Getachew, Belay (2009) An investigation of Attenuation and Dispersion in Propagation Mode Characteristics of Optical Fiber Material Leading to non-Linearity. Masters thesis, Addis Ababa University.
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Abstract
Study of non-linearity in optical fiber material has attracted tremendous attention over last two decades. Despite of many experimental and theoretical efforts to find the origin of nonlinearity and to quantify the loss due to non-linearity still a debatable issue. The aim of this research work is to find a mechanism and to quantify to non-linearity that causes attenuation and dispersion in optical fiber. We specifically calculated solution to non-linear envelope equation (non-linear Schrödinger equation) from Maxwell theory choosing appropriate envelope function. Our calculations are in agreement with other observation as far as loss and non-linearity concerned. We found the soliton solution that is a very interesting result that can be further looked at in detail to observe the non-linear effect in fiber material. It is found that the non-linearity balances dispersion and a stable pulse is formed which does not alter its shape during propagation. This simple calculation is to understand the mechanism of the origin of non-linearity how to further control it by tuning some of the fiber material.
| Item Type: | Thesis (Masters) |
|---|---|
| Subjects: | Q Science > Q Science (General) Q Science > QC Physics |
| Divisions: | Africana |
| Depositing User: | Selom Ghislain |
| Date Deposited: | 12 Sep 2018 08:24 |
| Last Modified: | 12 Sep 2018 08:24 |
| URI: | http://thesisbank.jhia.ac.ke/id/eprint/5188 |
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