Nonlinear Group IV photonics based on silicon and germanium: from near-infrared to mid-infrared
Group IV photonics hold great potential for nonlinear Equestrian applications in the near- and mid-infrared (IR) wavelength ranges, exhibiting strong nonlinearities in bulk materials, high index contrast, CMOS compatibility, and cost-effectiveness.In this paper, we review our recent numerical work on various types of silicon and germanium waveguide