Ingo Fischer

All-optical neuromorphic computing in optical networks of semiconductor lasers

2016

Networks of interconnected nodes are at the heart of every neural network concept. While neural networks have been implemented in various hardware systems, the efficient realization of such networks still represents a major challenge. We …

Implementing a deep neural network using a single nonlinear element and delayed feedback

2023

Optically implemented neural networks promise faster speeds and lower costs. However, large size networks remain challenging. We derive how to emulate a deep neural network with just a single nonlinear element using delayed feedback signals.

Experimental reservoir computing with diffractively coupled VCSELs

2024 · Optics Letters

We present experiments on reservoir computing (RC) using a network of vertical-cavity surface-emitting lasers (VCSELs) that we diffractively couple via an external cavity. Our optical reservoir computer consists of 24 physical VCSEL nodes. We evaluate …