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Compact lensless convolution processor for an optoelectronic convolutional neural network
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DOI：10.1088/1361-6463/acd06d.png)
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To our knowledge, optical 4f systems have been widely used as a convolutional layer to perform convolutional computation in free-space optical neural networks (ONNs), which makes ONNs too bulky to be easily applied to miniaturized smart systems. Hence, we propose a compact lensless optoelectronic convolutional neural network (LOE-CNN) architecture in which a single optimized diffractive phase mask acts as an analog convolution processor to perform convolutional operation without a Fourier lens or lenslet array. We demonstrate that this LOE-CNN can be functionally comparable to existing electronic counterparts in classification performance, achieving a classification accuracy of 98.07% and 95% over the Modified National Institute of Standards and Technology dataset in simulation and experiment, respectively, which not only opens new application prospects for free-space ONNs based on a compact single-chip convolution processor, but also facilitates the development of ONN-based smart devices.
Keyword:
optical convolution computation
optoelectronic convolutional neural network
lensless analog convolution processor
diffractive phase mask
期刊
IF:
3.2
论文数:
2.6W
被引数:
4.9W
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