Long after-glow luminescent composites were fabricated by embedding phosphor SrAl2O4:Eu2+, Dy3+ powders into polymethyl-methacrylate (PMMA) using solution casting and hot-press methods. In the first method, PMMA were dissolved in chloroform forming a homogenous solution and the phosphor powders were doped into the solution with different volume fractions. Transparent samples were obtained by air drying the solution in a container. Their optical properties were studied by transmittance measurement and emission spectroscopy. For tensile and impact tests, samples were obtained by pressing mixed phosphor and PMMA powders at 190 degrees C. Based on these studies, the mechanical and optical properties of these composite were investigated.