Photonic neural network convolutional layer chip based on micro-ring resonator

Abstract

The invention discloses a photonic neural network convolutional layer chip based on a micro-ring resonator. The chip is universal to all deep learning technologies including convolutional calculation.According to the chip, vectorized to-be-calculated signals are loaded on different optical wavelengths by means of a wavelength division multiplexing mode. The micro-ring resonator and a balance photoelectric detector form a weight matrix, convolutional calculation of the to-be-calculated signals and the weight matrix can be completed, and a convolutional result is output. By utilizing the tunability of the integrated micro-ring resonator, the convolutional calculation of any numerical value can be realized. In addition, the speed of the convolutional calculation is increased to a constant level (that is, the speed of light) by using light as a numerical calculation medium, and the advantage of a higher energy efficiency ratio is achieved.

Description

technical field [0001] The invention relates to intelligent photon signal processing technology and neural network technology, in particular to a photon neural network convolution layer chip. technical background [0002] In recent years, deep learning technology (Y. LeCun, et al, "Deep learning," Nature, vol.521, pp.436-444, 2015) has attracted widespread attention from academia and industry. Based on large-scale databases and high-speed digital computing capabilities, deep learning can automatically extract the key features of data, so as to realize tasks such as data prediction, reconstruction, and judgment. Several deep learning-based techniques have surpassed human performance in certain tasks and have been widely used as a result. However, an important condition for realizing high-performance deep learning is a digital computing platform with ultra-high speed and ultra-high energy efficiency. Existing digital computing platforms such as central processing units (CPUs...

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Problems solved by technology

However, the disadvantage of this method is also obvious. When the required calculation is more complicated, the chip realized by this method will be very complicated, and the number of cascaded photon shifters will be very large, which will affect the final calculation accuracy.

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