Advanced Bias Circuit for Single-photon Avalanche Photodiode Detectors

摘要

A bias circuit includes a light receiving element, a first capacitor for inducing passive quenching, a second capacitor for compensating a charge difference of the first capacitor, and a bias quenching circuit for performing a quenching operation. It is possible to realize an accurate bias quenching circuit by compensating an error according to a variation of a device.;