Numerical study of solitonic pulse generation in the self-injection locking regime at normal and anomalous group velocity dispersion

TL;DR

This paper presents a numerical model for frequency comb generation via self-injection locking, analyzing soliton and platicon formation at different dispersion regimes, and identifies conditions for stable comb generation.

Contribution

It introduces a novel numerical model for self-injection locking-induced combs and demonstrates soliton and platicon generation at both normal and anomalous dispersion regimes.

Findings

Self-injection locking can generate frequency combs at normal dispersion.

Different regimes of soliton excitation depend on phase, backscattering, and pump power.

Parameter ranges for platicon excitation were identified.

Abstract

We developed an original model describing the process of the frequency comb generation in the self-injection locking regime and performed numerical simulation of this process.Generation of the dissipative Kerr solitons in the self-injection locking regime at anomalous group velocity dispersion was studied numerically. Different regimes of the soliton excitation depending on the locking phase, backscattering parameter and pump power were identified. It was also proposed and confirmed numerically that self-injection locking may provide an easy way for the generation of the frequency combs at normal group velocity dispersion. Generation of platicons was demonstrated and studied in detail. The parameter range providing platicon excitation was found.