Nianqiang Li

Mapping bifurcation structure and parameter dependence in quantum dot spin-VCSELs

2018 · Optics Express

We consider a modified version of the spin-flip model (SFM) that describes optically pumped quantum dot (QD) spin-polarized vertical-cavity surface-emitting lasers (VCSELs). Maps showing different dynamical regions and those consisting of various key bifurcations are …

Receptive Field-Based All-Optical Spiking Neural Network for Image Processing

2023 · IEEE Journal of Quantum Electronics

We report on a novel structure of a receptive field (RF)-based multi-layer all-optical neural network using a micropillar laser with a saturable absorber (SA) for image processing. From the perspective of biological vision, the realization …

Neuromorphic Network with Photonic Weighting and Photoelectronic Nonlinear Activation Based on SOA and APD

2024 · ACS Photonics

Photonic neuromorphic computing is emerging as a promising approach for low-latency, energy-efficient nonvon Neumann computing systems. Nonlinear activation functions are key components of photonic neural networks. However, the current implementation of nonlinear activation functions faces …