We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Artificial optoelectronic spiking neuron based on a resonant tunnelling diode coupled to a vertical cavity surface emitting laser.
- Authors
Hejda, Matěj; Malysheva, Ekaterina; Owen-Newns, Dafydd; Ali Al-Taai, Qusay Raghib; Zhang, Weikang; Ortega-Piwonka, Ignacio; Javaloyes, Julien; Wasige, Edward; Dolores-Calzadilla, Victor; Figueiredo, José M. L.; Romeira, Bruno; Hurtado, Antonio
- Abstract
Excitable optoelectronic devices represent one of the key building blocks for implementation of artificial spiking neurons in neuromorphic (brain-inspired) photonic systems. This work introduces and experimentally investigates an opto-electro-optical (O/E/O) artificial neuron built with a resonant tunnelling diode (RTD) coupled to a photodetector as a receiver and a vertical cavity surface emitting laser as a transmitter. We demonstrate a well-defined excitability threshold, above which the neuron produces optical spiking responses with characteristic neural-like refractory period. We utilise its fan-in capability to perform in-device coincidence detection (logical AND) and exclusive logical OR (XOR) tasks. These results provide first experimental validation of deterministic triggering and tasks in an RTD-based spiking optoelectronic neuron with both input and output optical (I/O) terminals. Furthermore, we also investigate in simulation the prospects of the proposed system for nanophotonic implementation in a monolithic design combining a nanoscale RTD element and a nanolaser; therefore demonstrating the potential of integrated RTD-based excitable nodes for low footprint, high-speed optoelectronic spiking neurons in future neuromorphic photonic hardware.
- Subjects
SURFACE emitting lasers; RESONANT tunneling; TUNNEL diodes; OPTOELECTRONIC devices; FOOTPRINTS; COINCIDENCE circuits
- Publication
Nanophotonics (21928606), 2023, Vol 12, Issue 5, p857
- ISSN
2192-8606
- Publication type
Article
- DOI
10.1515/nanoph-2022-0362