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

Autor:	Shuiying Xiang, Yahui Zhang, Aijun Wen, Yue Hao, Xingxing Guo
Jazyk:	angličtina
Rok vydání:	2018
Předmět:	Yamada Model Science 02 engineering and technology 01 natural sciences Article Vertical-cavity surface-emitting laser law.invention 010309 optics 020210 optoelectronics & photonics law 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Spike Encoding Anisotropy Physics Anisotropy Amplitude Multidisciplinary Vertical-cavity Surface-emitting Lasers (VCSELs) Quantitative Biology::Neurons and Cognition business.industry Tonic Spiking Saturable absorption Laser Polarization (waves) Neuromorphic engineering Optoelectronics Medicine Photonics business Ultrashort pulse
Zdroj:	Scientific Reports, Vol 8, Iss 1, Pp 1-9 (2018) Scientific Reports
ISSN:	2045-2322
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1c75c7a3db1b25bb5f990f33ea8b12a1 https://doaj.org/article/d8c1aa3de34e4f74ba2799684aee1dbf Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
Nepřihlášeným uživatelům se plný text nezobrazuje	K zobrazení výsledku je třeba se přihlásit.