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The basic barricade to high-speed communication systems and long distance transmission over the installed standard single mode fiber at 1.55 μm is the linear chromatic dispersion and nonlinearities. Both parameters have been of great concern as these parameters confine the overall efficiency of the system.FBG are being used as dispersion compensator and EDFA is used for amplification of the signal. The objective of this paper is to analyze the performance of two different modulation schemes i.e. NRZ and RZ modulation format at 10 GB/s.NRZ and RZ modulation format is the scheme used to avoid intersymbol interference (ISI) on an optical carrier wave for transmission over optical fiber. Each modulation method has its own advantages and disadvantages for the particular channel conditions. The performance of NRZ and RZ in optical communication system with single channel over single mode fiber is investigated by simulation. Then, based on modulated outputs of RZ and NRZ codes, a comprehensive comparison is developed in terms of Q factor, noise figure, spectrum, eye diagrams and average input power to establish the merits and demerits of the RZ and NRZ codes formats in short as well as long haul optical communication system.

Analysis of Pulse Code Modulation Formats in High Speed Optical Transmission System Using FBG and EDFA.