Single parity check multi-core modulation for power efficient spatial super-channels

We investigate multi-core modulation formats for spatial super-channels using a single parity check on PDM-QPSK symbols. Compared to per-core PDM-QPSK, we show improvements in required OSNR of up to 1.8 dB, with minimal impact on spectral efficiency

Cost reduction and traffic performance improvement using direct forward optical layer multicast in optical label switching nodes

We propose a simpler, faster, more efficient and economical multicast concept for passive waveguidebased optical label switching nodes. We analyze its advantages in terms of cost and traffic performance in comparison with the recirculation approach

Cost reduction and traffic performance improvement using direct forward optical layer multicast in optical label switching nodes

We propose a simpler, faster, more efficient and economical multicast concept for passive waveguidebased optical label switching nodes. We analyze its advantages in terms of cost and traffic performance in comparison with the recirculation approach

Traffic performance evaluation of optical label switching nodes with optical layer multicast

All-optical label switching (AOLS) is a promising approach of implementing label switching for packet routing and forwarding in the optical layer at high speeds close to fiber line-rates. In this paper, AOLS node architectures with unicast and two multicast approaches are presented. The multicast approaches are referred to as feedback and feed-forward multicast, respectively. We compare these node architectures and evaluate their traffic performance in both unicast and multicast cases with different contention resolution schemes. Simulation results on AOLS nodes of the same dimension are analyzed in terms of packet loss ratio and network throughput