Phase noise mitigation of the microwave-tophotonic conversion process using feedback on the laser current - Archive ouverte HAL
Article Dans Une Revue Journal of the Optical Society of America B Année : 2022

Phase noise mitigation of the microwave-tophotonic conversion process using feedback on the laser current

Résumé

The generation and transfer of ultra-stable microwave signals are of paramount importance in numerous applications spanning from radar systems to communications and metrology. We demonstrate residual phase noise mitigation at 10GHzof a directly modulated laser system through active control of the laser bias current. The latter is tuned to a finely selected point, where the current-to-phase dependence, measured at several microwave power and frequency values, is maximized. A residual phase noise of -113 dBrad2=Hz at 1 Hz offset frequency from a 10 GHz carrier, with a fractional frequency stability of 1.210 -16 at 1 s and below 10 -19 at 10 5 s, is measured. These performances are compliant with the transfer of the most stable microwave signals available to date, obtained with cryogenic sapphire oscillators or combs locked to cavity-stabilized lasers. This approach is of interest for the distribution of ultra-stable microwave signals in a very simple photonic configuration.

Domaines

Autre
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Dates et versions

hal-04224429 , version 1 (02-10-2023)

Identifiants

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Damien Teyssieux, Rodolphe Boudot, Christophe Fluhr, Jacques Millo. Phase noise mitigation of the microwave-tophotonic conversion process using feedback on the laser current. Journal of the Optical Society of America B, 2022, 39 (11), pp.3108 - 3113. ⟨10.1364/JOSAB.475377⟩. ⟨hal-04224429⟩
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