Deterministic single soliton generation and compression in microring resonators avoiding the chaotic region

TL;DR

This paper demonstrates a method to reliably generate and compress single cavity solitons in SiN microring resonators by navigating a specific parameter path that avoids chaotic regions, enabling stable Kerr frequency combs.

Contribution

It introduces a novel parameter path in detuning and pump power space to achieve deterministic single soliton generation and compression, avoiding chaotic regimes.

Findings

Successful identification of stable regions via numerical simulations.

Defined a parameter path from SMI to SCS avoiding chaos.

Achieved stable single soliton generation and compression.

Abstract

A path within the parameter space of detuning and pump power is demonstrated in order to obtain a single cavity soliton (CS) with certainty in SiN microring resonators in the anomalous dispersion regime. Once the single CS state is reached, it is possible to continue a path to compress it, broadening the corresponding single free spectral range (FSR) Kerr frequency comb. The first step to achieve this goal is to identify the stable regions in the parameter space via numerical simulations of the Lugiato-Lefever equation (LLE). Later, using this identification, we define a path from the stable modulation instability (SMI) region to the stable cavity solitons (SCS) region avoiding the chaotic and unstable regions.