期刊名称：Journal of Emerging Trends in Computing and Information Sciences
电子版ISSN：2079-8407
出版年度：2013
卷号：4
期号：1
页码：108-133
出版社：ARPN Publishers
摘要：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.
