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利用光纤传感器的独特优点 ,用波长扫描法将 Fabry- Perot干涉仪 (以下简称 FPI)和传统加速度计相结合 ,得到了较好的分辨率。分析了在 FPI中多光束干涉对双光束干涉的影响。实验研究表明 ,它对由振动引起的位移 (加速度 )变化相当灵敏
By using the unique advantages of optical fiber sensor, the Fabry-Perot interferometer (hereinafter referred to as FPI) is combined with the traditional accelerometer by wavelength scanning method to get a better resolution. The effect of multi-beam interference on dual-beam interference in FPI is analyzed. Experimental studies have shown that it is quite sensitive to changes in displacement (acceleration) caused by vibration