All-optical synaptic devices utilizing 2D polymer film for logic operations and integrated edge computing

This is the authors' abstract. We don't add key points for this paper.

Bioinspired photonic synapses with tunable plasticity are pivotal for next-generation neuromorphic systems. While inorganic oxides, perovskites, and two-dimensional (2D) materials dominate optical synapse research, 2D polymer-based counterparts remain underexplored. This study presents an all-optical synapse constructed from a large-area 2D polymer film, with all synaptic behaviors functioning in the ultraviolet (UV) and blue light regimes. Key synaptic functions, such as paired-pulse facilitation/depression (PPF/PPD) and long-term potentiation/depression, are successfully simulated in this optical synapse. Furthermore, the all-optical synapse effectively performs "AND" and "OR" logic gate operations and is successfully integrated into a novel edge computing system for anomaly detection in indium tin oxide (ITO) glass. This system accurately classifies various types of damage, achieving a recognition accuracy of 98.03% across 32 conductance states during convolution operations. These findings highlight the potential of 2D polymer film-based all-optical synapses for enabling advanced logic operations and integrated edge computing applications.