垂直腔面发射激光器
计算机科学
光子学
神经形态工程学
极化(电化学)
光电子学
异或门
光放大器
异或
光开关
激光器
光学
电子工程
材料科学
物理
人工神经网络
逻辑门
算法
人工智能
工程类
化学
物理化学
作者
Yuhang Feng,Pei Zhou,Nianqiang Li
摘要
We propose an approach for implementing spike-based all-optical fast neuromorphic exclusive OR (XOR) operation using a single vertical-cavity surface-emitting laser (VCSEL). Based on the polarization mode competition in the VCSEL under the influence of dual-polarization optical injections, the XOR operation is realized. Here, the inputs for the logic operations are concurrently injected into the orthogonal polarization modes of the VCSEL-neuron in the form of a square wave, achieving high stability and accuracy. The spike-based XOR operation approaches a 0.8 gigahertz (GHz) rate within only one photonic neuron, which is 3.2 times faster than that of the vertical-cavity semiconductor optical amplifier (VCSOA)- neuron. Furthermore, the feasibility of employing the XOR operations in both discrete and continuous tasks has been verified. Our approach aligns more congruently with the processing method of biological neurons for XOR operation tasks, thereby demonstrating great potential for future photonic neural computing.
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