Si and Si-rich silicon-nitride waveguides for optical transmissions and wavelength conversion around 2µm

We show that cm-long silicon or silicon-rich nitride waveguides with subwavelength transverse dimensions can efficiently sustain high-speed transmissions at 2 μm. We report the transmission of a 10 Gbit/s signal with negligible power penalty. Parametric conversion in both continuous and pulsed pump regimes is also demonstrated