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基于谐振式光纤陀螺系统要求窄线宽、高稳定性激光输出以满足谐振信号频差检测要求,设计了两种不同光路锁频系统并搭建了测试平台,利用波长计实时监控窄线宽激光器锁频前后两种状态下波长的变化情况。对方案二设置两种不同的仪器锁频参数,分别对激光器输出波长的锁频精度进行监控分析,得到不同设置参数可导致锁频精度降低1倍。两种方案测试结果均为锁频后的激光波长变化幅度仅为锁频前的0.2倍,且曲线频率变化光滑平缓,很大程度地压窄了窄线宽激光器输出波长变化幅度,波长变化稳定性得到了很大改善,提高了锁定信息反馈的实时性。进一步实施窄线宽激光谱线的压窄以及PI电路对窄线宽激光频率的有效快速跟踪锁定提供技术支撑。
Based on the resonant fiber gyroscope system requires narrow linewidth, high stability of the laser output to meet the requirements of the frequency difference detection of the resonant signal, designed two different optical frequency locking system and set up a test platform, the use of wavelength meter real-time monitoring narrow linewidth laser lock Wavelength changes before and after the two states. Two different frequency locking parameters are set for the second solution. The frequency locking accuracy of the output wavelength of the laser is monitored and analyzed respectively. Different setting parameters can result in the frequency doubling accuracy being doubled. The test results of the two schemes are that the frequency of the laser wavelength after frequency locking is only 0.2 times of that before the frequency locking, and the curve frequency changes smoothly and smoothly, greatly narrowing the output wavelength variation of a narrow linewidth laser and the wavelength variation is stable Sex has been greatly improved, improving the real-time nature of locking information feedback. Further implementation of narrow linewidth laser linewidth narrowing and PI circuit for narrow linewidth laser frequency effective fast track locking provide technical support.