Influence of Self-Phase Modulation on 8 and 16-Channel DWDM System with NRZ and Miller Coding

This article is focused SPM (Self-Phase Modulation), whic affects the signal transmision in fully optical communication systems. With the advent of WDM (Wavelength Division Multiplexing) the optical power in optical fiber. For WDM are used weak lasers with 16 or 32 channels. A power of these channels are summed and then we work with the power in fiber about 0.5W which is dangerous for eyes. Therefore for design of the optical network over 10Gbit/s per 1 channel WDM, it is obligation to solve this nonlinear phenomenon. In program package OptSim was created topology 8 and 16- channel DWDM (Dense Wavelenght Division Multiplexing) system according to standard ITU-T (International Telecommunication Union-Telecommunication) G.694.1 with channel spacing of 25GHz, transmission power of 1 and 15 dBm, with transmision speed of 10Gbit/s and two coding types to see the SPM