Aiming at problem of transverse interference of fiber Bragg grating（ FBG） vibration sensor in application process

anti-transverse interference effect is achieved by optimizing sensor probe structure and fit dimension.ANSYS modal analysis shows that the sensor has good ability of suppressing cross sensitivity that the second modal mode

third modal mode and fourth modal resonant frequency is considerably greater than the first modal resonant frequency.Vibration loading experimental result indicates that when impelled by same magnitude acceleration

the proportion of output signal from transverse makes 3.47 % of the axially one

which demonstrates the sensor has good anti-transverse interference capacity.