Concept
Free-space optical communication
Related publications (167)
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A new scintillator based fast -ion loss detector (FILD) system has been designed for the Wendelstein 7-X (W7X) stellarator. The mechanical design of the system is presented here along with engineering analyses of the system. This includes an assessment of ...
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Erbium-doped fibre lasers exhibit high coherence and low noise as required for fibre-optic sensing, gyroscopes, LiDAR and optical frequency metrology. Endowing erbium-based gain in photonic integrated circuits can provide a basis for miniaturizing low-nois ...
Nature Portfolio2024Disclination states in nonreciprocal topological networks
Romain Christophe Rémy Fleury, Haoye Qin, Zhechen Zhang, Qiaolu Chen
Recently, nonreciprocal two-dimensional unitary scattering networks have gained considerable interest due to the possibility of obtaining robust edge wave propagation in their anomalous topological insulating phase. However, zero-dimensional states in such ...
2024Editorial Foreword to The ECOC 2022 Special Issue
Niels Quack, Hans Georg Limberger, Rachel Grange, Christian Bosshard
The European Conference on Optical Communications (ECOC) is one of the leading conferences in the field of optical communications and its related topics. The 48th edition took place from 18th-22nd September 2022 in Basel, Switzerland. The conference attrac ...
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2023Domain Imaging and Switching Dynamics in BaTiO3-Based Photonic Integrated Devices
Keeping up with our constantly connected lifestyle of instant messages and video streaming has its repercussions. Data centers have been gobbling up resources becoming a significant share of the energy used worldwide. To keep up with demand and curb the en ...
EPFL2023Space-time wave packets with reduced divergence and tunable group velocity generated in free space after multi-mode fiber propagation
Tobias Kippenberg, Maxim Karpov, Hao Song, Xinzhou Su
Previously, space-time wave packets (STWPs) have been gen-erated in free space with reduced diffraction and a tunable group velocity by combining multiple frequency comb lines each carrying a single Bessel mode with a unique wave num-ber. It might be poten ...
Washington2023Privatized graph federated learning
Ali H. Sayed, Stefan Vlaski, Elsa Rizk
Federated learning is a semi-distributed algorithm, where a server communicates with multiple dispersed clients to learn a global model. The federated architecture is not robust and is sensitive to communication and computational overloads due to its one-m ...
SPRINGER2023Distributed Optimization with Byzantine Robustness Guarantees
As modern machine learning continues to achieve unprecedented benchmarks, the resource demands to train these advanced models grow drastically. This has led to a paradigm shift towards distributed training. However, the presence of adversariesâwhether ma ...
EPFL2023