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| 1 | Experimental study of neuromorphic node based on a multiwaveband emitting two-section quantum dot laser显示文摘In this work,we present experimental results concerning excitability in a multiband emitting quantum-dot-based photonic neuron.The experimental investigation revealed that the same two-section quantum dot laser can be tuned through a simple bias adjustment to operate either as a leaky integrate and fire or as a resonate and fire neuron.Furthermore,by exploiting the inherent multiband emission of quantum-dot devices revealed by the existence of multiple lasing thresholds,a significant enhancement in the neurocomputational capabilities,such as spiking duration and firing rate,is observed.Spike firing rate increased by an order of magnitude that leads to an enhancement in processing speed and,more importantly,neural spike duration was suppressed to the picosecond scale,which corresponds to a significant temporal resolution enhancement.These new regimes of operation,when combined with thermal insensitivity,silicon cointegration capability,and the fact that these multiband mechanisms are also present in miniaturized quantum-dot devices,render these neuromorphic nodes a proliferating platform for large-scale photonic spiking neural networks. | George Sarantoglou Menelaos Skontranis Adonis Bogris Charis Mesaritakis | 2021 | Photonics Research2021，9，4： | 2 |
| 2 | Modulation format identification in fiber communications using single dynamical node-based photonic reservoir computing显示文摘We present a simple approach based on photonic reservoir computing(P-RC)for modulation format identification(MFI)in optical fiber communications.Here an optically injected semiconductor laser with self-delay feedback is trained with the representative features from the asynchronous amplitude histograms of modulation signals.Numerical simulations are conducted for three widely used modulation formats(on–off keying,differential phase-shift keying,and quadrature amplitude modulation)for various transmission situations where the optical signal-to-noise ratio varies from 12 to 26 d B,the chromatic dispersion varies from-500 to 500 ps/nm,and the differential group delay varies from 0 to 20 ps.Under these situations,final simulation results demonstrate that this technique can efficiently identify all those modulation formats with an accuracy of>95%after optimizing the control parameters of the P-RC layer such as the injection strength,feedback strength,bias current,and frequency detuning.The proposed technique utilizes very simple devices and thus offers a resource-efficient alternative approach to MFI. | QIANG CAI YA GUO PU LI ADONIS BOGRIS KALAN SHORE YAMEI ZHANG YUNCAI WANG | 2021 | Photonics Research2021，9，1： | 2 |
| 3 | Spectral Synchronization in Chaotic Optical Communication Systems显示文摘 | Apostolos Argyris Dimitris Kanakidis Adonis Bogris and Dimltris Syvridis | 2005 | IEEE Journal of Quantum Electronics2005，41，6： | 1 |
| 4 | Real-time and ultrafast optical pulse quantization based on slicing the supercontinuum显示文摘All-optical analog-to-digital conversion is a paramount issue in modern science. How to implement real-time and ultrafast quantization to optical pulses with different intensities in an all-optical domain is a central problem. Here, we report a realtime demonstration of an all-optical quantization scheme based on slicing the supercontinuum in a nonlinear fiber. In comparison with previous schemes through off-line analysis of the power of different optical spectral components in the supercontinuum, this, to the best of our knowledge, is the first demonstration of such functionality online in the time domain.Moreover, the extinction ratio among the quantized outputs can exceed 10 d B, which further confirms the feasibility of the proposed quantization scheme. The current 3 bit resolution in the proof-of-principle experiment is limited by the current experimental condition, but it can be expected to be greatly enhanced through improving both the spectral width of the generated supercontinuum and the number of filtering channels used. | 郭亚 蔡强 贾志伟 徐兵杰 高震森 张倩武 张若南 Adonis Bogris K.Alan Shore 王云才 李璞 | 2021 | Chinese Optics Letters2021，19，8： | 0 |
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