Fundamenal limitations on introducing low cost optical sources in hybrid 40/100G PON

Most of the considerations of the benefits of Next Generation Passive Optical networks (NG PON) have been focusing on opportunities associated with bandwidth availability. This article describes the fundamental limitations of low cost optical sources combined with current existing optic fiber in the network to resolve challenges in achieving targeted high data rates of 40Gb/s and 100 Gb/s in NG PON. A hybrid model of wavelength division multiplexing using 10 Gb/s optical sources with relatively large spectrum has been simulated with COMSIS. Key parameters as bandwidth at -3dB of the sources, wavelength division multiplexing scheme, optimal range and number of users are considered. Analysis that emerge from this work can serve as a basis for brainstorming on aspects of migration to the groups responsible for standardization.