Research on frequency stability of narrow linewidth laser in resonant optical gyro

Zou, Kang; Bi, Ran; Chen, Kan; She, Xuan; Zhang, Caini; Shu, Xiaowu

doi:10.1016/j.yofte.2020.102403

Optical Fiber Technology

2021

DOI: 10.1016/j.yofte.2020.102403

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Research on frequency stability of narrow linewidth laser in resonant optical gyro

Kang Zou

Ran Bi

Kan Chen

et al.

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2023

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Cited by 2 publications

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“…Equation (5) shows that the transfer function of random noise is a first-order inertial link with a low-pass filtering characteristic. When Q = 100, ω n = 2π × 337 Hz, the cutoff frequency of the low-pass filter is about 1.69 Hz, which leads to a serious attenuation of the noise amplitude during the process of random noise injection in mechanical vibration laser gyroscopes.…”

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confidence: 99%

Study on noise enhancement injection in laser gyroscopes based on random noise variation rates

Bai,

Ma,

et al. 2023

EPL

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In the process of injecting random noise into a mechanical vibration laser gyroscope, the amplitude of the injected noise decays significantly as the noise frequency increases. To address this phenomenon, theoretical research was conducted on the transfer function of random noise in a mechanical vibration laser gyroscope, and a transfer function of random noise enhancement injection efficiency was established, which is related to the damping coefficient and resonant frequency. A method for enhancing random noise injection efficiency based on the rate of random noise level variation was proposed, and a circuit system for random noise enhancement injection in mechanical vibration laser gyroscopes was designed. The results showed that compared with the original random noise injection technology, random noise enhancement injection technology can effectively suppress the serious attenuation of high-frequency random noise amplitude, increase random noise injection efficiency by about 41.27%, reduce the random walk of the laser gyroscope's angle by about 17.73%, and improve its accuracy by about 27.02%. Random noise enhancement injection technology provides an important reference for improving the performance of mechanical vibration laser gyroscopes.

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confidence: 99%

Study on noise enhancement injection in laser gyroscopes based on random noise variation rates

Bai,

Ma,

et al. 2023

EPL

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表征稳频半导体激光器频率特性的方法

Li Shanshan,

Yang Jiewei,

Yang Tianxin

et al. 2023

红外与激光工程

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Research on frequency stability of narrow linewidth laser in resonant optical gyro

Cited by 2 publications

References 18 publications

Study on noise enhancement injection in laser gyroscopes based on random noise variation rates

Study on noise enhancement injection in laser gyroscopes based on random noise variation rates

表征稳频半导体激光器频率特性的方法

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