Publications by authors named "Konstantinos Vyrsokinos"
Article Synopsis
- This paper presents optics-informed Neural Networks (NNs) designed to enhance the performance of End-to-End deep learning models for optical transmission links using Intensity Modulation with Direct Detection (IM/DD).
- The NNs utilize building blocks derived from the response of photonic devices and incorporate a new activation function called the Photonic Sigmoid, based on a semiconductor nonlinear optical module.
- Experimental results show that these optics-informed models outperform traditional ReLU-based configurations, achieving improved noise and chromatic dispersion compensation, with performance reaching below the Bit Error Rate (BER) limit for fiber lengths up to 42 km at 48 Gb/s.
We demonstrate a temperature and wavelength shift resilient silicon transmission and routing interconnect system suitable for multi-socket interconnects, utilizing a dual-strategy CLIPP feedback circuitry that safeguards the operating point of the constituent photonic building blocks along the entire on-chip transmission-multiplexing-routing chain. The control circuit leverages a novel control power-independent and calibration-free locking strategy that exploits the 2 derivative of ring resonator modulators (RMs) transfer function to lock them close to the point of minimum transmission penalty. The system performance was evaluated on an integrated Silicon Photonics 2-socket demonstrator, enforcing control over a chain of RM-MUX-AWGR resonant structures and stressed against thermal and wavelength shift perturbations.
View Article and Find Full Text PDFIn this paper, we present the design, fabrication and characterization of a carrier depletion silicon-photonic switch based on a highly doped vertical pn junction. The vertical nature of the pn junction enables the device to exhibit a modulation efficiency as high as 0.23 V.
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- The text discusses a shift from traditional data center architectures to disaggregated systems designed for better resource use and lower costs.
- It presents a new optical switch architecture that combines broadcast-and-select methods with optical buffering, achieving high performance at 10Gb/s with minimal power loss.
- Network simulations in a 256-node setup showed very low latency of 605 nanoseconds and an 80% throughput rate using optical buffers, highlighting the effectiveness of the proposed system.
With metal stripes being intrinsic components of plasmonic waveguides, plasmonics provides a "naturally" energy-efficient platform for merging broadband optical links with intelligent electronic processing, instigating a great promise for low-power and small-footprint active functional circuitry. The first active Dielectric-Loaded Surface Plasmon Polariton (DLSPP) thermo-optic (TO) switches with successful performance in single-channel 10 Gb/s data traffic environments have led the inroad towards bringing low-power active plasmonics in practical traffic applications. In this article, we introduce active plasmonics into Wavelength Division Multiplexed (WDM) switching applications, using the smallest TO DLSPP-based Mach-Zehnder interferometric switch reported so far and showing its successful performance in 4×10 Gb/s low-power and fast switching operation.
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