Optical computing device and computing method

Abstract

In an optical computing device and a computing method, a first layer waveguide array may receive a first set of optical signals. The second-layer waveguide array and the first-layer waveguide array are located on different planes, the second-layer waveguide array receives a first group of optical signals from the first-layer waveguide array based on a waveguide coupling principle, and the modulator array can modulate the first group of optical signals transmitted by the second-layer waveguide array based on a second group of data and output a plurality of second optical signals. The modulatorarray modulates the first set of optical signals based on a second set of data, and then the beam combining waveguide array converges the plurality of second optical signals. Compared with a light splitting mode adopting a light splitter, based on a waveguide coupling principle between waveguides, the second-layer waveguide array can receive the first group of optical signals from the first-layerwaveguide array in a lossless manner, excessive noise cannot be introduced into the first group of optical signals, and the accuracy of multiply-accumulate calculation realized by utilizing the optical signals is improved.

Description

technical field [0001] The present application relates to the field of communication technologies, and in particular, to an optical computing device and a computing method. Background technique [0002] With the rapid development of artificial intelligence (AI) and the surge of data volume, various deep learning algorithms have been widely used in image processing, speech recognition, radar signal processing, coherent optical communication and other fields. Multiplication and accumulation calculation is the basic operation of various deep learning algorithms. At present, optical signals can be used to realize multiply-accumulate operation to obtain calculation results. This method of multiply-accumulate calculation through optical principles has the advantages of ultra-wide computing bandwidth and low energy consumption, and speeds up the calculation rate of multiply-accumulate calculation to a certain extent. [0003] Among the many optical computing devices that use optic...

AI Technical Summary

Problems solved by technology

[0005] In the crossbar optical multiply-add device, the horizontally arranged waveguides and the longitudinally arranged waveguides are intersected, and there is crosstalk between the signals between the waveguides. It is easy to introduce noise into the optical signal after splitting, which affects the accuracy of the multiplication and addition operation.

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