Polarization-resolved and polarization- multiplexed spike encoding properties in photonic neuron based on VCSEL-SA

Abstract 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 optic...

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Autores principales:	Yahui Zhang, Shuiying Xiang, Xingxing Guo, Aijun Wen, Yue Hao
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Spike Encoding Tonic Spiking Vertical-cavity Surface-emitting Lasers (VCSELs) Yamada Model Anisotropy Amplitude Medicine R Science Q
Acceso en línea:	https://doaj.org/article/d8c1aa3de34e4f74ba2799684aee1dbf
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spelling	oai:doaj.org-article:d8c1aa3de34e4f74ba2799684aee1dbf2021-12-02T15:08:25ZPolarization-resolved and polarization- multiplexed spike encoding properties in photonic neuron based on VCSEL-SA10.1038/s41598-018-34537-x2045-2322https://doaj.org/article/d8c1aa3de34e4f74ba2799684aee1dbf2018-10-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-34537-xhttps://doaj.org/toc/2045-2322Abstract 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.Yahui ZhangShuiying XiangXingxing GuoAijun WenYue HaoNature PortfolioarticleSpike EncodingTonic SpikingVertical-cavity Surface-emitting Lasers (VCSELs)Yamada ModelAnisotropy AmplitudeMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-9 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Spike Encoding Tonic Spiking Vertical-cavity Surface-emitting Lasers (VCSELs) Yamada Model Anisotropy Amplitude Medicine R Science Q
spellingShingle	Spike Encoding Tonic Spiking Vertical-cavity Surface-emitting Lasers (VCSELs) Yamada Model Anisotropy Amplitude Medicine R Science Q Yahui Zhang Shuiying Xiang Xingxing Guo Aijun Wen Yue Hao Polarization-resolved and polarization- multiplexed spike encoding properties in photonic neuron based on VCSEL-SA
description	Abstract 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.
format	article
author	Yahui Zhang Shuiying Xiang Xingxing Guo Aijun Wen Yue Hao
author_facet	Yahui Zhang Shuiying Xiang Xingxing Guo Aijun Wen Yue Hao
author_sort	Yahui Zhang
title	Polarization-resolved and polarization- multiplexed spike encoding properties in photonic neuron based on VCSEL-SA
title_short	Polarization-resolved and polarization- multiplexed spike encoding properties in photonic neuron based on VCSEL-SA
title_full	Polarization-resolved and polarization- multiplexed spike encoding properties in photonic neuron based on VCSEL-SA
title_fullStr	Polarization-resolved and polarization- multiplexed spike encoding properties in photonic neuron based on VCSEL-SA
title_full_unstemmed	Polarization-resolved and polarization- multiplexed spike encoding properties in photonic neuron based on VCSEL-SA
title_sort	polarization-resolved and polarization- multiplexed spike encoding properties in photonic neuron based on vcsel-sa
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/d8c1aa3de34e4f74ba2799684aee1dbf
work_keys_str_mv	AT yahuizhang polarizationresolvedandpolarizationmultiplexedspikeencodingpropertiesinphotonicneuronbasedonvcselsa AT shuiyingxiang polarizationresolvedandpolarizationmultiplexedspikeencodingpropertiesinphotonicneuronbasedonvcselsa AT xingxingguo polarizationresolvedandpolarizationmultiplexedspikeencodingpropertiesinphotonicneuronbasedonvcselsa AT aijunwen polarizationresolvedandpolarizationmultiplexedspikeencodingpropertiesinphotonicneuronbasedonvcselsa AT yuehao polarizationresolvedandpolarizationmultiplexedspikeencodingpropertiesinphotonicneuronbasedonvcselsa
_version_	1718388152270323712

Polarization-resolved and polarization- multiplexed spike encoding properties in photonic neuron based on VCSEL-SA

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