Polarization-resolved and polarization- multiplexed spike encoding properties in photonic neuron based on VCSEL-SA.
Polarization-resolved and polarization- multiplexed spike encoding properties in photonic neuron based on VCSEL-SA.
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基于 VCSEL-SA 的光子神经元的偏振分辨和偏振复用尖峰编码特性
DOI：
10.1038/s41598-018-34537-x
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发表时间：
2018-10-31
影响因子：
4.6
通讯作者：
Hao Y
中科院分区：
文献类型：
--
作者：
Zhang Y;Xiang S;Guo X;Wen A;Hao Y
基于自旋翻转模型和Yamada模型，数值研究了嵌入可饱和吸收体的垂直腔面发射激光器(VCSEL-SA)中两个偏振分辨模的尖峰编码特性。结果表明，外部输入光脉冲(EIOP)可以在X偏振(XP)模式、Y偏振(Yp)模式或同时在XP和Yp模式下被编码成尖峰。此外，数值分岔图表明，较低(较高)的EIOP强度有利于产生强直(相)尖峰；在XP(Yp)模式下，小幅度各向异性有助于宽(窄)强尖峰范围；大电流导致XP和Yp模式的EIOP强度阈值较低。然而，尖峰编码特性几乎不受相位各向异性的影响。结果表明，随着EIOP强度的增加，编码率得到提高。此外，还可以在单个VCSEL-SA中实现双通道偏振复用尖峰编码。就我们所知，这种单通道偏振分辨和双通道偏振多路复用尖峰编码方案尚未被报道。因此，这项工作对于超快光子神经形态系统和脑启发的信息处理具有重要的价值。
The spike encoding properties of two polarization-resolved modes in vertical-cavity surface-emitting laser with an embedded saturable absorber (VCSEL-SA) are investigated numerically, based on the spin-flip model combined with the Yamada model. The results show that the external input optical pulse (EIOP) can be encoded into spikes in X-polarization (XP) mode, Y-polarization (YP) mode, or both XP and YP modes. Furthermore, the numerical bifurcation diagrams show that a lower (higher) strength of EIOP is beneficial for generating tonic (phasic) spikes; a small amplitude anisotropy contributes to wide (narrow) tonic spiking range in XP (YP) mode; a large current leads to low thresholds of EIOP strength for both XP and YP modes. However, the spike encoding properties are hardly affected by the phase anisotropy. The encoding rate is shown to be improved by increasing EIOP strength. Moreover, dual-channel polarization-multiplexed spike encoding can also be achieved in a single VCSEL-SA. To the best of our knowledge, such single channel polarization-resolved and dual-channel polarization-multiplexed spike encoding schemes have not yet been reported. Hence, this work is valuable for ultrafast photonic neuromorphic systems and brain-inspired information processing.
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影响因子：
2.9
作者：
SANMIGUEL, M;FENG, Q;MOLONEY, JV
通讯作者：
MOLONEY, JV
影响因子：
2.9
作者：
Li, Nianqiang;Susanto, H.;Adams, M. J.
通讯作者：
Adams, M. J.
影响因子：
3.8
作者：
Ma, Philip Y.;Shastri, Bhavin J.;Prucnal, Paul R.
通讯作者：
Prucnal, Paul R.
影响因子：
2.5
作者：
Sakaguchi, Jun;Katayama, Takeo;Kawaguchi, Hitoshi
通讯作者：
Kawaguchi, Hitoshi
DOI：
10.1109/jstqe.2015.2413955
发表时间：
2015-11-01
影响因子：
4.9
作者：
Salvide, Matias F.;Susana Torre, Maria;Hurtado, Antonio
通讯作者：
Hurtado, Antonio