The application of optoelectronic feedback in addressing various problems i
n smart pixel arrays is considered. Special attention is paid to issues ass
ociated with light sources such as device nonlinearity and nonuniformity. M
oreover, new classes of smart pixel applications taking advantage of the us
eful properties of optoelectronic feedback are discussed. Experimental resu
lts from a demonstration chip based on monolithic integration of optoelectr
onic devices on GaAs substrate are presented.