A NEW OPTICAL NEURON DEVICE FOR ALL-OPTICAL NEURAL NETWORKS

被引:6
作者
AKIYAMA, K
TAKIMOTO, A
MIYAUCHI, M
KURATOMI, Y
ASAYAMA, J
OGAWA, H
机构
[1] Central Research Laboratories, Matsushita Electric Industrial Co Ltd, Moriguchi, Osaka, 570, 3-15, Yagumo-nakamachi
来源
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1991年 / 30卷 / 12B期
关键词
OPTICAL NEURON DEVICE; OPTICAL NEURAL NETWORK; OPTICAL COMPUTING; SPATIAL LIGHT MODULATOR; ASSOCIATIVE MEMORY; A-SI-H PHOTORECEPTOR; FERROELECTRIC LIQUID CRYSTAL;
D O I
10.1143/JJAP.30.3887
中图分类号
O59 [应用物理学];
学科分类号
摘要
A new optical neuron device has been developed. The device can perform both summation and thresholding operations in optics, and consists of a PIN a-Si:H photoreceptor, aluminum neuron electrodes and a ferroelectric liquid crystal light modulator. The a-Si:H photoreceptor shows characteristics of an ideal quantum efficiency (eta approximately 1) and a good linearity (gamma approximately 1). The optical neuron device exhibits a response time of approximately 30-mu-s for incident light power of 9-mu-W and a contrast ratio of 300:1. Using this neuron device, a lenslet array and a memory mask, an all-optical neural network has been constructed. The network demonstrates an associative memory function on purely optical parallel processing without any help from electric computation.
引用
收藏
页码:3887 / 3892
页数:6
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