Measurement of Material Dispersion for 850nm wavelength using FiberSim Simulator

Abstract

Dispersion in the optical fibre is critical issue in case of optical fibre communication. Dispersion is broadening of the pulse which affect the inter symbol interference of the pulse. This ISI effect limits the length of fibre, data rate of transmission and strength of the signal in optical fibre. Basically there are three types of dispersions material dispersion, waveguide dispersion and polarisation mode dispersion. Dispersion depends on types of optical source, spectral width of the optical source and type of fibre. Study of measurement and compensation of dispersion is very necessary to improve the quality of optical communication. In this paper study of dispersion is completed. We have been measured material dispersion for 850nm wavelength signal of Light Emitting Diode (LED) source. We have taken 20nm width of the pulse and measured dispersion at different distances. Results show that the data rate and broadening of the pulse at various length of optical fibre.