Thong, May Han (2015) Fiber optic parametric amplification (FOPA) simulation in a highly nonlinear fiber (HNLF) / Thong May Han. Masters thesis, University of Malaya.
Abstract
Four wave mixing (FWM) is a nonlinear e�ect observable in optical �bers when light of two or more wavelengths are launched into the �ber. Parametric ampli�cation is a consequence of FWM, where depending on the phase di�erence between the waves, power transfer between the interacting waves could take place. We are interested in the generation of this phenomenon in optical �bers to create Fiber Optical Para- metric Ampli�ers (FOPA). In this paper, we simulated the parametric ampli�cation process in a highly nonlinear �ber (HNLF), focusing on the e�ect of di�erent values of the initial linear phase mismatch ��, pump power Pp, and nonlinear coe�cient . It was found that in terms of the initial �� value, a value closer to zero will result in a higher maximum signal and idler power. Also, we observed that a larger pump power and caused parametric ampli�cation to happen within a shorter length of �ber, as well as giving us a bigger maximum gain. These results will be useful in optimizing the ampli�cation process with respect to the �ber length involved.
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