we have studied the growth of self-assembled quantum dots (QDs) using Stranski-Krastanow growth mode and strain-reducing layers for long-wavelength applications with narrow linewidth in photoluminescence (PL) emission. InAs QDs were grown on the strained superlattices, GaAs(2nm)/InxGa1-xAs(2nm)(x10) with x = 0.1, 0.32 and 0.52 and capped with same strained superlattices. Their optical properties related to the integrated PL intensity and peak positions were investigated with different temperature ranging from 11 similar to 325 K.