High-speed coherent photonic random-access memory in long-lasting sound waves

Steven Becker; Andreas Geilen; Birgit Stiller

doi:10.1117/12.3021412

20 June 2024 High-speed coherent photonic random-access memory in long-lasting sound waves

Steven Becker, Andreas Geilen, Birgit Stiller

Proceedings Volume PC13004, Nonlinear Optics and its Applications 2024; PC1300409 (2024) https://doi.org/10.1117/12.3021412
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Abstract

We experimentally show an optoacoustic memory based on Brillouin scattering with one order of magnitude higher storage time that retrieves amplitude and phase information after 120ns. We increase the intrinsic phonon lifetime of a highly nonlinear fiber by a factor of six by cooling the fiber down to 4.2K. We demonstrate the performance enhancement of optoacoustic memory by measuring the amplitude and phase information of an initial data pulse and its corresponding retrieved readout pulse using direct and double homodyne detection. Furthermore, we present the influence of different cryogenic temperatures between 4.2K and 20K on the optoacoustic memory and compare the results with continuous-wave measurements. In conclusion, our work can not only accelerate photonic computing but also advance other applications of stimulated Brillouin scattering that require long phonon lifetimes, such as optoacoustic filters in microwave photonics. In addition, the presented long-lasting sound wave optoacoustic memory is compatible with active acoustic refreshment technique potentially leading to all-optical coherent memory beyond 1 μs.

Conference Presentation

Citation Download Citation

Steven Becker, Andreas Geilen, and Birgit Stiller "High-speed coherent photonic random-access memory in long-lasting sound waves", Proc. SPIE PC13004, Nonlinear Optics and its Applications 2024, PC1300409 (20 June 2024); https://doi.org/10.1117/12.3021412

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