The influence of high-order susceptibilities on the supercontinuum generation process in germanium-on-silicon waveguides has been investigated in detail in the midinfrared. The frequency dispersion of both the three-photon absorption coefficient and the real part of the fifth-order susceptibility has been investigated in order to develop a self-consistent modeling based upon a generalized nonlinear Schrodinger equation. Numerical results demonstrate that germanium-on-silicon waveguides can be used to induce supercontinuum generation over 1.34-mu m-wide bandwidth with 200-fs input pulses pumped at a wavelength of 4 mu m with peak pump powers of 89 W and waveguide lengths of 4.6 mm. The soliton fission process has also been observed as it is the main mechanism behind the supercontinuum generation.
|Titolo:||Modelling of Supercontinuum Generation in the Germanium-on-Silicon Waveguided Platform|
|Data di pubblicazione:||2015|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1109/JLT.2015.2474133|
|Appare nelle tipologie:||1.1 Articolo in rivista|