Ultra-low power nonlinear optics in a high Q CMOS compatible integrated micro-ring resonator

TL;DR

This paper demonstrates ultra-low power nonlinear optics in a high-Q CMOS-compatible micro-ring resonator, achieving record conversion efficiency and broad phase-matching bandwidth for four-wave mixing.

Contribution

It introduces a high-Q high-index doped silica micro-ring resonator enabling efficient, low-power four-wave mixing with record efficiency and broad phase-matching bandwidth.

Findings

Record high conversion efficiency in four-wave mixing.

Broad phase-matching bandwidth exceeding 160nm.

Efficient operation at low power levels.

Abstract

We demonstrate efficient, low power, continuous-wave four-wave mixing in the C-band, using a high index doped silica glass micro ring resonator having a Q-factor of 1.2 million. A record high conversion efficiency for this kind of device is achieved over a bandwidth of 20nm. We show theoretically that the characteristic low dispersion enables phase-matching over a bandwidth > 160nm.