Experimental demonstration of photonic spike-timing-dependent plasticity based on a VCSOA

查看全文 作　　者：Ziwei [1]SONG;Shuiying [1,2]XIANG;Xingyu [1]CAO;Shihao [1]ZHAO;Yue [2]HAO

机构地区：[1]State Key Laboratory of Integrated Service Networks,Xidian University,Xi’an 710071,China;[2]State Key Discipline Laboratory of Wide Bandgap Semiconductor Technology,School of Microelectronics,Xidian University,Xi’an 710071,China

出　　处：《Science China(Information Sciences)》索引2022年第65卷第8期,共10页

基　　金：supported in part by National Natural Science Foundation of China (Grant Nos. 61974177, 61674119);National Outstanding Youth Science Fund Project of National Natural Science Foundation of China (Grant No. 62022062);Fundamental Research Funds for the Central Universities (Grant No. JB210114);Fundamental Research Funds for the Central Universities and the Innovation Fund of Xidian University (Grant No. 5001-20109215456);Tektronix Inc. for providing the arbitrary waveform generators (AWG70001A, AWG70002B)。 摘　　要：We experimentally design two photonic spike-timing-dependent plasticity(STDP) schemes based on a single vertical-cavity semiconductor optical amplifier(VCSOA) and demonstrate the photonic implementation of STDP characteristics. In the first scheme, a single-polarized optical pulse train is injected into the VCSOA, in which a pair of optical pulses with a time difference is designed to emulate the pre-synaptic and post-synaptic spikes. In the second scheme, dual-polarized optical pulses emulating the pre-synaptic and post-synaptic spikes are injected into the single VCSOA. Furthermore, the effects of the initial wavelength detuning and the power of the input optical pulse on the STDP curve are analyzed. The proposed photonic STDP schemes based on a single VCSOA need relatively low bias current and power consumption, and thus,are ideal optical synaptic devices forming key components in the construction of the photonic neuromorphic computing system. 关键词：neuromorphic photonics vertical-cavity semiconductor optical amplifier spike-timing-dependent plasticity optical neural systems pulsed optical injection

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Experimental demonstration of photonic spike-timing-dependent plasticity based on a VCSOA

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