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Characteristics of multi-channel reservoir computing based on mutually-coupled spin-VCSELs: a comprehensive investigation.

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Title: Characteristics of multi-channel reservoir computing based on mutually-coupled spin-VCSELs: a comprehensive investigation.
Authors: Jiang, Li1 (AUTHOR), Deng, Sha-Sha1 (AUTHOR), Song, Wei-Jie1 (AUTHOR), Zou, Mei-Ling1 (AUTHOR), Jia, Xin-Hong1 (AUTHOR) jiaxh_0@sicnu.edu.cn, Tang, Yu-Quan1 (AUTHOR), Bao, Ming-Yu1 (AUTHOR), Lv, Jiang-Tao1 (AUTHOR)
Source: Applied Physics B: Lasers & Optics. May2024, Vol. 130 Issue 5, p1-13. 13p.
Subjects: Surface emitting lasers, Optical pumping, Bifurcation diagrams, Parallel processing, System dynamics, Pumping machinery
Abstract: We studied the characteristics of a four-channel multi-task reservoir computing (RC) system based on mutually-coupled and optically pumped spin vertical-cavity surface-emitting lasers (Spin-VCSELs). By analyzing bifurcation and state diagrams, we investigated the polarization dynamics of the system. Additionally, we examined the effects of key parameters such as coupling strength, injection strength, frequency detuning, optical pumping intensity, and pump polarization ellipticity on RC performance, with one-step time-series prediction as the benchmark. Our findings indicate that an increase in coupling strength results in a reduced frequency detuning range, accompanied by a lower normalized mean squared error (NMSE). Excessive coupling strength and optical pumping intensity are detrimental to RC performance. The influence of pump polarization ellipticity is smaller and exhibits a symmetry feature. Furthermore, the parameter optimization regime for orthogonal polarized optical coupling (OPOC) is wider than that for parallel polarized optical coupling (PPOC). Under optimized parameters, both PPOC and OPOC-based RC system can achieve NMSE as low as 0.033 and 0.041 respectively. This work can provide a valuable insight on the design and mechanism analysis for parallel and multi-task processing RC systems based on the platform of Spin-VCSELs. [ABSTRACT FROM AUTHOR]
Copyright of Applied Physics B: Lasers & Optics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Characteristics of multi-channel reservoir computing based on mutually-coupled spin-VCSELs: a comprehensive investigation.
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  Data: <searchLink fieldCode="AR" term="%22Jiang%2C+Li%22">Jiang, Li</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Deng%2C+Sha-Sha%22">Deng, Sha-Sha</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Song%2C+Wei-Jie%22">Song, Wei-Jie</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zou%2C+Mei-Ling%22">Zou, Mei-Ling</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Jia%2C+Xin-Hong%22">Jia, Xin-Hong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> jiaxh_0@sicnu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Tang%2C+Yu-Quan%22">Tang, Yu-Quan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Bao%2C+Ming-Yu%22">Bao, Ming-Yu</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lv%2C+Jiang-Tao%22">Lv, Jiang-Tao</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Applied+Physics+B%3A+Lasers+%26+Optics%22">Applied Physics B: Lasers & Optics</searchLink>. May2024, Vol. 130 Issue 5, p1-13. 13p.
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  Data: <searchLink fieldCode="DE" term="%22Surface+emitting+lasers%22">Surface emitting lasers</searchLink><br /><searchLink fieldCode="DE" term="%22Optical+pumping%22">Optical pumping</searchLink><br /><searchLink fieldCode="DE" term="%22Bifurcation+diagrams%22">Bifurcation diagrams</searchLink><br /><searchLink fieldCode="DE" term="%22Parallel+processing%22">Parallel processing</searchLink><br /><searchLink fieldCode="DE" term="%22System+dynamics%22">System dynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Pumping+machinery%22">Pumping machinery</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: We studied the characteristics of a four-channel multi-task reservoir computing (RC) system based on mutually-coupled and optically pumped spin vertical-cavity surface-emitting lasers (Spin-VCSELs). By analyzing bifurcation and state diagrams, we investigated the polarization dynamics of the system. Additionally, we examined the effects of key parameters such as coupling strength, injection strength, frequency detuning, optical pumping intensity, and pump polarization ellipticity on RC performance, with one-step time-series prediction as the benchmark. Our findings indicate that an increase in coupling strength results in a reduced frequency detuning range, accompanied by a lower normalized mean squared error (NMSE). Excessive coupling strength and optical pumping intensity are detrimental to RC performance. The influence of pump polarization ellipticity is smaller and exhibits a symmetry feature. Furthermore, the parameter optimization regime for orthogonal polarized optical coupling (OPOC) is wider than that for parallel polarized optical coupling (PPOC). Under optimized parameters, both PPOC and OPOC-based RC system can achieve NMSE as low as 0.033 and 0.041 respectively. This work can provide a valuable insight on the design and mechanism analysis for parallel and multi-task processing RC systems based on the platform of Spin-VCSELs. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Applied Physics B: Lasers & Optics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s00340-024-08217-w
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        Text: English
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      – SubjectFull: Surface emitting lasers
        Type: general
      – SubjectFull: Optical pumping
        Type: general
      – SubjectFull: Bifurcation diagrams
        Type: general
      – SubjectFull: Parallel processing
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      – SubjectFull: System dynamics
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      – SubjectFull: Pumping machinery
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    Titles:
      – TitleFull: Characteristics of multi-channel reservoir computing based on mutually-coupled spin-VCSELs: a comprehensive investigation.
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            NameFull: Jiang, Li
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            NameFull: Deng, Sha-Sha
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            – D: 01
              M: 05
              Text: May2024
              Type: published
              Y: 2024
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