In order to solve the problems of low sensitivity for traditional interference fiber-optic gyroscopes at low velocity and the existence of measurement dead zone for slow-light gyro, a composite fiber-optic gyroscope that consists of a Sagnac loop and a resonant loop is proposed in this paper. Since it combines the characteristics of the two gyroscopes, the composite gyro can meet the requirements of high sensitivity at low rotation velocity and no measurement dead zone. Loss has a significant influence on the sensitivity of the gyroscope, while the transmission coefficient also has a certain influence on it. The relative sensitivity in the low-velocity and high-velocity regions can be flexibly adjusted by tuning the length ratio of the Sagnac loop and the resonant loop to meet the practical application requirements. The proposed composite gyroscope can provide potential applications in high precision, miniaturization, and integration of the fiber-optic gyroscope.

中文翻译：

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复合陀螺仪在低速区域无死区，灵敏度高

为了解决传统干涉式光纤陀螺仪低速灵敏度低，慢光陀螺仪存在测量死区的问题，提出了一种由Sagnac环和谐振环组成的复合光纤陀螺仪。在本文中。由于结合了两个陀螺仪的特性，复合陀螺仪可以在低转速和无测量死区的情况下满足高灵敏度的要求。损耗对陀螺仪的灵敏度有重要影响，而透射系数也对其有一定影响。可以通过调整Sagnac环路和谐振环路的长度比来灵活地调节低速和高速区域的相对灵敏度，以满足实际应用的要求。