In order to realize a high accuracy seismic exploration in the high electro-magnetic area
the three-component photoelastic waveguide accelerometer is designed. First
based on the photoelastic effect
the integrated optical circuit is designed to measure the three-orthogonal components of acceleration. The combined three-component simple harmonic vibrator is designed to reduce the cross-talk of the acceleration component. Then
based on the variation law of LiNbO3 waveguide phase
the cross-axise sensitivity and transverse sensitivity ratio(TSR)are analysed. Finally
The total structure of the sensor is designed. Experimental results indicate that the sensor’s natural frequency is 3500 Hz; the transverse sensitivity ratio is 0.11%. It can satisfy the sensor requirements of high ccuracy seismic exploration.