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Optimization of frequency combs spectral-flatness using evolutionary algorithm
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DOI：10.1364/OE.430402.png)
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Abstract
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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. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
Keywords:
GENERATION
MODULATION
LASERS
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3.3
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6.1W
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14.3W
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