A novel optical accelerometer based on laser self-mixing effect is presented and experimentally demonstrated, which
consists of a mass-loaded elastic-beam assembly and laser self-mixing interferometer. Under external acceleration, an
inertial force is applied to the mass, flexible beams deflect from their equilibrium position. The deflection can be read
out by the self-mixing interferometer. In order to reduce the impact of higher harmonic, wavelet analysis is introduced to
remove singular points. Preliminary results indicate that the resolution is 0.19μg/Hz<sup>1/2</sup> within a bandwidth of 100Hz. The
optical accelerometer has the potential to achieve high-precision, compact accelerometers.