Processing-Speed Enhancement in a Delay-Laser-Based Reservoir Computer by Optical Injection
A delay-laser-based reservoir computer (RC) usually has its processing speed limited by the transient response of laser dynamics. Here, we study a simple all-optical approach to enhancing the processing speed by introducing optical injection to the reservoir layer of conventional RC that consists of...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-04-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/9/4/240 |
| _version_ | 1797444157789175808 |
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| author | Ziyue Li Song-Sui Li Xihua Zou Wei Pan Lianshan Yan |
| author_facet | Ziyue Li Song-Sui Li Xihua Zou Wei Pan Lianshan Yan |
| author_sort | Ziyue Li |
| collection | DOAJ |
| description | A delay-laser-based reservoir computer (RC) usually has its processing speed limited by the transient response of laser dynamics. Here, we study a simple all-optical approach to enhancing the processing speed by introducing optical injection to the reservoir layer of conventional RC that consists of a semiconductor laser with a delay loop. Using optical injection, the laser’s transient response effectively accelerates due to the speeded carrier-photon resonance. In the chaotic time-series prediction task, the proposed RC achieves good performance in a flexible range of injection detuning frequency under sufficient injection rate. Using proper injection parameters, the prediction error is significantly reduced and stabilized when using high processing speed. For achieving a prediction error below 0.006, the optical injection enhances the processing speed by an order of magnitude of about 5 GSample/s. Moreover, the proposed RC extends the advantage to the handwritten digit recognition task by achieving better word error rate. |
| first_indexed | 2024-03-09T13:07:30Z |
| format | Article |
| id | doaj.art-48a88f267094481d85d01da7522cff0a |
| institution | Directory Open Access Journal |
| issn | 2304-6732 |
| language | English |
| last_indexed | 2024-03-09T13:07:30Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj.art-48a88f267094481d85d01da7522cff0a2023-11-30T21:45:44ZengMDPI AGPhotonics2304-67322022-04-019424010.3390/photonics9040240Processing-Speed Enhancement in a Delay-Laser-Based Reservoir Computer by Optical InjectionZiyue Li0Song-Sui Li1Xihua Zou2Wei Pan3Lianshan Yan4School of Information Science and Technology, Southwest Jiaotong University, Chengdu 610031, ChinaSchool of Information Science and Technology, Southwest Jiaotong University, Chengdu 610031, ChinaSchool of Information Science and Technology, Southwest Jiaotong University, Chengdu 610031, ChinaSchool of Information Science and Technology, Southwest Jiaotong University, Chengdu 610031, ChinaSchool of Information Science and Technology, Southwest Jiaotong University, Chengdu 610031, ChinaA delay-laser-based reservoir computer (RC) usually has its processing speed limited by the transient response of laser dynamics. Here, we study a simple all-optical approach to enhancing the processing speed by introducing optical injection to the reservoir layer of conventional RC that consists of a semiconductor laser with a delay loop. Using optical injection, the laser’s transient response effectively accelerates due to the speeded carrier-photon resonance. In the chaotic time-series prediction task, the proposed RC achieves good performance in a flexible range of injection detuning frequency under sufficient injection rate. Using proper injection parameters, the prediction error is significantly reduced and stabilized when using high processing speed. For achieving a prediction error below 0.006, the optical injection enhances the processing speed by an order of magnitude of about 5 GSample/s. Moreover, the proposed RC extends the advantage to the handwritten digit recognition task by achieving better word error rate.https://www.mdpi.com/2304-6732/9/4/240reservoir computer (RC)semiconductor laseroptical injectionchaotic time-series predictionhandwritten digit recognitionprocessing speed |
| spellingShingle | Ziyue Li Song-Sui Li Xihua Zou Wei Pan Lianshan Yan Processing-Speed Enhancement in a Delay-Laser-Based Reservoir Computer by Optical Injection Photonics reservoir computer (RC) semiconductor laser optical injection chaotic time-series prediction handwritten digit recognition processing speed |
| title | Processing-Speed Enhancement in a Delay-Laser-Based Reservoir Computer by Optical Injection |
| title_full | Processing-Speed Enhancement in a Delay-Laser-Based Reservoir Computer by Optical Injection |
| title_fullStr | Processing-Speed Enhancement in a Delay-Laser-Based Reservoir Computer by Optical Injection |
| title_full_unstemmed | Processing-Speed Enhancement in a Delay-Laser-Based Reservoir Computer by Optical Injection |
| title_short | Processing-Speed Enhancement in a Delay-Laser-Based Reservoir Computer by Optical Injection |
| title_sort | processing speed enhancement in a delay laser based reservoir computer by optical injection |
| topic | reservoir computer (RC) semiconductor laser optical injection chaotic time-series prediction handwritten digit recognition processing speed |
| url | https://www.mdpi.com/2304-6732/9/4/240 |
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