This paper describes a comparison of photon detection efficiency and optical
crosstalk measurements performed by three partners: Geneva University, Catania
Observatory and Nagoya University. The measurements were compared for three
different SiPM devices with different active areas: from 9 mm2 up to 93.6
mm2 produced by Hamamatsu. The objective of this work is to establish the
measurements and analysis procedures for calculating the main SiPM parameters
and their precision. This work was done in the scope of SENSE project which
aims to build roadmap for the last developments in field of sensors for low
light level detection