Journal
OPTICS LETTERS
Volume 46, Issue 1, Pages 46-49Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.410387
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Funding
- European Research Council [682724]
- EPSRC [EP/N00762X/1] Funding Source: UKRI
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The research successfully improved the stability of the hollow-core fiber optic gyroscope using high-performance fiber technology, nearing the level required for civil aircraft navigation.
Resonator fiber optic gyroscope (RFOG) performance has hitherto been limited by nonlinearity, modal impurity, and backscattering in the sensing fibers. The use of hollowcore fiber (HCF) effectively reduces nonlinearity, but the complex interplay among glass and air-guided modes in conventional HCF technologies can severely exacerbate RFOG instability. By employing high-performance nested anti-resonant nodeless fiber, we demonstrate long-term stability in a hollow-fiber RFOG of 0.05 deg/h, nearing the levels required for civil aircraft navigation. This represents a 3 x improvement over any prior hollow-core RFOG and a factor of 500 x over any prior result at integration times longer than 1 h.
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