期刊
ACS PHOTONICS
卷 9, 期 1, 页码 217-223出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsphotonics.1c01410
关键词
vanadium dioxide; phase change material; optical memory; hybrid integration; silicon waveguide
类别
资金
- Max Planck Society
Vanadium dioxide (VO2) is a material with phase transition characteristics that can be used in hybrid photonic integrated devices. By utilizing the phase transition properties of VO2, a compact optical memory element has been integrated into a silicon waveguide. This method allows for low-energy optical data storage in silicon photonic integrated circuits.
Vanadium dioxide (VO2) is an interesting material for hybrid photonic integrated devices due to its insulator-metal phase transition. Utilizing the hysteresis of the phase transition in voltage-biased VO2, we demonstrate a compact hybrid VO2-silicon optical memory element integrated into a silicon waveguide. An optical pulse writes the VO2 memory, leading to an optical attenuation that can be read out by the optical transmission in a silicon waveguide. Our on-chip memory cell can be optically written with energy as low as 23.5 pJ per pulse and with a 10-90% rise time of similar to 100 ns. This approach is promising for optical data storage in silicon photonic integrated circuits.
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