Si-rich silicon-nitride waveguides for optical transmissions and towards wavelength conversion around 2 $\mu$m

TL;DR

This paper demonstrates silicon-rich silicon-nitride waveguides capable of high-speed optical transmission at 2 μm and efficient wavelength conversion, highlighting their potential for integrated photonics applications.

Contribution

The study introduces silicon-rich silicon-nitride waveguides for 2 μm optical transmission and parametric wavelength conversion, showing high efficiency and low power penalty.

Findings

10 Gbit/s transmission over 3.5 cm with negligible power penalty

Parametric conversion efficiency of -18 dB in pulsed pump regime

Effective high-speed transmission at 2 μm

Abstract

We show that subwavelength silicon-rich nitride waveguides efficiently sustain high-speed transmissions at 2 $\mu$m. We report the transmission of a 10 Gbit/s signal over 3.5 cm with negligible power penalty. Parametric conversion in the pulsed pump regime is also demonstrated using the same waveguide structure with an efficiency as high as -18 dB.