Dynamic behavior of frequency combs in frequency-shifting loops

The understanding of frequency-shifting loops’ (FSLs) transient response is fundamental for their implementation in microwave photonic systems. We developed a numerical model, enabling us to describe the specific dynamics of the frequency comb generated in a FSL seeded by a CW laser. The model, base...

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Veröffentlicht in:Journal of the Optical Society of America. B, Optical physics Optical physics, 2020-06, Vol.37 (6), p.1812
Hauptverfasser: Billault, Vincent, Crozatier, Vincent, Baili, Ghaya, Morvan, Loïc, Dolfi, Daniel, Guillet de Chatellus, Hugues
Format: Artikel
Sprache:eng
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Zusammenfassung:The understanding of frequency-shifting loops’ (FSLs) transient response is fundamental for their implementation in microwave photonic systems. We developed a numerical model, enabling us to describe the specific dynamics of the frequency comb generated in a FSL seeded by a CW laser. The model, based on laser rate equations, predicts the temporal evolution of the power of the individual comb lines during on/off cycles of the injection power, for FSLs operating below the lasing threshold. To prove the validity of the model, we performed experimental measurements of the power of the individual comb lines with time. Numerical simulations based on the model, for different gain media and pumping rates, are in excellent agreement with the experimental results. This paper provides guidance for the concrete implementation of FSLs for microwave photonic applications.
ISSN:0740-3224
1520-8540
DOI:10.1364/JOSAB.391074