A new fiber optic, pulse pressure sensor with a Bragg grating, in the structure of which the operating principle of the
Hopkinson bar is applied, is presented in the paper. The delivery of the measured pressure to the sensor is realized by
means of a measuring head with truncated cone, made of silica glass and fusion-spliced to the grating's fiber. The optical
and the electronic setup of the sensor is given. The sensor was employed to measure pulse pressure generated by an
electric discharge in water. The obtained measurement results and the conclusions arising from them are presented.