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宽谱光源已成为干涉式光纤陀螺(I-FOG)的不二之选。理论上讲谱宽越宽,越有利于抑制I-FOG中的瑞利散射误差和克尔效应误差,但过宽的谱宽却会影响光纤陀螺标度因数的稳定性。如何选择谱宽合适的光源,是I-FOG研究中必须解决的问题。针对这一问题,该文从瑞利散射误差、克尔效应误差和光纤陀螺标度因数的稳定性出发,论述了光源谱宽对干涉式光纤陀螺的影响,分析了限制谱宽增加和减小的因素。结果表明,光源的谱宽不宜过宽或过窄,需要根据实际情况合理选择光源谱宽。
Wide-spectrum light sources have become the perfect choice for interferometric fiber optic gyros (I-FOG). In theory, the wider the spectral width, the more conducive to suppress the I-FOG Rayleigh scattering error and Kerr effect error, but too broad spectral width will affect the stability of the FOG scaling factor. How to choose a suitable light source for the spectral width is a problem that must be solved in the I-FOG research. In order to solve this problem, the paper discusses the influence of the spectral width of the light source on the interferometer fiber optic gyroscope from the Rayleigh scattering error, the Kerr effect error and the scaling factor of the fiber optic gyroscope. It is analyzed that the limitation of spectrum width increase and decrease the elements of. The results show that the spectral width of the light source should not be too wide or too narrow, and the light source spectral width needs to be properly selected according to the actual situation.