Design of a photoelectric conversion system for pulse laser fuze

For responding to the weak signal and narrow pulse width feature of echo signals in pulse laser fuze and getting enough no distortion information of objectives,the feature of photodiode detector and the bandwidth of amplifier circuit were analyzed,and then an practical photoelectric conversion system was designed,including the PIN detector circuit,pre-amplifier circuit and main amplifier circuit.Through the actual experiments and simulation with the TINA and MULTISIM softwares,the bandwidth was 61.089MHz and the gain was 72.14dB.The result shows that the echo signal with pulse width more than 10ns was amplified with low noise and no distortion,which meets the designed requirements.The processed signals match the need of the following control system.