Open AccessOptimization of frequency combs spectral-flatness using evolutionary algorithm
Author(s) -
Thyago Pinto,
Uiara Celine de Moura,
Francesco Da Ros,
Marko Krstić,
Jasna V. Crnjanski,
Antonio Napoli,
Dejan M. Gvozdić,
Darko Zibar
Publication year - 2021
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.430402
Subject(s) - flatness (cosmology) , harmonics , optics , particle swarm optimization , amplitude , algorithm , physics , laser , differential evolution , computer science , voltage , cosmology , quantum mechanics
We demonstrate the use of meta-heuristics algorithms for flatness optimization of optical frequency combs (OFCs). Without any additional component for flatness compensation, the laser alone is explored when driven by optimized bias current and radio frequency (RF) driving signals composed by multiple harmonics. The bias current amplitude and RF harmonic amplitudes and relative phases are optimized using particle swarm optimization (PSO) and differential evolution (DE) algorithms. The numerical results lead to a 9 lines-GS-laser-based OFC spectrum with 2.9 dB flatness. An online experimental optimization using the DE algorithm results in a 7-line-GS-laser-based OFC with 2 dB flatness.