Optical communication technology has been developed rapidly to achieve larger transmission capacity and longer transmission distance. In this paper we demonstrated optical time division multiplexing extended reach 10 Gb/s passive optical network (PON) architecture of 100 km length with 1:128 split ratio. The 100 km system is enabled by the use of corning nexcore fiber and corning SMF-28 fiber with attenuation of 0.21 dB/km and downstream transmission with NRZ and duo binary format, and signals are demultiplexed by semiconductor optical amplifiers (SOA's). SOA can be used for both amplification and attenuation of an optical signal, by turning the gain on and off. The TDM-PON takes advantage of the development of digital transmission and synchronous optical multiplexing. How much amount of power and loss is required in the fiber link calculated by using link power budget analysis.