示了一种开创性的导航级干涉式空芯光纤陀螺仪（IFOG），它使用了由四管截断双嵌套无节点光纤（tDNANF）构成的四极缠绕线圈。这种先进的tDNANF在宽波长范围内同时实现了低损耗、低弯曲损耗、单空间模式运行以及出色的线性偏振纯度。我们的469米tDNANF线圈在由1525 - 1565纳米的放大自发辐射（ASE）源照射时，展现出约20分贝的偏振消光比（PER）。在这些条件下，该陀螺仪实现了0.00383度/小时的角随机游走（ARW）和0.0017度/小时的偏置不稳定性（BI）漂移，这标志着空芯光纤陀螺仪首次达到导航级性能。此外，我们验证了空芯光纤陀螺仪的低热灵敏度，在不同温度范围内，与相同尺寸的传统保偏实心光纤陀螺仪相比，其热灵敏度降低了9.24/10.68/6.82。这些结果朝着高精度惯性导航应用长期以来所期望的具有卓越环境适应性迈出了重要一步。