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Appl Opt. 2011 Aug 1;50(22):4252-6. doi: 10.1364/AO.50.004252.

Quasi-light-storage enhancement by reducing the Brillouin gain bandwidth.

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  • 1Institut für Hochfrequenztechnik, Hochschule für Telekommunikation Leipzig, Leipzig, Germany. stefan.preuszler@hft‐


The quasi-light-storage (QLS) is a method for the variable and almost distortion free storage of optical data which is based on stimulated Brillouin scattering (SBS). The natural gain bandwidth of SBS limits the storage time of this method to up to 100 ns. We overcome this limit by the superposition of the SBS gain bandwidth with two losses. With this narrowed gain bandwidth, we were able to enhance the storage time for the QLS by 40%.

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