METHOD FOR STABILIZING THE AVALANCHE MODE OF A PHOTODIODE Russian patent published in 2022 - IPC G01R19/175 G01S7/48 

FIELD: optical signals reception.

SUBSTANCE: invention relates to the reception of optical signals, in particular to the technique of receiving signals using avalanche photodiodes, and can be used in location, communications and other photoelectronic systems. A method for stabilizing the avalanche mode of a photodiode, including threshold processing of signals and the formation of output pulses using a threshold device when the received signal exceeds a predetermined response threshold U_thr1, while controlling the frequency f of microplasma pulses relative to the threshold U_thr2>U_thr1, and the bias voltage U_cm of the photodiode is gradually increased to the level U_cm , at which the frequency f first increases to the maximum value f_max, and then decreases to the maximum allowable value f_min, after which they start receiving signals. The operating threshold U_thr1 of the threshold device can be set using noise automatic threshold adjustment.

EFFECT: maximum sensitivity is achieved in all operating conditions, taking into account microplasma breakdowns and normal noise.

1 cl, 3 dwg