A Method of Measuring the Parameters of the Response Speed of Photodetectors

Problems arising in the measurement of the parameters of the response speed of current broadband photodetectors by the method based on measurement results of the rise time of transitional characteristics. A method is proposed for quantitative estimate of response speed, using the results of the determination of impulse response of a photodetector being examined. A pulsed fiber optic laser operating in a condition of self-synchronization of modes, and providing the generation of ultrashort (approximately 3 ps) optical pulses, serves as the source of measurement signals. A measurement installation that makes it possible to implement the proposed method of measurement is provided. Certain results of experimental testing of the method are given.