Paper 14090-10
Paper 14090-10
Optical neurons based on VCSELs with broken symmetry
12 April 2026 • 17:10 - 17:30 CEST | Leicester/Salon 12 (Niveau/Level 1)
Abstract
We investigated noncircular-aperture VCSELs as potential broadband nonlinear elements for optical neural networks. The devices consist of two connected mesas sharing common electrodes, where optical injection into one mesa can redistribute emission to the other. Measurements of emission characteristics under varying optical injection powers and frequency detunings revealed a stable response over a broad detuning range (20 GHz). This broadband nonlinear behavior highlights the suitability of coupled-mesa VCSELs as nodes in optical neural networks, offering robustness against wavelength variations across VCSEL arrays.
Presenter
Krzysztof Tyszka
Univ. of Warsaw (Poland)
Postdoctoral Researcher at the University of Warsaw, Institute of Experimental Physics.
He obtained a double doctoral degree (D.E. and Ph.D.) in Nanoelectronics in 2015 through a joint program between the University of Shizuoka, Japan, and the Warsaw University of Technology (WUT), Poland. Until 2018, he held a permanent position as an Assistant Professor (scientific and didactic) at WUT, where he served as a co-investigator on several R&D projects focused on interferometry and metrology. Up to 2019, he worked as a design engineer in the automation and robotics industry. Since 2019, he has been a Postdoctoral Researcher at the University of Warsaw, working in the Polariton Lab on experiments related to polariton-based optical neural networks. He currently leads a project on Polariton Spiking Neural Networks and conducts research on VCSEL-based networks and their applications.