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| Main Authors: | , , , , , , , , , , , |
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| Format: | Preprint |
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2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2407.20598 |
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| _version_ | 1866917736755494912 |
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| author | Li, Maochun Gao, Shoufei Sun, Yizhi Zhao, Xiaoming Luo, Wei Hu, Qingbo Chen, Hao Wu, Helin Hui, Fei Wang, Yingying Yan, Miao Ding, Wei |
| author_facet | Li, Maochun Gao, Shoufei Sun, Yizhi Zhao, Xiaoming Luo, Wei Hu, Qingbo Chen, Hao Wu, Helin Hui, Fei Wang, Yingying Yan, Miao Ding, Wei |
| contents | 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 0.0038 deg h-1/2 and a bias-stability (BS) drift over 8500 s of 0.0014 deg h-1, 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_20598 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Navigation-grade interferometric air-core antiresonant fibre optic gyroscope with enhanced thermal stability Li, Maochun Gao, Shoufei Sun, Yizhi Zhao, Xiaoming Luo, Wei Hu, Qingbo Chen, Hao Wu, Helin Hui, Fei Wang, Yingying Yan, Miao Ding, Wei Optics Applied Physics 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 0.0038 deg h-1/2 and a bias-stability (BS) drift over 8500 s of 0.0014 deg h-1, 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. |
| title | Navigation-grade interferometric air-core antiresonant fibre optic gyroscope with enhanced thermal stability |
| topic | Optics Applied Physics |
| url | https://arxiv.org/abs/2407.20598 |