Abstract
Abstract In this paper we introduction a new design programming to graphic user interface (GUI) in MATLAB v.6.5. this program gives to the user ability of using it in the design of the Erbium Doped Fiber Amplifier (EDFA) through the easiness, flexibility, and clear figures with multi options to help the user to choose and design the amplifier through the best gain and noise figure. Key Word:matlab v.6.5, GUI Programming, Erbium Doped Fiber Amplifier.
