MCF-based quantum CDC-ROADM architecture with multi-granularity switching function

We propose a novel multi-core fiber (MCF)-based quantum CDC-ROADM (MCF-QROADM) with multigranularity switching function. MCF-QROADM uses MCFs as the fibers of the port to improve transmission capacity. Moreover, MCF-QROADM can pass through fewer devices to achieve the function of multi-granularity switching, which can reduce the loss of the quantum signal caused by the switch node architecture, and thus increase the transmission distance of quantum signals. In addition, MCF-QROADM can achieve the function of colorless, directionless and contentionless (CDC) through the design of reasonable add and drop modules. The simulation results show that MCF-QROADM has a better performance than the existing architectures.