Effect of Low Frequency Vibration of Sensing Coil on Fiber Optic Current Sensors

FOCS current signals are measured by LIA when sensing coils under low frequency vibrations $(\mathbf{1 0} \sim \mathbf{2 0 H z})$. After FFT, it was found that the vibration frequency under $17 \mathrm{~Hz}$ has the greatest influence on the output results.