A resonant fiber optic gyroscope frequency locking device
A frequency locking, fiber optic gyroscope technology, applied in the field of inertial navigation, can solve the problems of insufficient accuracy of the frequency locking method of the resonant fiber optic gyroscope laser adjustment, and the influence of the sub-polarization state of the resonator cavity on the detection accuracy, so as to reduce the size and power consumption of the gyroscope. Simple structure and high reliability
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[0019] The present invention will be further described in detail with reference to the accompanying drawings and embodiments.
[0020] The present invention is a single polarization resonant fiber optic gyroscope frequency locking device with simple structure and high frequency locking precision, such as figure 1 As shown, it includes a light source drive module 1, a narrow linewidth laser light source 2, a Y waveguide modulator 3, a first modulation module 4, a polarization-maintaining fiber resonator 5, a signal demodulation detection module 6, a second modulation module 7, a digital output Module 8, lithium niobate direct waveguide modulator 9.
[0021] The light source driving module 1 is connected to and drives the narrow linewidth laser light source 2, and the Y waveguide modulator 3 is connected with the narrow linewidth laser light source 2 through an optical fiber connector, while the first modulation module 4 applies high-frequency phase modulation on the Y waveguide...
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