Influence of high-order dispersions on the propagation of Gaussian pulse and the compensation of dispersion in metamaterial

doi:10.3969/j.issn.1000-5641.2017.04.011

Abstract

Abstract: This paper compares the dispersion in metamaterial and in some conventional media. It is found that each order of the dispersion in metamaterial is larger in three orders of magnitude than that in conventional media, so that high-order dispersions have to be taken into consideration in the signal propagation. We analyze the impact of each order of the dispersion on the propagation of Gaussian light pulse based on the nonlinear Schrödinger equation and the beam propagation method (BPM). We find that third-order dispersion leads to a serious pulse splitting. A case is found in which Gaussian pulse can propagate in metamaterial to 120km without splits and second dispersion can be compensated by adjusting structure of metamaterial. This is significant to optical communications.

Key words: metamaterial, dispersion, nonlinear Schrödinger equation, Gaussian pulse, dispersion compensation

CLC Number:

TN913.7

XU Zheng-guo, XUE Yan-ling. Influence of high-order dispersions on the propagation of Gaussian pulse and the compensation of dispersion in metamaterial[J]. Journal of East China Normal University(Natural Sc, 2017, (4): 126-138.

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