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分析研究了光纤激光陀螺系统的工作原理和基本构成,根据系统中各器件的性能指标对光纤激光陀螺的基本结构、性能参数进行了计算机模拟优化设计。采用双向激射双向输出结构保证光路的互易性。利用光纤环形器、掺铒光纤和光纤Bragg光栅实现滤模、选模和压缩线宽功能。针对其输出信号特点,提出利用偏振分束的方式判断陀螺工作转动方向,并最终计算陀螺转动角速度的信号处理方案。
The working principle and basic structure of fiber laser gyro system are analyzed and studied. The basic structure and performance parameters of fiber laser gyro are optimized by computer simulation according to the performance indexes of each device in the system. Two-way laser bidirectional output structure to ensure the reciprocity of the optical path. The use of fiber circulator, erbium-doped fiber and fiber Bragg grating filter mode, mode selection and compression line width function. According to the characteristics of its output signal, a signal processing scheme is proposed to determine the rotational direction of the gyroscope by means of polarization splitting and to finally calculate the rotational angular velocity of the gyroscope.