No abstract

An interferometric fiber optic vibrometer designed to measure vibrations caused by ballistic impacts was designed, constructed and tested. The system employs a Mach-Zehnder interferometer with a passive stabilization design scheme. By eliminating high-speed electronic circuitry, the transient response of the system is improved, and the cost and complexity of the system is reduced. The vibrometer was designed to be sensitive to vibrations at velocities of 1m/s.