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中文摘要：
谐振式光纤陀螺由于其在小型化、集成化和高精度等方面比干涉型光纤陀螺占有优势,引起了国内外研究机构的广泛关注,而光纤环形谐振腔作为光纤陀螺的核心敏感部件对陀螺信号的输出至关重要.本文分析对比了半长1.10 m,定长2.2 m,保偏耦合器偏振消光比为20 dB,分光比为50∶50的光纤环腔在相同室温条件下,不同匝数谐振谱线的谐振深度p、半高全宽（FWHM）以及光纤陀螺的输出信号包括动态范围、频率带宽、标度因数、系统极限灵敏度的各项陀螺关键指标,为定长保偏光纤环腔作为光学陀螺的核心部件提供相关指导.
英文摘要：
Resonator fiber optic gyro due to its miniaturization,integration and high-precision and other superiority than interferometric fiber optic gyroscope,attracted wide attention of domestic and foreign research institutions,fiber ring resonator as the core sensitive component of FOG is important for gyro output signal.In the experiment,wavelength is 1 550 nm,perimeter of fiber ring resonator that polarization extinction ratio of polarizationmaintaining coupler is 20 dB and spectral ratio of 50∶ 50,is 2.2 m.Compared the indicators of fiber ring resonator of different turn number under the same environment,such as resonance depth,FWHM and gyro output signal ineluding dynamic range,frequency bandwidth,scale factor and limited sensitivity,then obtained the results.The results provides experimental guide for the research of fixed-length polarization-maintaining optical fiber ring cavity as the core component of optical gyro.
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