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Journal of Emerging Trends in Computing and Information Sciences >> Call for Papers Vol. 8 No. 3, March 2017

Journal of Emerging Trends in Computing and Information Sciences

Investigation of wavelength Conversion Based on FWM in Silicon Nanowire Waveguides Part I: Numerical Modeling and Results

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Author R. S. Fyath, Mina T. Ahmed
ISSN 2079-8407
On Pages 108-133
Volume No. 4
Issue No. 1
Issue Date February 01, 2013
Publishing Date February 01, 2013
Keywords FWM, Silicon nanowire, Wavelength conversion.


Abstract

This paper addresses theoretically wavelength conversion based on four-wave mixing (FWM) in Silicon-on-insulator (SOI) nanowire waveguides. Comprehensive numerical model is developed to investigate the characteristics of FWM in silicon nanowire waveguides. The model is based on a set of coupled nonlinear Schrödinger equations describing the propagation of the pump, signal, and converted waveform through the waveguide. The effect of dispersion, free-carrier absorption, two-photon absorption, and state of polarization are taken into account. Analytical solutions are also deduced from the model under simplified conditions to get approximated description for the key roles played by various system parameters. Both numerical and analytical models are applied to four silicon nanowire waveguides; differ in their cross section dimensions. The results indicate clearly that there is an optimum length for the nanowire waveguide which maximizes the output conversion efficiency. Generally, TM operation yields higher conversion efficiency compared with TE operation due to its higher input coupling efficiency. Back

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