Diffractive Deep-Neural-Network-Based Classifier for Holographic Memory
Holographic memory offers high-capacity optical storage with rapid data readout and long-term durability. Recently, read data pages have been classified using digital deep neural networks (DNNs). This approach is highly accurate, but the prediction time hinders the data readout throughput. This stud...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-02-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/11/2/145 |
| _version_ | 1797297227974049792 |
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| author | Toshihiro Sakurai Tomoyoshi Ito Tomoyoshi Shimobaba |
| author_facet | Toshihiro Sakurai Tomoyoshi Ito Tomoyoshi Shimobaba |
| author_sort | Toshihiro Sakurai |
| collection | DOAJ |
| description | Holographic memory offers high-capacity optical storage with rapid data readout and long-term durability. Recently, read data pages have been classified using digital deep neural networks (DNNs). This approach is highly accurate, but the prediction time hinders the data readout throughput. This study presents a diffractive DNN (D2NN)-based classifier for holographic memory. D2NNs have so far attracted a great deal of attention for object identification and image transformation at the speed of light. A D2NN, consisting of trainable diffractive layers and devoid of electronic devices, facilitates high-speed data readout. Furthermore, we numerically investigated the classification performance of a D2NN-based classifier. The classification accuracy of the D2NN was 99.7% on 4-bit symbols, exceeding that of the hard decision method. |
| first_indexed | 2024-03-07T22:17:20Z |
| format | Article |
| id | doaj.art-bff37e8fcb354e8d8fdb419c14015d61 |
| institution | Directory Open Access Journal |
| issn | 2304-6732 |
| language | English |
| last_indexed | 2024-03-07T22:17:20Z |
| publishDate | 2024-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj.art-bff37e8fcb354e8d8fdb419c14015d612024-02-23T15:31:39ZengMDPI AGPhotonics2304-67322024-02-0111214510.3390/photonics11020145Diffractive Deep-Neural-Network-Based Classifier for Holographic MemoryToshihiro Sakurai0Tomoyoshi Ito1Tomoyoshi Shimobaba2Graduate School of Engineering, Chiba University, 1-33, Yayoi-cho, Inage-ku, Chiba-shi 263-8522, Chiba, JapanGraduate School of Engineering, Chiba University, 1-33, Yayoi-cho, Inage-ku, Chiba-shi 263-8522, Chiba, JapanGraduate School of Engineering, Chiba University, 1-33, Yayoi-cho, Inage-ku, Chiba-shi 263-8522, Chiba, JapanHolographic memory offers high-capacity optical storage with rapid data readout and long-term durability. Recently, read data pages have been classified using digital deep neural networks (DNNs). This approach is highly accurate, but the prediction time hinders the data readout throughput. This study presents a diffractive DNN (D2NN)-based classifier for holographic memory. D2NNs have so far attracted a great deal of attention for object identification and image transformation at the speed of light. A D2NN, consisting of trainable diffractive layers and devoid of electronic devices, facilitates high-speed data readout. Furthermore, we numerically investigated the classification performance of a D2NN-based classifier. The classification accuracy of the D2NN was 99.7% on 4-bit symbols, exceeding that of the hard decision method.https://www.mdpi.com/2304-6732/11/2/145holographic memoryholographic data storageneural networkdiffractive neural network |
| spellingShingle | Toshihiro Sakurai Tomoyoshi Ito Tomoyoshi Shimobaba Diffractive Deep-Neural-Network-Based Classifier for Holographic Memory Photonics holographic memory holographic data storage neural network diffractive neural network |
| title | Diffractive Deep-Neural-Network-Based Classifier for Holographic Memory |
| title_full | Diffractive Deep-Neural-Network-Based Classifier for Holographic Memory |
| title_fullStr | Diffractive Deep-Neural-Network-Based Classifier for Holographic Memory |
| title_full_unstemmed | Diffractive Deep-Neural-Network-Based Classifier for Holographic Memory |
| title_short | Diffractive Deep-Neural-Network-Based Classifier for Holographic Memory |
| title_sort | diffractive deep neural network based classifier for holographic memory |
| topic | holographic memory holographic data storage neural network diffractive neural network |
| url | https://www.mdpi.com/2304-6732/11/2/145 |
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