Multi-Level Optical Weights in Integrated Circuits

We demonstrate multi-level optical weights embedded in a silicon photonic platform based on ferroelectric domain switching. Ferroelectric barium titanate integrated on silicon resonator structures is used as the memory material. By applying short voltage pulses of 100ns, we can switch fractions of t...

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Bibliographic Details
Published in2017 IEEE International Conference on Rebooting Computing (ICRC) pp. 1 - 3
Main Authors Abel, Stefan, Stark, David J., Eltes, Felix, Caimi, Daniele, Fompeyrine, Jean, Ortmann, John E.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.11.2017
Subjects
Nonlinear optics
Optical pulses
Optical resonators
Optical switches
Optical waveguides
Photonics
Silicon
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Summary:We demonstrate multi-level optical weights embedded in a silicon photonic platform based on ferroelectric domain switching. Ferroelectric barium titanate integrated on silicon resonator structures is used as the memory material. By applying short voltage pulses of 100ns, we can switch fractions of the ferroelectric domains and thus change the transmission of the waveguides by more than one order of magnitude in a non-volatile way. We achieve 10 distinct transmission levels, and show iterative switching of the synaptic element based on the polarity, magnitude, and number of applied voltage pulses. Our results are the first experimental demonstration of an electrically driven, multi-level optical memory in integrated photonic circuits. Such non-volatile, ferroelectric weighting element could serve as a key synaptic building block in future photonic neuronal networks.
DOI:10.1109/ICRC.2017.8123672