Universal Journal of Electrical and Electronic Engineering Vol. 6(5A), pp. 125 - 138
DOI: 10.13189/ujeee.2019.061515
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Supercontinuum Generation in Highly Nonlinear PQF with Two Zero Dispersion Wavelength


Sivacoumar Rajalingam *, Zachariah C. Alex
School of Electronics Engineering, Vellore Institute of Technology (VIT), India

ABSTRACT

An optical input pulse with a duration of nanosecond to femtosecond propagates through a dispersive nonlinear medium, it is subject to an extreme spectral broadening termed as white light supercontinuum (SC). In PCF, dispersion characteristics can be modified by the waveguide geometric parameters and thereby the nonlinear dynamics can be altered. In this article, the fiber parameters like core diameter, doping percentage, and pitch are varied and analyzed to achieve a conclusive zero-dispersion wavelength (ZDW) and a high nonlinearity. The numerical study presents different designs of solid-core photonic quasi-crystal fiber (PQF) and selection of highly nonlinear fiber with an effective area of 1.14 mm2 and nonlinearity of 196 W-1-km-1 at 780 nm exhibiting two-zero dispersion wavelength for supercontinuum generation in different regimes. The results exhibit a significant pulse broadening effect when the pump pulse (FWHM) was varied from 25 fs to 100 fs. Similarly, the influences of the pulse energy and peak average power on the bandwidth of the generated SC are studied

KEYWORDS
Supercontinuum Generation, Photonic Quasi-crystal Fibers, Zero-dispersion Wavelength, Nonlinearity, Soliton Fission

Cite this paper
Sivacoumar Rajalingam , Zachariah C. Alex . "Supercontinuum Generation in Highly Nonlinear PQF with Two Zero Dispersion Wavelength." Universal Journal of Electrical and Electronic Engineering 6.5A (2019) 125 - 138. doi: 10.13189/ujeee.2019.061515.