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  • 2013 Conference on Lasers and Electro-Optics - International Quantum Electronics Conference
  • (Optica Publishing Group, 2013),
  • paper CD_P_14

Soliton-Like Propagation in Dispersion-Managed Silicon Nanowaveguides

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Abstract

Over the last few years, significant research effort has been devoted to the study of nonlinear phenomena in silicon nanowaveguides (SNWs) [1]. In particular, the capability for extensively engineering the dispersion characteristics of SNWs [1], has directed considerable interest to the dynamics of femtosecond solitonic pulses [2]. However, the formation of pure solitons in SNWs is hindered (besides linear propagation losses) by the presence of nonlinear losses, namely, two-photon (TPA) and free-carrier absorption (FCA). Despite these extra loss mechanisms, we demonstrate in this work the possibility for quasi-soliton propagation in dispersion-managed SNWs. Both single-pulse and, more importantly, pulse-train cases are thoroughly examined, by employing a vectorial nonlinear Schrödinger equation (NLSE) formulation [4], rigorously taking into account all relevant phenomena, including free-carrier and higher-order nonlinear effects such as self-steepening.

© 2013 IEEE

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