Low-power consumption optical synapse device based on vertical cavity semiconductor optical amplifier

Abstract

The invention discloses a low-power consumption optical synapse device based on a vertical cavity semiconductor optical amplifier. The invention belongs to the technical field of optical information processing, and is mainly applied to the construction of a photon pulse neural network. The device as shown in the figure includes two vertical cavity surface emitting semiconductor lasers VCSEL1 and VCSEL2, a dimmable delay line VODL, two optical couplers OC1 and OC2, a three-port optical circulator Circulator, a vertical cavity semiconductor optical amplifier VCSOA, a Bias and TEC for providing bias current and temperature control for the vertical cavity semiconductor optical amplifier, and two band pass filters lambda1 and lambda2. Light pulses output by the VCSELs are injected into the VCSOA, which proves that the VCSOA has the function of realizing optical synapses. The device of the invention has low power consumption while ensuring the realization of the optical synapse function, theinput power requirement on input signals is low, and the tuning range of a time window is large.

Description

technical field [0001] A low-power optical synapse device based on a vertical cavity semiconductor optical amplifier belongs to the technical field of optical information processing, and in particular relates to a method for realizing low-power optical synapse. Background technique [0002] Compared with the traditional von Neumann system, photonic neuromorphic computing combines the characteristics of photonics and brain-like computing, and has great advantages in terms of power consumption and memory. The photon neural network mainly includes two functional modules: photon pulse neuron and photon synapse. Low power consumption is one of the key requirements for photonic neural network devices. Spike time-dependent plasticity is found to be the main synaptic weight update rule and is highly relevant to learning and memory in the brain. [0003] As far as the current research progress is concerned, the pulse-time-dependent plasticity of the optical domain is mainly achieve...

AI Technical Summary

Problems solved by technology

Under normal circumstances, the operating current of semiconductor optical amplifiers is relatively large, ranging from tens to hundreds of milliamps, which cannot meet the low power consumption requirements of photonic neural networks.

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