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介绍了应用于光纤陀螺的掺铒光纤超荧光光源的研究现状,比较分析了掺铒光纤光源5种主要结构的优缺点,在此基础上得出了光纤放大器结构的光源既可以有效提高光纤陀螺的检测精度和稳定性,又可以降低成本。针对光纤放大器光源,分别分析了泵浦功率、泵浦波长、反馈以及铒纤温度对其平均波长稳定性的影响。为了消除反馈对光纤放大器光源平均波长稳定性的影响,根据超荧光光源的偏振态效应,在光源中加入了偏振器来控制反馈的偏振态,从而降低了反馈对光源平均波长稳定性的影响,并采用长周期光纤光栅作为滤波器,有效地提高了光纤放大器光源的波长稳定性。
This paper introduces the research status of the erbium-doped fiber super-fluorescence light source used in fiber optic gyroscope, compares the advantages and disadvantages of five main structures of erbium-doped fiber light source, and concludes that the light source with fiber amplifier can effectively improve the performance of fiber optic gyroscope The detection accuracy and stability, but also can reduce costs. For the fiber amplifier light source, the influence of pump power, pump wavelength, feedback and erbium fiber temperature on the average wavelength stability are analyzed. In order to eliminate the influence of feedback on the average wavelength stability of the fiber amplifier, a polarizer is added to the light source to control the polarization state of the feedback according to the polarization effect of the super-fluorescence light source, thereby reducing the influence of feedback on the average wavelength stability of the light source, And the use of long-period fiber grating as a filter, effectively improve the optical fiber amplifier light source wavelength stability.