Abstract In this paper ,we use a fiber mode coup领 method to analyse a fiber optical
velocity interferometer system for any reflector and use it to measure low velocity impact
specimens with diffuse reflecting surface. The experiment results agree with theoritcal
analysises fairly and the profile of velocity vs time is first obtained in the experiment .
Key words fibre mode coup领 method , optical velocity interferometer , low velocity impact ,
diffuse reflecting surface 全光纤多功能研发平台
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