An Investigation Of Attenuation And Dispersion In Optical Fiber

Study of non-linearity in optical ber material has attracted tremendous attentionrnover last two decades. Despite many experimental and theoretical e orts to ndrnthe origin of non-linearity and to quantify the loss due to non-linearity still a debablernissue. The aim of this project work is to nd a mechanism and to quantifyrnnon-linearity that causes attenuation and dispersion in optical ber. We speci -rncally calculated solution to non-linear envelope equation (non-linear Schr odingerrnequation ) from Maxwell is theory choosing appropriate envelope function. Ourrncalculation are in agreement with other researchers as far as loss and non-linearityrnare con cerned. We found the Soliton solution which is very interesting result thatrncan be further looked at in detail to observe the non-linear e ect in ber material.rnIt is found that the non linearity balances dispersion and a stable pulse is formedrnwhich does not alter its shape during propagation. This simple calculation givesrnunderstanding for the mechanism of the origin of non-linearity. Moreover, it helpsrnto control non-linearity by tuning some of the componsion of ber material

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