Photonic theory design and simulations - 2Virtual room: INO - 2
|Tuesday, May 26|
TD-2-26-1 / Optoelectronic Metasurfaces
* Pierre Berini, University of Ottawa, Canada
Plasmonic metasurfaces offer a new paradigm for the design of optoelectronic devices. We discuss nanoscale device ideas that exploit the optical field enhancement and confinement provided by such metasurfaces to achieve performance benefits.
TD-2-26-2 / Photonic Spiking Neurons with VCSELs for Ultrafast Neuromorphic Photonic Processing Systems
* Antonio Hurtado, University of Strathclyde, United Kingdom
Photonic approaches emulating the powerful computational capabilities of the brain are receiving increasing research interest as these can provide ultrafast operation speeds. In this talk we will review our work on ultrafast artificial photonic neuronal models based upon Semiconductor Lasers, the same devices used to communicate internet data traffic over optical fiber networks. We will show that a rich variety of neuronal computational features, such as spiking activation/inhibition, bursting, etc., can be reproduced optically using Vertical-Cavity Surface Emitting Lasers (VCSELs). Moreover, these optically reproduced neuronal responses are achieved in a fully controllable and reproducible way at sub-nanosecond speeds (up to 9 orders of magnitude faster than the millisecond timescales in cortical neurons). Furthermore, our results are obtained using commercially-available, inexpensive and compact VCSELs operating at the important telecom wavelengths of 1310 and 1550 nm; hence making our approach fully compatible with existing optical communication technologies. Additionally, we will also present our recent results demonstrating the successful communication of spiking signals at sub-nanosecond rates between interconnected VCSEL-based artificial photonic neurons and the use of such systems for information processing functionalities (e.g. pattern recognition, coincidence detection, photonic spiking memory) and to emulate basic neuronal circuits at ultrafast speeds.