The harmonics of the output waveforms of AMR magneticgrating ruler head were analyzed and the half harmonics' phenomena were observed for the first time.
对采集到的AMR磁栅尺磁头输出波形进行了付里叶谐波分析,发现了波形中的半次谐波现象。
2
A new magnetic field measurement based on the Faraday effect and the measurement of differential group delay (DGD) in fiber grating was proposed.