Telecom Compatibility Validation of Quantum Key Distribution Co-existing with 112 Gbps/{lambda}/core Data Transmission in Non-Trench and Trench-Assistant Multicore Fibers

We experimentally characterize photon leakage from 112Gbps data channels in both non-trench and trench-assistant 7-core fibers, demonstrating telecom compatibility for QKD co-existing with high-speed data transmission when a proper core/wavelength allocation is carried out.