Add-drop system for Kerr bistable memory in silicon nitride microrings

TL;DR

This paper investigates Kerr bistable memory in silicon nitride microring cavities, highlighting that an add-drop system is essential for stable operation and identifying optimal coupling conditions to mitigate thermo-optic effects.

Contribution

It demonstrates that an add-drop configuration is necessary for Kerr bistable memory in silicon nitride microrings and defines coupling parameters to prevent thermo-optic interference.

Findings

Add-drop system enables Kerr bistable memory operation.

Optimal coupling range avoids thermo-optic effects.

Comparison shows add-drop system outperforms side-coupled system.

Abstract

We numerically studied the required conditions for achieving a memory operation based on Kerr bistability in the presence of the thermo-optic effect in silicon nitride microring cavity systems. By comparing a side-coupled system and an add-drop system, we found that the latter is needed to realize obtain Kerr bistable operation. In addition, we show the coupling coefficient range in which the memory operation does not suffer from the thermo-optic effect.