Joint Propagation of Continuous Variable Quantum Key Distribution and $18 \times 24.5$ Gbaud PM-16QAM Channels

We study the impact of in-band ASE noise on the performance of CV-QKD over 10 km of fiber. We demonstrate co-propagation of CV-QKD and 3.5 Tbit/s classical coherent channels and show stable key generation over 48 hours.