The feasibility of transmitting discrete-variable quantum key distribution channels with carrier-grade classical optical channels over multicore fibers is experimentally explored in terms of achievable quantum bit error rates, secret key rates as well as classical signal bit error rates. A coexistence transmission record of 11.2 Tb/s is achieved for the classical channels simultaneously with a DV-QKD channel over a 1 km-long 7-core multicore fiber. Coexistence over the same multicore fiber core is identified as a dominant factor for the performance of the quantum channel requiring optical bandpass filtering of 17nm for the quantum channel to avoid the effect of Raman noise. Also, counter-propagation of classical channels and quantum channels probe more tolerance to noise proliferation than co-propagation. In addition, the performance of the quantum channel is maintained when more than three cores are used for the classical channels. Furthermore, by adding a second DV-QKD channel in the multicore fiber, the simultaneous transmission of classical channels as well as the generation of quantum-secured keys of two QKD channels is achieved with an operational range of 10dB of launched power into the MCF.
We demonstrate a programmable disaggregated edge node in support of both metro and long-haul networks. This solution is successfully evaluated through Bristol's City Metro Network, over 100km and 200km optical fibre with a low power penalty.
P4-enabled Smart NIC is implemented and demonstrated. Interconnect with optical BVT, it offers agile 100Gbps interface to transport P4-defined data path for L2/L3 from VMs to sliceable optical transport. The Smart NIC can achieve 84.8Gbps throughput; its hardware-enabled SR can produce 30% more bandwidth.
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