Selective engineering of cavity resonance for frequency matching in optical parametric processes

TL;DR

This paper introduces a method called selective mode splitting (SMS) to precisely shift a specific cavity resonance in high-Q microresonators, enabling efficient frequency matching for optical parametric processes like four-wave mixing.

Contribution

The paper presents a novel SMS technique that selectively shifts a single cavity resonance without affecting others, improving frequency matching in integrated nonlinear photonics.

Findings

Successfully demonstrated SMS in silicon microresonators

Achieved efficient four-wave mixing through resonance tuning

Potential for broad applications in integrated photonics

Abstract

We propose to selectively engineer a single cavity resonance to achieve frequency matching for optical parametric processes in high-Q microresonators. For this purpose, we demonstrate an approach, selective mode splitting (SMS), to precisely shift a targeted cavity resonance, while leaving other cavity modes intact. We apply SMS to achieve efficient parametric generation via four-wave mixing in high-Q silicon microresonators. The proposed approach is of great potential for broad applications in integrated nonlinear photonics.