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光纤环形谐振腔作为谐振式陀螺的关键部件,其对频率的敏感程度决定了陀螺的性能。空芯光子晶体光纤作为一种新型光纤可以有效地抑制谐振式陀螺中的各种光学噪声,具有广阔的应用前景。采用光叠加法对空芯光子晶体光纤谐振腔各参数对谐振腔的Q值、陀螺灵敏度的影响进行了仿真。通过计算分析表明,当耦合器插入损耗为0.04,激光器线宽为60kHz,光纤长度为10 m时,存在一个最佳耦合系数0.123,使得陀螺灵敏度最小值为0.572 5°/h。
As a key component of the resonant gyroscope, the fiber ring resonator is sensitive to frequency and determines the performance of the gyroscope. As a new type of optical fiber, hollow-core photonic crystal fiber can effectively restrain various optical noises in resonant gyroscopes and has broad application prospects. The light superposition method was used to simulate the influence of various parameters of the hollow core photonic crystal fiber resonator on the Q value and the gyro sensitivity of the resonator. The calculation and analysis show that there is an optimum coupling coefficient of 0.123 when the insertion loss of the coupler is 0.04, the laser linewidth is 60 kHz, and the length of the optical fiber is 10 m, so that the minimum gyro sensitivity is 0.572 5 ° / h.