BESTFACT Best Practice Handbook 3

The Best Practice Handbook (BPH) gives an overview about current concepts, strategies and actions in freight transport all over Europe. It is disseminating information on successful projects and practices to increase awareness and share experiences. It is enabling knowledge transfer and supporting transferability for best practices. The third and last Best Practice Handbook focuses on the work done over the entire project, with 157 inventory cases and 60 in-depth analyses. After four years of case collection a wide field of solutions is available. The main findings of the BESTFACT cases are cross-checked and summarised for each of the cluster topics. The consistent form of collection and information provision broadens the structural understanding of best practice cases. The synthesis of cases per topic shows that under consideration of barriers and framework conditions replicable impacts are achievable. Main editors are Martin Ruesch & Simon Bohne (Rapptrans) and Jacques Leonardi (UoW). Project leader is Marcel Huschebeck (PTV)

Co-propagation of QKD & 6 Tb/s (60x100G) DWDM channels with ~17 dBm total WDM power in single and multi-span configurations

We report co-propagation experiments of the quantum channel (at 1310 nm) of a Quantum Key Distribution (QKD) system with Dense Wavelength Division Multiplexing (DWDM) data channels in the 1550 nm range. Two configurations are assessed. The first one is a single span configuration where various lengths of Standard Single Mode Fiber (SSMF) (from 20 to 70 km) are used and the total WDM channels power is varied. The Secure Key Rate (SKR) and the Quantum Bit Error Ratio (QBER) are recorded showing that up to ~17 dBm total power of 30 or 60 channels at 100 Gb/s can coexist with the quantum channel. A metric to evaluate the co-propagation efficiency is also proposed to better evaluate the ability of a QKD system to provide secure keys in a co-propagation regime. The second experiment is a three spans link with a cascade of three QKD systems and two trusted nodes in a 184 km total link length. We report the transmission of a coherent 400 Gb/s Dual Polarization DP-16QAM (Quadrature Amplitude Modulation) channel that transports a QKD secured 100 GbE data stream, with other fifty-four 100 Gb/s WDM channels. Encryption is demonstrated at the same time as co-propagation.Comment: arXiv admin note: text overlap with arXiv:2305.1374