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Real-time optical spike-timing dependent plasticity in a single VCSEL with dual-polarized pulsed optical injection

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Abstract

We propose and numerically realize an optical spike-timing dependent plasticity (STDP) scheme by using a single vertical-cavity surface-emitting laser (VCSEL). In the scheme, the VCSEL is subjected to an orthogonally-polarized continuous-wave optical injection (OPCWOI) and dual-polarized pulsed optical injections (DPPOI). Based on the widely used spin-flip model, the response spiking dynamics of VCSEL is numerically studied, and then the optical STDP in a single VCSEL is explored. The roles of bias current, the strength of OPCWOI and DPPOI, and the frequency detuning on the optical STDP curve are numerically analyzed. It is found that, by simultaneously utilizing the response spiking dynamics in two orthogonal polarization modes, an optical STDP could be achieved by using a single VCSEL. Furthermore, the weight update of STDP curve can be calculated in real-time. Additionally, the STDP curves can also be controlled by adjusting some controllable parameters. The real-time optical STDP based on a single VCSEL is numerically realized for the first time, which paves the way towards fully VCSELs-based photonic neuromorphic systems with low power consumption.

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Acknowledgements

This work was supported in part by National Key Research and Development Program of China (Grant No. 2018YFB2200500) and National Natural Science Foundation of China (Grant Nos. 61974177, 61674119).

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Authors and Affiliations

  1. State Key Laboratory of Integrated Service Networks, Xidian University, Xi’an, 710071, China

    Shuiying Xiang, Yanan Han, Xingxing Guo & Aijun Wen

  2. State Key Discipline Laboratory of Wide Bandgap Semiconductor Technology, School of Microelectronics, Xidian University, Xi’an, 710071, China

    Shuiying Xiang, Genquan Han & Yue Hao

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  1. Shuiying Xiang
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  2. Yanan Han
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  3. Xingxing Guo
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Correspondence to Shuiying Xiang.

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Xiang, S., Han, Y., Guo, X. et al. Real-time optical spike-timing dependent plasticity in a single VCSEL with dual-polarized pulsed optical injection. Sci. China Inf. Sci. 63, 160405 (2020). https://doi.org/10.1007/s11432-020-2820-y

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  • DOI: https://doi.org/10.1007/s11432-020-2820-y

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