Simultaneous Generation of Ultrafast Bright and Dark Pulse Employing Nonlinear Processes based on the Silicon Waveguides

Abstract

In this paper we have proposed and demonstrated that the ultrafast bright and dark pulse can be generated simultaneously by utilizing mainly the nonlinear process such as stimulated Raman scattering (SRS), and so on, based on the silicon-on-insulator (SOI) optical waveguides. Results show that when an introduced ultrafast dark pulse is co-propagating with other two continue waves (CW) along the SOI, the ultrafast bright and dark pulse can be achieved at the end of waveguide at different wavelengths, respectively, if the frequency detuning of ∼15.6 THz between controlling pulse and CW is matched. The performance of pulse generation is strongly dependent on the waveguide length and initial conditions including the powers of the controlling pulse, and CW, and the time width of controlling pulse, respectively.