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Authors: T. Van Vaerenbergh, M. Fiers, P. Mechet, T. Spuesens, R. Kumar, G. Morthier, K.T Vandoorne, B. Schneider, B. Schrauwen, J. Dambre, P. Bienstman
Title: Characterization of cascadable excitability in a silicon-on-insulator microring
Format: International Conference Proceedings
Publication date: 11/2012
Journal/Conference/Book: Proceedings of the 2012 Annual Symposium of the IEEE Photonics Society Belenux Chapter
Volume(Issue): p.119-122
Location: Mons, Belgium
Citations: Look up on Google Scholar
Download: Download this Publication (471KB) (471KB)


High-Q-factor Silicon-On-Insulator microrings both self-pulsate and are excitable. In this paper, we experimentally demonstrate that this excitability is cascadable. Moreover;we show how, using a Coupled Mode Theory description of the ring, an adiabatic elimination of the fast field variable allows to calculate both the self-pulsation and the excitability
onsets. The excitability region of a micro ring is merely centered at the blue-side of the
ring's resonance, as the self-pulsation onset there is a subcritical Andronov-Hopfbifurcation.
A proper characterization of this excitability will help to understand how microrings could be used as a basic component in photonic spiking neural networks.

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