Fig. 4 Proposed STDP scheme based on a photonic synapse.

Published byÁron Nagy Modified over 5 years ago

Similar presentations

Presentation on theme: "Fig. 4 Proposed STDP scheme based on a photonic synapse."— Presentation transcript:

1 Fig. 4 Proposed STDP scheme based on a photonic synapse.
Proposed STDP scheme based on a photonic synapse. (A) Schematic of the all-optical method using a photonic synapse to achieve the STDP plasticity. Split with an optical coupler (OC) (50:50), 50% of the presynaptic signal is connected to one input (Pin1) of an interferometer via a phase modulator (PM). Similarly, 50% of the postsynaptic signal is connected to the other input (Pin2) of the interferometer. The output signal (Pout) of the interferometer is used to update the synaptic weight. Npre and Npost are pre- and postsynaptic neurons, respectively. (B) Illustration of presynaptic (black) and postsynaptic (blue) signals with no time delay (Δt = 0) and the net output power of the interferometer as the switching signal (red). (C to F) The time delay between pre- and postsynaptic signals is increasing to arbitrarily chosen values Δt1, Δt2, Δt3, and Δt4, resulting in different numbers of pulses above the threshold switching power (Pth) being sent to the synapse. Zengguang Cheng et al. Sci Adv 2017;3:e Copyright © 2017 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution License 4.0 (CC BY).

Download ppt "Fig. 4 Proposed STDP scheme based on a photonic synapse."

Similar presentations

Similar presentations

Fig. 4 3D reconfiguration of liquid metals for electronics.

Fig. 4 3D reconfiguration of liquid metals for electronics.
Fig. 2 Transport properties of a BP transistor at low temperature.

Fig. 2 Transport properties of a BP transistor at low temperature.
Fig. 2 2D-IR spectroscopy on liquid ZnPa under dry conditions.

Fig. 2 2D-IR spectroscopy on liquid ZnPa under dry conditions.
Fig. 2 Changes in ice surface elevation, h, of Thwaites Glacier.

Fig. 2 Changes in ice surface elevation, h, of Thwaites Glacier.
Fig. 2 Global production, use, and fate of polymer resins, synthetic fibers, and additives (1950 to 2015; in million metric tons). Global production, use,

Fig. 2 Global production, use, and fate of polymer resins, synthetic fibers, and additives (1950 to 2015; in million metric tons). Global production, use,
Fig. 4 Power and wavelet spectra of benthic δ18O.

Fig. 4 Power and wavelet spectra of benthic δ18O.
Fig. 1 Pump-probe signatures of vermilion (red HgS), black HgS, and metallic Hg. Pump-probe signatures of vermilion (red HgS), black HgS, and metallic.

Fig. 1 Pump-probe signatures of vermilion (red HgS), black HgS, and metallic Hg. Pump-probe signatures of vermilion (red HgS), black HgS, and metallic.
Fig. 5 Thermal conductivity of n-type ZrCoBi-based half-Heuslers.

Fig. 5 Thermal conductivity of n-type ZrCoBi-based half-Heuslers.
Fig. 1 Map of water stress and shale plays.

Fig. 1 Map of water stress and shale plays.
Fig. 4 Morphogenesis in the Ch-CNC host droplets and NP assemblies.

Fig. 4 Morphogenesis in the Ch-CNC host droplets and NP assemblies.
Fig. 2 Some examples of weekly forecasts (the number of the forecasts are reported on Table 1). Some examples of weekly forecasts (the number of the forecasts.

Fig. 2 Some examples of weekly forecasts (the number of the forecasts are reported on Table 1). Some examples of weekly forecasts (the number of the forecasts.
Fig. 4 Resynthesized complex boronic acid derivatives based on different scaffolds on a millimole scale and corresponding yields. Resynthesized complex.

Fig. 4 Resynthesized complex boronic acid derivatives based on different scaffolds on a millimole scale and corresponding yields. Resynthesized complex.
Fig. 6 Comparison of properties of water models.

Fig. 6 Comparison of properties of water models.
Fig. 1 Mean and median RCR (Relative Citation Ratio) of Roadmap Epigenomics Program research articles for each year. Mean and median RCR (Relative Citation.

Fig. 1 Mean and median RCR (Relative Citation Ratio) of Roadmap Epigenomics Program research articles for each year. Mean and median RCR (Relative Citation.
Fig. 2 Reference-fixing experiment, results.

Fig. 2 Reference-fixing experiment, results.
Fig. 2 Ferroelectric domains resolved in WTe2 single crystals.

Fig. 2 Ferroelectric domains resolved in WTe2 single crystals.
Fig. 4 Latency of CsLoc during testing.

Fig. 4 Latency of CsLoc during testing.
Fig. 3 Rotation experiment, setup.

Fig. 3 Rotation experiment, setup.
Fig. 1 Product lifetime distributions for the eight industrial use sectors plotted as log-normal probability distribution functions (PDF). Product lifetime.

Fig. 1 Product lifetime distributions for the eight industrial use sectors plotted as log-normal probability distribution functions (PDF). Product lifetime.
Fig. 5 Structural photocycle for DmCry.

Fig. 5 Structural photocycle for DmCry.
Ads by Google