Suppression of the optical crosstalk in a multi-channel silicon photomultiplier array

We propose and study a method of optical crosstalk suppression for silicon photomultipliers (SiPMs) using filters. demonstrate that attaching absorptive visible bandpass filters to the SiPM can substantially reduce crosstalk. Measurements suggest absorption near infrared light is important achieve this suppression. The proposed technique be easily applied suppress in SiPMs cases where filtering compatible with application.