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This nonlinearity is typically observed only at very high light intensities (values of the electric field comparable to inter atomic electric fields, typically 108 V/m) such as those provided by pulsed lasers. Nonlinear optics (NLO) is the branch of optics that describes the behaviour of light in nonlinear media, that is, media in which the dielectric polarization P responds nonlinearly to the electric field E of the light. Specifically the eye opening decreases with increasing transmitted power. The eye diagram highlights the conversion due to the SPM and FWM. Here, we investigate power effects on simulation of optical communication systems with Self Phase Modulation (SPM) and Four Wave Mixing(FWM), by using the parametric run feature in Optisystem. The main motivation of this work was to study theoretical and simulation studies of broad band optical communication systems due to fiber nonlinearities. Therefore, it is crucial to understand fiber nonlinearities and their effects on fiber-optic communication systems. In wavelength-division- multiplexing (WDM) systems, inter-channel interference due to fiber nonlinearities may limit the system performance significantly. When all the input signal frequencies interact due to fiber nonlinearities, the output bit stream may behave in a complicated way giving adverse effects on system performance. But the non-linear effect still accumulate with the increase in optical power levels. We can compensate the linear effect such as dispersion and attenuation by using dispersion compensation methods. These limiting factors can be linear or non-linear. There are some limiting factors related to data rate and capacity in optical fiber communication system. of Electronics and Communication Engineering TKM Institute of Technology, Kerala, India -691505Ībstract Focus on development of broadband optical communication systems is incredible since it offers combination of wide bandwidth and low losses unmatched by any other transmission medium. of Electronics and Communication Engineering TKM Institute of Technology, Kerala, Indiaĭept.
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